IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
US-0925299
(2004-08-24)
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발명자
/ 주소 |
- Bellow, Jr., Stephen Lester
- Thomason, Rodger D.
- Conley, William Patrick
- Kurland, Lawrence G.
- Chen, George C.
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| 출원인 / 주소 |
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| 대리인 / 주소 |
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| 인용정보 |
피인용 횟수 :
29 인용 특허 :
51 |
초록
▼
A security device secures an apparatus having a wall (1110) with a slot (1120). The security device includes first and second shafts. The shafts have arms (10) rotatable about their respective axis into and out of their respective unlocked positions. Each of the axes of the arms are different from e
A security device secures an apparatus having a wall (1110) with a slot (1120). The security device includes first and second shafts. The shafts have arms (10) rotatable about their respective axis into and out of their respective unlocked positions. Each of the axes of the arms are different from each other. The shafts also have tangs (12) extending from the arms.
대표청구항
▼
1. A security device for securing an article having a wall with an opening formed therein, the security device comprising:a housing;a rotatable cam disposed within the housing and formed of a first part and a second complementary part, the first part having a first cam surface associated therewith a
1. A security device for securing an article having a wall with an opening formed therein, the security device comprising:a housing;a rotatable cam disposed within the housing and formed of a first part and a second complementary part, the first part having a first cam surface associated therewith and the second part having a second cam surface associated therewith; anda pair of locking elements received within the rotatable cam, each locking element being rotatable between a locked position and an unlocked position, each locking element having a tang extending therefrom, wherein in the locked position, the tangs extend in opposite directions, each locking element further having a cam arm that is disposed between the first and second surfaces of the first and second parts, respectively such that rotation of the cam in one direction imparts rotation to the locking elements due to contact between the locking elements and the second cam surface resulting in the locking elements being drawn into the housing and assuming the locked position.2. The security device of claim 1, wherein rotation of the cam in an opposite direction causes the locking elements to rotate to the unlocked position as they contact the first cam surface.3. The security device of claim 1, wherein in the unlocked position, the tangs are co-linear and point towards one another to permit insertion thereof into the opening formed in the wall.4. The security device of claim 1, wherein the first cam surface of the first part comprises a pair of spaced ramps formed on an underside of the first part in facing relationship to the locking elements, with an inclination of the ramps of the first cam surface being opposite an inclination of a pair of spaced ramps that define the second cam surface and are formed as part of the second part.5. The security device of claim 1, wherein the first cam surface overlies the second cam surface so as to form a travel channel for receiving the cam arm that extends outwardly from an elongated shaft of the locking element.6. The security device of claim 1, further including:a spacer disposed within the housing between the first and second parts of the cam and including a pair of through bores that receive ends of the locking elements, the spacer being stationary relative to the housing and serves to constrain and support motion of the locking elements.7. the security device of claim 6, wherein the spacer, in combination with the housing, limits axial rotation of each locking element to a maximum of about 90 degrees.8. The security device of claim 1, wherein the first part overlies the second part and serves as a draw-down mechanism for translating the locking elements along longitudinal axes thereof and causing the tangs to be driven away from the housing, while the second part functions as a draw-up mechanism for translating the locking elements along longitudinal axes thereof and causing the tangs to be driven toward the housing.9. The security device of claim 1, wherein the second part includes a slot formed adjacent the second cam surface and defined by a wall, the slot receiving a distal end of one respective cam arm of the locking element when it is in the unlocked position, whereby rotation in a first direction of the cam results in the wall urging the cam arm which imparts rotation to the locking element in the first direction and as soon as the second part is sufficiently rotated such that the wall passes by the cam arm, then the cam arm travels along a ramped section of the second cam surface until it reaches a stop that prevents further rotation of the locking element.10. The security device of claim 1, further including:a lock that has a first coupling feature that engages a complementary second coupling feature formed as part of the first part of the cam such that operation of the lock causes rotation of the cam which in turn is translated into rotation of the locking elements between the unlocked and locked positions.11. The security device of claim 10, wherein the first coupling feature comprises a projection and the second coupling feature comprises a slot formed in the first part of the cam.12. The security device of claim 1, wherein the first and second parts of the cam are coupled together such that they rotate together within the housing.13. The security device of claim 1, wherein engagement between the cam arms and the first cam surface causes the locking elements to be translated along their longitudinal axes in a direction away from the housing such that the tangs are advanced further away from the housing, while engagement between the cam arms and the second cam surface causes the locking elements to be translated along their longitudinal axes in an opposite direction toward the housing resulting in the tangs being drawn closer to the housing.14. The security device of claim 1, wherein one cam arm of the locking element extends outwardly from an elongated shaft of the locking element and is captured between first and second cam surfaces as the locking element moves between the unlocked position and the locked position, the first and second cam surfaces comprising oppositely inclined ramps.15. The security device of claim 14, wherein at one end of reach of the inclined ramps a vertical wall is formed and acts as a stop to limit the rotation of the locking element as a result of contact between the arm and the stop.16. The security device of claim 15, wherein the stops associated with the first part and the second part are formed at opposite ends of the respective inclined ramps such that when the first and second parts are coupled together such that they rotate together, the stop of the first part is off set from the stop of the second part.17. The security device of claim 15, wherein the cam arms are permitted to rotate less than 180 degrees before contacting the stop as they travel between the unlocked and locked position.18. A security device for securing an article having a wall with an opening formed therein, the security device comprising:a housing;a rotatable cam disposed within the housing and including a first cam surface and a second cam surface; anda pair of locking elements received within the rotatable cam, each locking element being rotatable between a locked position and an unlocked position, each locking element having a locking feature formed as part thereof that is received through the wall opening and engages the wall in the locked position, each locking element further having a cam arm that is disposed between the first and second cam surfaces as the locking element is urged by the cam between the unlocked and locked positions, wherein rotation of the cam in one direction imparts rotation to the locking elements due to one of the first and second cam surfaces contacting and urging the locking elements to one of the unlocked and locked positions, whereas rotation of the cam in an opposite direction causes the locking elements to be urged by the other of the first and second cam surfaces to the other of the unlocked and locked positions, wherein at least one of the first and second cam surfaces is an inclined surface and the respective locking element travels along a length thereof.19. The security device of claim 18, further including:a lock that has a first coupling feature that engages a complementary second coupling feature formed as part of the cam such that operation of the lock causes rotation of the cam which in turn is translated into rotation of the locking elements between the unlocked and locked positions due to an urging action of the one of the first and second cam surfaces against the cam arms of the locking elements.20. The security device of claim 18, wherein the first cam surface comprises a pair of spaced ramps that has an inclination that is opposite an inclination of a pair of spaced ramps that define the second cam surface.21. The security device of claim 20, wherein at one end of each of the inclined ramps a vertical wall is formed and acts as a stop to limit the rotation of the locking element as a result of contact between the cam arm and the stop.22. The security device of claim 18, further including:a spacer disposed within the housing and including a pair of through bores that receive ends of the locking elements, the spacer being stationary relative to the housing and serves to constrain and support motion of the locking elements.23. The security device of claim 22, wherein the spacer is disposed between the first and second cam surfaces and in combination with the housing, limits axial rotation of each locking element to a predetermined degree of rotation.24. A security device for securing an article having a wall with an opening formed therein, the security device comprising:a housing;a rotatable cam disposed within the housing and including a first cam surface and an opposing second cam surface, with the first cam surface overlying the second cam surface; anda pair of locking elements received within the rotatable cam, each locking element being rotatable between a locked position and an unlocked position, wherein rotation of the cam in a first direction results in the first cam surface contacting and urging the locking elements to an unlocked position, while rotation of the cam in an opposite second direction results in the second cam surface contacting and urging the locking elements to the locked position relative to the wall of the article, each locking element contacting both the first and second cam surfaces as the locking element moves between the unlocked and locked positions.25. The security device of claim 24, further including:a lock that has a first coupling feature that engages a complementary second coupling feature formed as part of the cam such that operation of the lock causes rotation of the cam which in turn is translated into rotation of the locking elements between the unlocked and locked positions due to an urging action of the one of the first and second cam surfaces against a cam arm of the locking elements.26. The security device of claim 24, wherein each locking element further has a cam arm that is disposed between the first and second cam surfaces as the locking element is urged by the cam between the unlocked and locked positions, wherein rotation of the cam in one direction imparts rotation to the locking elements due to one of the first and second cam surfaces contacting and urging the locking elements to one of the unlocked and locked positions, whereas rotation of the cam in an opposite direction causes the locking elements to be urged by the other of the first and second cam surfaces to the other of the unlocked and locked positions.27. The security device of claim 24, wherein the cam is formed of a first part and a separate second part that is coupled thereto such that the two joined parts rotate together, the first cam surface being formed as part of the first part, while the second cam surface is formed as part of the second part.28. The security device of claim 24, further including:a spacer disposed within the housing and including a pair of through bores that receive ends of the locking elements, the spacer being stationary relative to the housing and serves to constrain and support motion of the locking elements.29. The security device of claim 28, wherein the spacer is disposed between the first and second cam surfaces and in combination with the housing, limits axial rotation of each locking element to a predetermined degree of rotation.30. The security device of claim 24, wherein an interface between the locking elements and the first and second cam surfaces is constructed such that rotation of the cam imparts both rotational and translational movements of the locking elements which include elongated shafts, the rotational movement being a rotation about a longitudinal axis of the shaft, while translational movement is along the longitudinal axis of the shaft.
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