최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0250792 (2011-09-30) |
등록번호 | US-8864463 (2014-10-21) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 0 인용 특허 : 5 |
A rotating fan with a transmission mechanism and a blade deployment mechanism. In an energized state, an electromagnetic coil generates a magnetic force that causes a clutch plate to be in contact with a contact surface, thereby engaging a planetary gear system. In a de-energized state, the clutch p
A rotating fan with a transmission mechanism and a blade deployment mechanism. In an energized state, an electromagnetic coil generates a magnetic force that causes a clutch plate to be in contact with a contact surface, thereby engaging a planetary gear system. In a de-energized state, the clutch plate is not in contact with the contact surface, thereby disengaging the planetary gear system. In a deployed configuration, a drive link activated by the planetary gear system rotates a blade link to cause a fan blade to pivot. The result is that the fan blade tip is farther from the motor shaft than the fan blade root. In a retracted configuration, the drive link rotates the blade link to cause the fan blade to pivot and retract. The result is that the fan blade tip is equidistant from the motor shaft as the fan blade root.
1. An axial-flow, rotating ceiling fan comprising: (a) a stationary motor shaft having a top end for mounting to a horizontal surface and an opposite, bottom end suspended from the horizontal surface;(b) an electric fan motor rotating about the motor shaft and located at the top end of the motor sha
1. An axial-flow, rotating ceiling fan comprising: (a) a stationary motor shaft having a top end for mounting to a horizontal surface and an opposite, bottom end suspended from the horizontal surface;(b) an electric fan motor rotating about the motor shaft and located at the top end of the motor shaft;(c) a motor hub rigidly connected to a bottom surface of the fan motor and rotating about the motor shaft with the fan motor, the motor hub having internal splines comprising a series of grooves arranged radially about the motor shaft;(d) a transmission mechanism connected to the motor hub, the transmission mechanism comprising: (i) a sun gear, the sun gear surrounding the motor shaft and having a first geared portion and a second geared portion, the first geared portion of the sun gear having a series of gear teeth arranged radially about the motor shaft to engage the internal splines of the motor hub, the second gear portion also having a series of gear teeth arranged radially about the motor shaft;(ii) a ring gear housing surrounding the motor shaft, the ring gear housing having a first internal spline to engage the second geared portion of the sun gear;(iii) a clutch plate surrounding the motor shaft and connected to the ring gear housing by a plurality of clutch plate springs, each clutch plate spring comprising a helical compression spring, the clutch plate springs providing spring resistance to the clutch plate moving away from the ring gear housing;(iv) a coil housing surrounding and fixed to the motor shaft at the bottom end of the motor shaft, an upper end of the coil housing being adjacent and parallel to the clutch plate;(v) an electromagnetic coil surrounding the motor shaft within the coil housing, the electromagnetic coil being adjacent to the clutch plate;(vi) a sun gear spring, the sun gear spring comprising a helical compression spring surrounding the motor shaft between the sun gear and a bottom end of the coil housing, the sun gear spring providing a spring force to push the sun gear away from the bottom end of the coil housing;(vii) a pair of planet gears denoted here as a first planet gear and a second planet gear, the first planet gear rotatively connected to the ring gear housing about a first planet gear axle, the second planet gear rotatively connected to the ring gear housing about a second planet gear axle, the first planet gear and the second planet gear engaging the first geared portion of the sun gear on opposite sides of the sun gear, the first planet gear engaging a second internal spline of the ring gear housing, the second internal spline of the ring gear housing being radially farther from the motor shaft than the first geared portion of the sun gear, the second planet gear also engaging the second internal spline of the ring gear housing, the first planet gear rotating about the first planet gear axle and also revolving about the sun gear, the second planet gear rotating about the second planet gear axle and also revolving about the sun gear; and(viii) a planet gear carrier symmetrically surrounding the motor shaft and comprising a first arm rigidly connecting the two planet gear axles and a second arm rigidly connected and perpendicular to the first arm of the planet gear carrier, the second arm having a first end and an opposite second end;(e) a pair of fan blades arranged symmetrically about the motor shaft and denoted here as a first fan blade and a second fan blade, the first fan blade having a first fan blade tip and a first fan blade root, the second fan blade having a second fan blade tip and a second fan blade root;(f) a blade deployment mechanism comprising: (i) a main fan plate rigidly connected to the ring gear housing;(ii) a pair of drive links denoted here as a first drive link and a second drive link, each of the first drive link and the second drive link having a first, curved end and an opposite second end, the first end of the first drive link being connected to the first end of the second arm of the planet gear carrier, the first end of the second drive link being connected to the second end of the second arm of the planet gear carrier;(iii) a pair of idler arms denoted here as a first idler arm and a second idler arm, the first idler arm being connected to the first drive link, the second idler arm being connected to the second drive link, the first idler arm being between the first end and the second end of the first drive link, the first idler arm pivotally connecting the first drive link to the main fan plate, the second idler arm being between the first end and the second end of the second drive link, the second idler arm pivotally connecting the second drive link to the main fan plate;(iv) a pair of blade links denoted here as a first blade link and a second blade link, the first blade link being pivotally connected to the second end of the first drive link at an end of the first blade link, the second blade link being pivotally connected to the second end of the second drive link at an end of the second blade link; and(v) a pair of blade pivot assembly assemblies mounted to the main fan plate, denoted here as a first blade pivot assembly and a second blade pivot assembly, the first blade pivot assembly being connected to an opposite end of the first blade link, the second blade pivot assembly being connected to an opposite end of the second blade link, the first blade pivot assembly pivotally connecting the first fan blade to the main fan plate at the first fan blade root, the second blade pivot assembly pivotally connecting the second fan blade to the main fan plate at the second fan blade root;wherein the sun gear slides within the motor hub while engaging the internal splines of the motor hub;wherein the sun gear slides within the ring gear housing to engage and disengage the first internal spline of the ring gear housing;wherein in an energized state, the electromagnetic coil is energized and generates a magnetic force, the clutch plate is in contact with the upper end of the coil housing due to the magnetic force of the electromagnetic coil, and the sun gear is disengaged from the first internal spline of the ring gear housing due to the magnetic force of the electromagnetic coil;wherein in a de-energized state, the electromagnetic coil is de-energized and does not generate the magnetic force, the clutch plate is not in contact with the upper end of the coil housing due to the spring resistance of the clutch plate springs, and the sun gear is engaged with the first internal spline of the ring gear housing due to the spring force of the sun gear spring;wherein in a deployed state, the first end of the first drive link rotates about the motor shaft in a first rotative direction and activates the first blade link to rotate in the first rotative direction about the first blade pivot assembly, the first blade link causes the first fan blade to pivot about the first blade pivot assembly in the first rotative direction, the result being that the first fan blade tip is farther from the motor shaft than the first fan blade root, likewise the first end of the second drive link rotates about the motor shaft in the first rotative direction and activates the second blade link to rotate in the first rotative direction about the second blade pivot assembly, the second blade link causes the second fan blade to pivot about the second blade pivot assembly in the first rotative direction, the result being that the second fan blade tip is farther from the motor shaft than the second fan blade root; andwherein in a retracted state, the first end of the first drive link rotates about the motor shaft in a second rotative direction and activates the first blade link to rotate in the second rotative direction about the first blade pivot assembly, the first blade link causes the first fan blade to pivot about the first blade pivot assembly in the second rotative direction, the first fan blade sliding between the main fan plate and the clutch plate, the result being that the first fan blade tip is equidistant from the motor shaft as the first fan blade root, likewise the first end of the second drive link rotates about the motor shaft in the second rotative direction and activates the second blade link to rotate in the second rotative direction about the second blade pivot assembly, the second blade link causes the second fan blade to pivot about the second blade to pivot assembly in the second rotative direction, the second fan blade sliding between the main fan plate and the clutch plate, the result being that the second fan blade tip is equidistant from the motor shaft as the second fan blade root, each of the first fan blade and the second fan blade being shaped and dimensioned to together form a disk symmetrical about the motor shaft in the in retracted state. 2. An axial-flow, rotating fan comprising: (a) a stationary motor shaft;(b) an electric fan motor mounted to and rotating about the motor shaft;(c) a motor hub connected to the fan motor and rotating about the motor shaft with the fan motor, the motor hub having an engagement surface;(d) a transmission mechanism connected to the motor hub, the transmission mechanism comprising: (i) a sun gear, the sun gear having an engagement portion, a first geared portion, and a second geared portion, the engagement portion being shaped and to dimensioned to engage the engagement surface of the motor hub, the first geared portion of the sun gear having a series of gear teeth arranged radially about the motor shaft, the second gear portion also having a series of gear teeth arranged radially about the motor shaft;(ii) a ring gear housing, the ring gear housing having a first internal spline to engage the second geared portion of the sun gear;(iii) a clutch plate connected to the ring gear housing by a clutch plate spring, the clutch plate spring providing spring resistance to the clutch plate moving away from the ring gear housing;(iv) a contact surface fixed to the motor shaft and being adjacent to the clutch plate;(v) an electromagnetic coil;(vi) a sun gear spring; the sun gear spring providing a spring force to engage the engagement portion of the sun gear with the engagement surface of the motor hub;(vii) a first planet gear and a second planet gear, the first planet gear being rotatively connected to the ring gear housing about a first planet gear axle, the first planet gear engaging a second internal spline of the ring gear housing, the second internal spline of the ring gear housing being radially farther from the motor shaft than the first geared portion of the sun gear, the first planet gear rotating about the first planet gear axle and also revolving about the sun gear, the second planet gear rotatively connected to the ring gear housing about a second planet gear axle, the second planet gear also engaging the second internal spline of the ring gear housing, the second planet gear rotating about the second planet gear axle and also revolving about the sun gear; and(viii) a planet gear carrier connecting the first planet gear axle and the second planet gear axle;(e) a first fan blade, the first fan blade having a first fan blade tip and a first fan blade root;(f) a blade deployment mechanism comprising: (i) a main fan plate connected to the ring gear housing;(ii) a first drive link, the first drive link having a first, curved end and an opposite second end, the first end of the first drive link being connected to the planet gear carrier;(iii) a first blade link, the first blade link being pivotally connected to the second end of the first drive link at an end of the first blade link; and(iv) a first blade pivot assembly mounted to the main fan plate, the first blade pivot assembly being connected to an opposite end of the first blade link, the first blade pivot assembly pivotally connecting the first fan blade to the main fan plate at the first fan blade root;wherein the engagement portion of the sun gear slides within the motor hub while continuously engaging the engagement surface of the motor hub;wherein the second geared portion of the sun gear slides within the ring gear housing to engage and disengage the first internal spline of the ring gear housing;wherein in an energized state, the electromagnetic coil is energized and generates a magnetic force, the clutch plate is in contact with the contact surface due to the magnetic force of so the electromagnetic coil, and the sun gear is disengaged from the first internal spline of the ring gear housing due to the magnetic force of the electromagnetic coil; andwherein in a de-energized state, the electromagnetic coil is de-energized and does not generate the magnetic force, the clutch plate is not in contact with the contact surface due to the spring resistance of the clutch plate spring, and the sun gear is engaged with the first internal spline of the ring gear housing due to the spring force of the sun gear spring. 3. The fan of claim 2, the engagement surface of the motor hub comprising a series of internal splines. 4. The fan of claim 2, the clutch plate spring comprising a helical compression spring. 5. The fan of claim 2, the blade deployment mechanism further comprising a first idler arm, the first idler arm being connected to the first drive link, the first idler arm being between the first end and the second end of the first drive link, the first idler arm pivotally connecting the first drive link to the main fan plate. 6. The fan of claim 2, the contact surface being an annular surface of a coil housing, the coil housing being fixed to the motor shaft, the electromagnetic coil being within the coil housing. 7. The fan of claim 6, the sun gear spring comprising a helical compression spring between the sun gear and the coil housing. 8. The fan of claim 2, the planet gear carrier comprising: (a) a first arm rigidly connecting the first planet gear axle and the second planet gear axle, and(b) a second arm perpendicular to the first arm of the planet gear carrier, the second arm having a first end and an opposite second end,where the first end of the first drive link is connected to the first end of the second arm of the planet gear carrier. 9. The fan of claim 2 further comprising: (a) a second fan blade, the second fan blade having a second fan blade tip and a second fan blade root;(b) a second drive link, the second drive link having a first, curved end and an opposite second end, the first end of the second drive link being connected to the second end of the second arm of the planet gear carrier;(c) a second blade link, the second blade link being pivotally connected to the second end of the second drive link at an end of the second blade link; and(d) a second blade pivot assembly mounted to the main fan plate, the second blade pivot assembly being connected to an opposite end of the second blade link, the second blade pivot assembly pivotally connecting the second fan blade to the main fan plate at the second fan blade root. 10. The fan of claim 9 further comprising a second idler arm, the second idler arm being connected to the second drive link, the second idler arm being between the first end and the second end of the second drive link, the second idler arm pivotally connecting the second drive link to the main fan plate. 11. The fan of claim 9, wherein in a deployed configuration, the first end of the first drive link rotates about the motor shaft in a first rotative direction and activates the first blade link to rotate in the first rotative direction about the first blade pivot assembly, the first blade link causes the first fan blade to pivot about the first blade pivot assembly in the first rotative direction, the result being that the first fan blade tip is farther from the motor shaft than the first fan blade root, likewise the first end of the second drive link rotates about the motor shaft in the first rotative direction and activates the second blade link to rotate in the first rotative direction about the second blade pivot assembly, the second blade link causes the second fan blade to pivot about the second blade pivot assembly in the first rotative direction, the result being that the second fan blade tip is farther from the motor shaft than the second fan blade root; and wherein in a retracted configuration, the first end of the first drive link rotates about the motor shaft in a second rotative direction and activates the first blade link to rotate in the second rotative direction about the first blade pivot assembly, the first blade link causes the first fan blade to pivot about the first blade pivot assembly in the second rotative direction, the result being that the first fan blade tip is equidistant from the motor shaft as the first fan blade root, likewise the first end of the second drive link rotates about the motor shaft in the second rotative direction and activates the second blade link to rotate in the second rotative direction about the second blade pivot assembly, the second blade link causes the second fan blade to pivot about the second blade pivot assembly in the second rotative direction, the result being that the second fan blade tip is equidistant from the motor shaft as the second fan blade root. 12. The fan of claim 11, the first fan blade sliding between the main fan plate and the clutch plate in the retracted configuration and the second fan blade sliding between the main fan plate and the clutch plate. 13. The fan of claim 11, each of the first fan blade and the second fan blade being shaped and dimensioned to together form a disk symmetrical about the motor shaft in the retracted configuration. 14. A method for deploying and retracting fan blades of a ceiling fan, the method comprising the steps of: (a) providing a ceiling fan having: (i) a stationary motor shaft having a top end for mounting to a horizontal surface and an opposite, bottom end suspended from the horizontal surface;(ii) an electric fan motor rotating about the motor shaft and located at the top end of the motor shaft;(iii) a motor hub rigidly connected to a bottom surface of the fan motor and rotating about the motor shaft with the fan motor, the motor hub having internal splines comprising a series of grooves arranged radially about the motor shaft;(iv) a transmission mechanism connected to the motor hub, the transmission mechanism comprising: (A) a sun gear, the sun gear surrounding the motor shaft and having a first geared portion and a second geared portion, the first geared portion of the sun gear having a series of gear teeth arranged radially about the motor shaft to engage the internal splines of the motor hub, the second gear portion also having a series of gear teeth arranged radially about the motor shaft; (B) a ring gear housing surrounding the motor shall, the ring gear housing having a first internal spline to engage the second geared portion of the sun gear; (C) a clutch plate surrounding the motor shaft and connected to the ring gear housing by a plurality of clutch plate springs, each clutch plate spring comprising a helical compression spring, the clutch plate springs providing spring resistance to the clutch plate moving away from the ring gear housing; (D) a coil housing surrounding and fixed to the motor shaft at the bottom end of the motor shaft, an upper end of the coil housing being adjacent and parallel to the clutch plate; (E) an electromagnetic coil surrounding the motor shaft within the coil housing, the electromagnetic coil being adjacent to the clutch plate; (F) a sun gear spring, the sun gear spring comprising a helical compression spring surrounding the motor shaft between the sun gear and a bottom end of the coil housing, the sun gear spring providing a spring force to push the sun gear away from the bottom end of the coil housing; (G) a pair of planet gears denoted here as a first planet gear and a second planet gear, the first planet gear rotatively connected to the ring gear housing about a first planet gear axle, the second planet gear rotatively connected to the ring gear housing about a second planet gear axle, the first planet gear and the second planet gear engaging the first geared portion of the sun gear on opposite sides of the sun gear, the first planet gear engaging a second internal spline of the ring gear housing, the second internal spline of the ring gear housing being radially farther from the motor shaft than the first geared portion of the sun gear, the second planet gear also engaging the second internal spline of the ring gear housing, the first planet gear rotating about the first planet gear axle and also revolving about the sun gear, the second planet gear rotating about the second planet gear axle and also revolving about the sun gear; and (H) a planet gear carrier symmetrically surrounding the motor shaft and comprising a first arm connecting the two planet gear axles and a second arm rigidly connected and perpendicular to the first arm of the planet gear carrier, the second arm having a first end and an opposite second end;(v) a pair of fan blades arranged symmetrically about the motor shaft and denoted here as a first fan blade and a second fan blade, the first fan blade having a first fan blade tip and a first fan blade root, the second fan blade having a second fan blade tip and a second fan blade root;(vi) a blade deployment mechanism comprising: (A) a main fan plate rigidly connected to the ring gear housing; (B) a pair of drive links denoted here as a first drive link and a second drive link, each of the first drive link and the second drive link having a first; curved end and an opposite second end, the first end of the first drive link being connected to the first end of the second arm of the planet gear carrier, the first end of the second drive link being connected to the second end of the second arm of the planet gear carrier; (C) a pair of idler arms denoted here as a first idler arm and a second idler arm, the first idler arm being connected to the first drive link, the second idler arm being connected to the second drive link, the first idler arm being between the first end and the second end of the first drive link, the first idler arm pivotally connecting the first drive link to the main fan plate, the second idler area being between the first end and the second end of the second drive link, the second idler arm pivotally connecting the second drive link to the main fan plate; (D) a pair of blade links denoted here as a first blade link and a second blade link, the first blade link being pivotally connected to the second end of the first drive link at an end of the first blade link, the second blade link being pivotally connected to the second end of the second drive link at an end of the second blade link; and (E) a pair of blade pivot assembly assemblies mounted to the main fan plate, denoted here as a first blade pivot assembly and a second blade pivot assembly, the first blade pivot assembly being connected to an opposite end of the first blade link, the second blade pivot assembly being connected to an opposite end of the second blade link, the first blade pivot assembly pivotally connecting the first fan blade to the main fan plate at the first fan blade root, the second blade pivot assembly pivotally connecting the second fan blade to the main fan plate at the second fan blade root;(b) energizing the electromagnetic coil to produce a magnetic force;(c) the magnetic force pulling the clutch plate in contact with the contact surface, thereby locking the ring gear housing to the motor shaft via the coil housing;(d) the magnetic force also pulling the sun gear toward the electromagnetic coil and disengaging the sun gear from the first internal spline of the ring gear housing;(e) operating the electric fan motor in a first rotative direction;(f) the electric fan motor thereby turning the motor hub and the sun gear about the motor shaft in the first rotative direction, the sun gear engaging the first planet gear and the second planet gear causing the first planet gear and the second planet gear to revolve around the sun gear in a second rotative direction opposite to the first rotative direction, which causes the planet gear carrier to rotate about the motor shaft in the first rotative direction;(g) the rotating planet gear carrier thereby activating the first drive link and the second drive link, the first end of the first drive link rotating about the motor shaft in the first rotative direction and activating the first blade link to rotate in the first rotative direction about the first blade pivot assembly, thereby pivoting the first fan blade about the first blade pivot assembly in the first rotative direction and into a deployed configuration where the first fan blade tip is farther from the motor shaft than the first fan blade root, the first end of the second drive link rotating about the motor shaft in the first rotative direction and activating the second blade link to rotate in the first rotative direction about the second blade pivot assembly, thereby pivoting the second fan blade about the second blade pivot assembly in the first rotative direction and into the deployed configuration where the second fan blade tip is farther from the motor shaft than the second fan blade root;(h) de-energizing the electromagnetic coil;(i) the plurality of clutch plate springs pushing the clutch plate toward the ring gear housing and out of contact with the contact surface, thereby unlocking the ring gear housing from the motor shaft and the coil housing;(j) the sun gear spring pushing the sun gear away from the electromagnetic coil and toward the electric fan motor to engage the sun gear with the first internal spline of the ring gear housing;(k) operating the electric fan motor to revolve the first fan blade and the second fan blade about the motor shaft for a desired period of time;(l) stopping the electric fan motor;(m) energizing the electromagnetic coil to produce the magnetic force;(n) the magnetic force pulling the clutch plate in contact with the contact surface, thereby locking the ring gear housing to the motor shaft via the coil housing;(o) the magnetic force pulling the sun gear toward the electromagnetic coil and disengaging the sun gear from the first internal spline of the ring gear housing;(p) operating the electric fan motor in the second rotative direction;(q) the electric fan motor thereby turning the sun gear about the motor shaft in the second rotative direction, the sun gear engaging the first planet gear and the second planet gear, causing the first planet gear and the second planet gear to revolve around the sun gear in the first rotative direction, which causes the planet gear carrier to rotate about the motor shaft in the second rotative direction;(r) the rotating planet gear carrier thereby activating the first drive link and the second drive link, the first end of the first drive link rotating about the motor shaft in the second rotative direction and activating the first blade link to rotate in the second rotative direction about the first blade pivot assembly, thereby pivoting the first fan blade about the first blade pivot assembly in the second rotative direction and into a retracted configuration where the first fan blade tip is equidistant from the motor shaft as the first fan blade root, and the first end of the second drive link rotating about the motor shaft in the second rotative direction and activating the second blade link to rotate in the second rotative direction about the second blade pivot assembly, thereby pivoting the second fun blade about the second blade pivot assembly in the second rotative direction and into the retracted configuration where the second fan blade tip is equidistant from the motor shaft as the second fan blade root. 15. A method for deploying fan blades of a ceiling fan, the method comprising the steps of: (a) providing a ceiling fan having: (i) a stationary motor shaft;(ii) an electric fan motor mounted to and rotating about the motor shaft;(iii) a motor hub connected to the fan motor and rotating about the motor shaft with the fan motor, the motor hub having an engagement surface;(iv) a transmission mechanism connected to the motor hub, the transmission mechanism comprising: (1) a sun gear, the sun gear having an engagement portion, a first geared portion, and a second geared portion, the engagement portion being shaped and dimensioned to engage the engagement surface of the motor hub, the first geared portion of the sun gear having a series of gear teeth arranged radially about the motor shaft, the second gear portion also having a series of gear teeth arranged radially about the motor shaft; (2) a ring gear housing, the ring gear housing having a first internal spline to engage the second geared portion of the sun gear; (3) a clutch plate connected to the ring gear housing by a clutch plate spring, the clutch plate spring providing spring resistance to the clutch plate moving away from the ring gear housing; (4) a contact surface fixed to the motor shaft and being adjacent to the clutch plate; (5) an electromagnetic coil; (6) a sun gear spring, the sun gear spring providing a spring force to engage the engagement portion of the sun gear with the engagement surface of the motor hub; (7) a first planet gear and a second planet gear, the first planet gear being rotatively connected to the ring gear housing about a first planet gear axle, the first planet gear engaging a second internal spline of the ring gear housing, the second internal spline of the ring gear housing being radially farther from the motor shaft than the first geared portion of the sun gear, the first planet gear rotating about the first planet gear axle and also revolving about the sun gear, the second planet gear rotatively connected to the ring gear housing about a second planet gear axle, the second planet gear also engaging the second internal spline of the ring gear housing, the second planet gear rotating about the second planet gear axle and also revolving about the sun gear; and (8) a planet gear carrier connecting the first planet gear axle and the second planet gear axle;(v) a first fan blade, the first fan blade having a first fan blade tip and a first fan blade root;(vi) a blade deployment mechanism comprising: (1) a main fan plate connected to the ring gear housing; (2) a first drive link, the first drive link having a first, curved end and an opposite second end, the first end of the first drive link being connected to the planet gear carrier; (3) a first blade link, the first blade link being pivotally connected to the second end of the first drive link at an end of the first blade link; and (4) a first blade pivot assembly mounted to the main fan plate, the first blade pivot assembly being connected to an opposite end of the first blade link; the first blade pivot assembly pivotally connecting the first fan blade to the main fan plate at the first fan blade root;(b) energizing the electromagnetic coil to produce a magnetic force;(c) the magnetic force pulling the clutch plate in contact with the contact surface, thereby locking the ring gear housing to the motor shaft;(d) the magnetic force also pulling the sun gear toward the electromagnetic coil and disengaging the sun gear from the first internal spline of the ring gear housing;(e) operating the electric fan motor in a first rotative direction;(f) the electric fan motor thereby turning the motor hub and the sun gear about the motor shaft in the first rotative direction, the sun gear engaging the first planet gear and the second planet gear causing the first planet gear and the second planet gear to revolve around the sun gear in a second rotative direction opposite to the first rotative direction, which causes the planet gear carrier to rotate about the motor shaft in the first rotative direction;(g) the rotating planet gear carrier thereby activating the first drive link, the first end of the first drive link rotating about the motor shaft in the first rotative direction and activating the first blade link to rotate in the first rotative direction about the first blade pivot assembly, thereby pivoting the first an blade about the first blade pivot assembly in the first rotative direction and into a deployed configuration where the first fan blade tip is farther from the motor shaft than the first fan blade root. 16. The method of claim 15, further comprising the steps of: (a) de-energizing the electromagnetic coil;(b) the clutch plate spring pushing the clutch plate toward the ring gear housing and out of contact with the contact surface, thereby unlocking the ring gear housing from the motor shaft;(c) the sun gear spring pushing the sun gear away from the electromagnetic coil and toward the electric fan motor to engage the sun gear with the first internal spline of the ring gear housing; and(d) operating the electric fan motor to revolve the first fan blade about the motor shaft for a desired period of time. 17. The method of claim 16, further comprising the steps of retracting the fan blades by: (a) stopping the electric fan motor;(b) energizing the electromagnetic coil to produce the magnetic force;(c) the magnetic force pulling the clutch plate in contact with the contact surface, thereby locking the ring gear housing to the motor shaft;(d) the magnetic force pulling the sun gear toward the electromagnetic coil and disengaging the sun gear front the first internal spline of the ring gear housing;(e) operating the electric fan motor in the second rotative direction;(f) the electric fan motor thereby turning the sun gear about the motor shaft in the second rotative direction, the sun gear engaging the first planet gear and the second planet gear, causing the first planet gear and the second planet gear to revolve around the sun gear in the first rotative direction, which causes the planet gear carrier to rotate about the motor shaft in the second rotative direction; and(g) the rotating planet gear carrier thereby activating the first drive link, the first end of the first drive link rotating about the motor shaft in the second rotative direction and activating the first blade link to rotate in the second rotative direction about the first blade pivot assembly, thereby pivoting the first fan blade about the first blade pivot assembly in the second rotative direction and into a retracted configuration where the first fan blade tip is equidistant from the motor shaft as the first fan blade root. 18. A method for retracting fan blades of a ceiling fan, the method comprising the steps of: (a) providing a ceiling fan having: (i) a stationary motor shaft;(ii) an electric fan motor mounted to and rotating about the motor shaft;(iii) a motor hub connected to the fan motor and rotating about the motor shaft with the fan motor, the motor hub having an engagement surface;(iv) a transmission mechanism connected to the motor hub, the transmission mechanism comprising: (1) a sun gear, the sun gear having an engagement portion, a first geared portion, and a second geared portion, the engagement portion being shaped and dimensioned to engage the engagement surface of the motor hub, the first geared portion of the sun gear having a series of gear teeth arranged radially about the motor shaft, the second gear portion also having a series of gear teeth arranged radially about the motor shaft; (2) a ring gear housing, the ring gear housing having a first internal spline to engage the second geared portion of the sun gear; (3) a clutch plate connected to the ring gear housing by a clutch plate spring, the clutch plate spring providing spring resistance to the clutch plate moving away from the ring gear housing; (4) a contact surface fixed to the motor shaft and being adjacent to the clutch plate; (5) an electromagnetic coil; (6) a sun gear spring, the sun gear spring providing a spring force to engage the engagement portion of the sun gear with the engagement surface of the motor hub; (7) a first planet gear and a second planet gear, the first planet gear being rotatively connected to the ring gear housing about a first planet gear axle, the first planet gear engaging a second internal spline of the ring gear housing, the second internal spline of the ring gear housing being radially farther from the motor shaft than the first geared portion of the sun gear; the first planet gear rotating about the first planet gear axle and also revolving about the sun gear, the second planet gear rotatively connected to the ring gear housing about a second planet gear axle, the second planet gear also engaging the second internal spline of the ring gear housing, the second planet gear rotating about the second planet gear axle and also revolving about the sun gear; and (8) a planet gear carrier connecting the first planet gear axle and the second planet gear axle;(v) a first fan blade, the first fan blade having a first fan blade tip and a first fan blade root;(vi) a blade deployment mechanism comprising: (1) a main fan plate connected to the ring gear housing; (2) a first drive link, the first drive link having a first, curved end and an opposite second end, the first end of the first drive link being connected to the planet gear carrier; (3) a first blade link, the first blade link being pivotally connected to the second end of the first drive link at an end of the first blade link; and (4) a first blade pivot assembly mounted to the main fan plate, the first blade pivot assembly being connected to an opposite end of the first blade link, the first blade pivot assembly pivotally connecting the first fan blade to the main fan plate at the first fan blade root;(b) energizing the electromagnetic coil to produce the magnetic force;(c) the magnetic force pulling the clutch plate in contact with the contact surface, thereby locking the ring gear housing to the motor shaft;(d) the magnetic force pulling the sun gear toward the electromagnetic coil and disengaging the sun gear from the first internal spline of the ring gear housing;(e) operating the electric fan motor in a second rotative direction;(f) the electric fan motor thereby turning the sun gear about the motor shaft in the second rotative direction, the sun gear engaging the first planet gear and the second planet gear, causing the first planet gear and the second planet gear to revolve around the sun gear in the first rotative direction, which causes the planet gear carrier to rotate about the motor shaft in the second rotative direction; and(g) the rotating planet gear carrier thereby activating the first drive link, the first end of the first drive link rotating about the motor shaft in the second rotative direction and activating the first blade link to rotate in the second rotative direction about the first blade pivot assembly, thereby pivoting the first fan blade about the first blade pivot assembly in the second rotative direction and into a retracted configuration where the first fan blade tip is equidistant from the motor shaft as the first fan blade root. 19. The method of claim 18, the first fan blade sliding between the main fan plate and the clutch plate in the retracted configuration. 20. A rotating fan comprising: (a) a stationary motor shaft;(b) an electric fan motor mounted to and rotating about the motor shaft;(c) a speed reduction drive;(d) means for locking the speed reduction drive to the electric fan motor;(e) means for unlocking the speed reduction drive from the electric fan motor;(f) a selection mechanism operatively controlling the means for locking and the means for unlocking the speed reduction drive;(g) a fan blade, the fan blade having a fan blade tip and a fan blade root; and(h) a blade deployment mechanism;wherein in an de-energized state, the selection mechanism engages the means for locking the speed reduction drive to the electric fan motor, and the electric fan motor directly revolves the speed reduction drive and the fan blade about the motor shaft; andwherein in a energized state, the selection mechanism engages the means for unlocking the speed reduction drive from the electric fan motor, and the electric fan motor does not revolve the speed reduction drive or the fan blade about the motor shaft;wherein in a deployed configuration, the speed reduction drive engages the blade deployment mechanism to position the fan blade such that the fan blade tip is farther from the motor shaft than the fan blade root is from the motor shaft; andwherein in a retracted configuration, the speed reduction drive engages the blade deployment mechanism to position the fan blade such that the fan blade tip is equidistant from the motor shaft as the fan blade root is from the motor shaft.
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