초록 ▼

An embodiment of a ceiling fan assembly has a motor rotatably mounted to a shaft and adapted to be mounted to an extent of a substantially planar support surface. A first set of fan blades are connected to the motor and a second set of fan blades are connected to the shaft a predetermined distance b

An embodiment of a ceiling fan assembly has a motor rotatably mounted to a shaft and adapted to be mounted to an extent of a substantially planar support surface. A first set of fan blades are connected to the motor and a second set of fan blades are connected to the shaft a predetermined distance below the extent of the substantially planar support surface, the motor, and the first set of fan blades. A method of circulating air comprises driving the motor to drive the first set of blades in a first rotational direction about the shaft. Simultaneously, responsive to the air flow generated by the rotation of the first set of blades in a first rotational direction, the second set of blades rotates in a second rotational direction about the shaft, opposite the first rotational direction.

대표청구항 ▼

1. A ceiling fan assembly, the assembly comprising: a motor positioned to rotate about an axis;a motor housing connected to and simultaneously rotatable with the motor about the axis;a first set of fan blades connected to and having at least portions thereof extending radially and outwardly through

1. A ceiling fan assembly, the assembly comprising: a motor positioned to rotate about an axis;a motor housing connected to and simultaneously rotatable with the motor about the axis;a first set of fan blades connected to and having at least portions thereof extending radially and outwardly through the motor housing and positioned to rotate in a first rotational direction relative to the axis when the motor operates;a blade housing positioned below the motor housing and rotatable about the axis; anda second set of fan blades connected to and having at least portions thereof extending radially and outwardly through the blade housing and positioned to rotate in a second rotational direction relative to the axis and opposite to the first rotational direction when the motor operates and simultaneous with the first set of fan blades rotating in the first rotational direction so that air currents generated during operation of the first set of blades when being driven by the motor and rotating in the first rotational direction responsively causes simultaneous rotation of the second set of blades in the second rotational direction. 2. A ceiling fan assembly as defined in claim 1, wherein the first set of blades extend radially outward from the axis a greater distance than the second set of blades. 3. A ceiling fan assembly as defined in claim 1, wherein: the axis is substantially perpendicular to a horizontal plane of an extent of a substantially planar support surface when the ceiling fan assembly is mounted to the extent of the substantially planar support surface. 4. A ceiling fan assembly as defined in claim 3, wherein each blade of the first set of blades has a blade body including an upper blade surface and a lower blade surface, the upper blade surface being positioned closer to the extent of the substantially planar support surface than the lower blade surface when the ceiling fan assembly is mounted thereto, the lower blade surface extending in a plane positioned at a preselected angle less than 90 degrees to the horizontal plane, and wherein each blade of the second set of blades has a blade body including an upper blade surface and a lower blade surface, the lower blade surface of each blade of the second set of blades being positioned at a preselected angle less than 90 degrees to the horizontal plane and substantially negative to the preselected angle of each blade of the first set of blades so that air current generated during operation of the first set of blades when being driven by the motor and rotating in the first rotational direction responsively causes simultaneous rotation of the second set of blades in the second rotational direction. 5. A ceiling fan assembly as defined in claim 4, wherein the lower surface of each blade of the first set of blades has blade indicia formed thereon so that the simultaneous rotation of the first and second sets of blades of the ceiling fan assembly when mounted to the extent of the substantially planar support surface and during operation enhancingly provides a substantially blooming flower appearance, the blade indicia having an outer perimeter so that the outer perimeter has a substantial appearance of a pedal of a flower, each of the blades of the first set of fan blades and each of the blades of the second set of fan blades having an outer perimeter shaped also to have a substantial appearance of a pedal of a flower. 6. A ceiling fan assembly, the assembly comprising: a shaft having an axis extending at least a substantial length thereof;a motor rotatably mounted to the shaft;a first set of fan blades connected to the motor and positioned to rotate in a first rotational direction relative to the axis when the motor operates; anda second set of fan blades rotatably connected to the shaft a predetermined distance from the motor along the shaft and positioned to rotate in a second rotational direction relative to the axis and opposite to the first rotational direction so that air currents generated during operation of the first set of blades when being driven by the motor and rotating in the first rotational direction responsively cause simultaneous rotation of the second set of blades in the second rotational direction. 7. A ceiling fan assembly as defined in claim 6, wherein: the axis of the shaft is substantially perpendicular to a horizontal plane of an extent of a substantially planar support surface when the motor and the shaft are mounted to the extent of the substantially planar support surface;the first set of fan blades are positioned at a lower elevation than the extent of the substantially planar support surface when the motor and shaft are mounted thereto; andthe second set of fan blades are positioned at a lower elevation than the first set of fan blades and the extent of the substantially planar support surface when the motor and the shaft are mounted to the extent of the substantially planar support surface. 8. A ceiling fan assembly as defined in claim 7, wherein each blade of the first set of blades has a blade body including an upper blade surface and a lower blade surface, the upper blade surface being positioned closer to the extent of the substantially planar support surface when the motor and shaft are mounted thereto than the lower blade surface, the upper blade surface extending in a plane positioned at a preselected angle less than 90 degrees to the horizontal plane, and wherein each blade of the second set of blades has a blade body including an upper blade surface and a lower blade surface, the upper blade surface of each blade of the second set of blades being positioned to underlie the lower blade surface of each blade of the first set of blades during operation, the lower blade surface of each blade of the second set of blades being positioned at a preselected angle less than 90 degrees to the horizontal plane and substantially negative to the preselected angle of each blade of the first set of blades. 9. A ceiling fan assembly as defined in claim 8, wherein the lower surface of each blade of the first set of blades has blade indicia formed thereon so that the simultaneous rotation of the first and second sets of blades of the ceiling fan assembly when mounted to the extent of the substantially planar support surface and during operation enhancingly provides a substantially blooming flower appearance, the blade indicia having an outer perimeter so that the outer perimeter has a substantial appearance of a pedal of a flower, each of the blades of the first set of fan blades and each of the blades of the second set of fan blades having an outer perimeter shaped also to have a substantial appearance of a pedal of a flower. 10. A ceiling fan assembly as defined in claim 6, wherein the first set of blades extend radially and outwardly from the axis a greater distance than the second set of blades. 11. A ceiling fan assembly as defined in claim 6, the assembly further comprising: a motor housing connected to and simultaneously rotatable with the motor, the first set of blades being connected to and having portions thereof extending radially and outwardly through the motor housing; anda blade housing rotatably connected to the shaft, the second set of blades being connected to and having portions thereof extending radially and outwardly through the blade housing. 12. A method of circulating air, the method comprising: (a) positioning a ceiling fan assembly having a first set of fan blades connected to a shaft and a second set of fan blades rotatably connected to the shaft a predetermined distance from the first set of fan blades along the shaft in a desired space; and(b) rotating the first set of fan blades in a first rotational direction relative to the shaft, thereby generating air currents that responsively cause simultaneous rotation of the second set of blades in a second rotational direction. 13. A method as defined in claim 12, wherein step (a) further comprises providing a motor rotatably mounted to the shaft and connected to the first set of blades; and wherein step (b) comprises operating the motor to rotate the first set of blades relative to the shaft in a first rotational direction. 14. A method as defined in claim 12, wherein the first set of blades extend radially and outwardly from the shaft a greater distance than the second set of blades. 15. A method as defined in claim 12, wherein a lower surface of each blade of the first set of blades has blade indicia formed thereon so that the simultaneous rotation of the first and second sets of blades of the ceiling fan assembly when mounted to a ceiling and during operation enhancingly provides a substantially blooming flower appearance. 16. A method of driving a ceiling fan assembly, the method comprising: (a) providing a ceiling fan assembly having a motor rotatably mounted to a shaft, the shaft having an axis extending at least a substantial length thereof, a first set of fan blades connected to the motor, and a second set of fan blades rotatably connected to the shaft a predetermined distance below the motor and the first set of fan blades along the shaft;(b) mounting the ceiling fan assembly to an extent of a substantially planar support surface such that the axis of the shaft is substantially perpendicular to a horizontal plane of the extent of the substantially planar support surface; and(c) operating the motor to rotate the first set of fan blades in a first rotational direction relative to the axis, thereby generating air currents that responsively cause simultaneous rotation of the second set of blades in a second rotational direction. 17. A method as defined in claim 16, wherein each blade of the first set of blades has a blade body including an upper blade surface and a lower blade surface, the upper blade surface being positioned closer to the extent of the substantially planar support surface than the lower blade surface when the ceiling fan assembly is mounted thereto, the lower blade surface extending in a plane positioned at a preselected angle less than 90 degrees to the horizontal plane, and wherein each blade of the second set of blades has a blade body including an upper blade surface and a lower blade surface, the lower blade surface of each blade of the second set of blades being positioned at a preselected angle less than 90 degees to the horizontal plane and substantially negative to the preselected angle of each blade of the first set of blades so that air current generated during operation of the first set of blades when being driven by the motor and rotating in the first rotational direction responsively causes simultaneous rotation of the second set of blades in the second rotational direction. 18. A method as defined in claim 16, wherein step (a) further comprises: providing a motor housing connected to and simultaneously rotatable with the motor, the first set of blades being connected to and having portions thereof extending radially and outwardly through the motor housing; andwherein step (c) further comprises operating the motor to rotate the motor housing in a first rotational direction relative to the axis. 19. A method as defined in claim 18, wherein step (a) further comprises: providing a blade housing rotatably connected to the shaft, the second set of blades being connected to and having portions thereof extending radially and outwardly through the blade housing; andwherein step (c) further comprises rotating the blade housing in a second rotational direction relative to the shaft and opposite to the first rotational direction responsive to air currents generated by rotation of the first set of blades in the first rotational direction when the motor operates. 20. A method as defined in claim 16, wherein the first set of blades extend radially and outwardly from the axis a greater distance than the second set of blades. 21. A method as defined in claim 20, wherein a lower surface of each blade of the first set of blades has blade indicia formed thereon so that the simultaneous rotation of the first and second sets of blades of the ceiling fan assembly when mounted to the extent of substantially planar support surface and during operation enhancingly provides a substantially blooming flower appearance.