IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0133246
(2005-05-20)
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등록번호 |
US-7568598
(2009-08-24)
|
우선권정보 |
CA-2477584(2004-08-12) |
발명자
/ 주소 |
- Ophardt, Heiner
- Syed, Abdul Vali
- Jones, Andrew
- Kortleve Snider, Tony
|
출원인 / 주소 |
|
대리인 / 주소 |
Riches, McKenzie & Herbert LLP
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인용정보 |
피인용 횟수 :
19 인용 특허 :
21 |
초록
▼
A spring mechanism comprising an elongate cantilevered spring member extending along a longitudinal coupled at a first end to a first member and with a distal, second end of the spring member engaging a second member such that the spring member biases the first and second members relative to each ot
A spring mechanism comprising an elongate cantilevered spring member extending along a longitudinal coupled at a first end to a first member and with a distal, second end of the spring member engaging a second member such that the spring member biases the first and second members relative to each other. The spring member has an unbiased condition and being resiliently deflectable generally normal to its longitudinal to assume deflected conditions from which the spring member inherently attempts to return to its unbiased condition. The longitudinal of the spring member preferably remains disposed in a flat plane in deflecting of the spring member between the unbiased condition and the deflected conditions. The spring member preferably has, in cross-section normal to its longitudinal, a shape including two legs disposed to lie in planes parallel the flat plane and joined by a bight normal to the flat plane. Preferably, the spring member is provided with resiliency substantially by the resilient deflection of opposed portions of the two legs towards and/or away from each other normal to the flat plane. The spring member preferably consists of plastic material and may be formed as an integral element injection molded from plastic as a unitary element together with the first member to which it is coupled.
대표청구항
▼
We claim: 1. A dispenser for flowable materials comprising: a support member, an actuator member reciprocally movable relative to the support member between an extended position and a retracted position to dispense flowable material, a spring mechanism biasing the actuator member to one of the exte
We claim: 1. A dispenser for flowable materials comprising: a support member, an actuator member reciprocally movable relative to the support member between an extended position and a retracted position to dispense flowable material, a spring mechanism biasing the actuator member to one of the extended position and the retracted position, the spring mechanism comprising a first spring member and a second spring member, the second spring member being a separate, distinct element from the first spring element, the first spring member comprising an elongate cantilevered leaf spring member having a first end and a distal second end, the first end of the first spring member fixedly secured to the support member, the first spring member extending along a longitudinal of the first spring member from the first end of the first spring member toward the actuator member to the distal second end of the first spring member, the first spring member having an unbiased condition and being resiliently deflectable generally normal to its longitudinal to deflected conditions from which the first spring member inherently attempts to return to its unbiased condition, the second spring member comprising an elongate cantilevered leaf spring member having a first end and a distal second end, the first end of the second spring member fixedly secured to the actuator member, the second spring member extending along a longitudinal of the second spring member from the first end of the second spring member toward the support member to the distal second end of the second spring member, the second spring member having an unbiased condition and being resiliently deflectable generally normal to its longitudinal to deflected conditions from which the second spring member inherently attempts to return to its unbiased condition, the first spring member proximate the distal end thereof engaging the second spring member proximate the distal end thereof to interact as a combined double leaf spring. 2. A dispenser as claimed in claim 1 wherein in movement of the actuator member between the extended position and the retracted position the longitudinal of the first spring member and the longitudinal of the second spring member remain in a common plane. 3. A dispenser as claimed in claim 2 wherein the support member is pivotally coupled to the actuator member for pivoting about a hinge axis. 4. A dispenser as claimed in claim 3 wherein the common plane is normal to the hinge axis. 5. A dispenser as claimed in claim 4 wherein the spring mechanism comprises two identical spring sets, each spring set comprised of a pair of the first spring member and the second spring member, the common plane of one spring set is spaced from the common plane of the other spring set. 6. A dispenser as claimed in claim 1 wherein the first spring member together with the support member comprise a unitary element injection molded from plastic as a unitary element. 7. A dispenser as claimed in claim 1 wherein the second spring member together with the actuator member comprise a unitary element injection molded from plastic as a unitary element. 8. A dispenser as claimed in claim 6 wherein the second spring member together with the actuator member comprise a unitary element injection molded from plastic as a unitary element. 9. A dispenser as claimed in claim 8 wherein the support member is pivotally coupled to the actuator member for pivoting about a hinge axis and the common plane is normal to the hinge axis. 10. A dispenser as claimed in claim 2 wherein the support member, the actuator member, the first spring member and the second spring member together comprise a unitary element injection molded from plastic, the actuator member pivotally coupled to the support member by a living hinge for pivoting about a hinge axis, and the common plane is normal to the hinge axis. 11. A dispenser as claimed in claim 1 wherein, where the first spring member proximate the distal end thereof engages the second spring member proximate the distal end thereof, the longitudinal of the first spring member is substantially parallel to the longitudinal of the second spring member. 12. A dispenser as claimed in claim 1 wherein where the first spring member proximate the distal end thereof engages the second spring member proximate the distal end thereof, a portion of one of the first spring member and the second spring member nest in a portion of the other of the first spring member and the second spring member to limit or prevent relative movement of the first spring member and the second spring member other than between their respective unbiased conditions and deflected conditions. 13. A dispenser as claimed in claim 2 wherein, where the first spring member proximate the distal end thereof engages the second spring member proximate the distal end thereof, a portion of one of the first spring member and the second spring member nest in a portion of the other of the first spring member and the second spring member to limit or prevent relative movement of the first spring member and the second spring member normal to the common plane. 14. A dispenser as claimed in claim 2 wherein the first spring member has in cross-section normal to its longitudinal a shape including two legs disposed to lie in planes parallel the common plane and joined by a bight normal to the common plane. 15. A dispenser as claimed in claim 14 wherein the two legs of the first spring member decrease in dimension from the bight parallel the common plane with increasing distance along the longitudinal from the support member. 16. A dispenser as claimed in claim 2 wherein the second spring member has in cross-section normal to its longitudinal a shape including two legs disposed to lie in planes parallel the common plane and joined by a bight normal to the common plane. 17. A dispenser as claimed in claim 16 wherein the two legs of the second spring member decrease in dimension from the bight parallel the common plane with increasing distance along the longitudinal from the actuator member. 18. A dispenser as claimed in claim 16 wherein the second spring member has in cross-section normal to its longitudinal a shape including two legs disposed to lie in planes parallel the common plane and joined by a bight normal to the common plane. 19. A dispenser as claimed in claim 18 wherein the two legs of the second spring member decreasing in dimension from the bight parallel the common plane with increasing distance along the longitudinal from the actuator member. 20. A dispenser as claimed in claim 14 wherein the first spring member is provided with resiliency substantially by the resilient deflection of opposed portions of the two legs towards and/or away from each other normal to the flat plane. 21. A dispenser as claimed in claim 16 wherein the second spring member is provided with resiliency substantially by the resilient deflection of opposed portions of the two legs towards and/or away from each other normal to the fiat plane. 22. A dispenser as claimed in claim 18 wherein the first spring member is provided with resiliency substantially by the resilient deflection of opposed portions of its two legs towards and/or away from each other normal to the flat plane, and the second spring member is provided with resiliency substantially by the resilient deflection of opposed portions of its two legs towards and/or away from each other normal to the flat plane. 23. A dispenser as claimed in claim 18 wherein the two legs of the first spring member extend from the bight of the first spring member toward the second spring member, and, where the first spring member proximate the distal end thereof engages the second spring member proximate the distal end thereof, portions of the second spring member are received between the two legs of the first spring member. 24. A dispenser as claimed in claim 18 wherein the two legs of the second spring member extend from the bight of the second spring member toward the first spring member, and, where the first spring member proximate the distal end thereof engages the second spring member proximate the distal end thereof, portions of the first spring member are received between the two legs of the second spring member. 25. A dispenser as claimed in claim 18 wherein the two legs of the first spring member extend from the bight of the first spring member toward the second spring member, the two legs of the second spring member extend from the bight of the second spring member toward the first spring member, where the first spring member proximate the distal end thereof engages the second spring member proximate the distal end thereof, portions of one of the legs of second spring member are received between the two legs of the first spring member and portions of one of the legs of first spring member are received between the two legs of the second spring member. 26. A dispenser as claimed in claim 25 wherein the two legs of the first spring member decreasing in dimension parallel the common plane with increasing distance along the longitudinal from the support member, and the two legs of the second spring member decreasing in dimension parallel the common plane with increasing distance along the longitudinal from the actuator member. 27. A dispenser as claimed in claim 1 including a housing member, the actuator member pivotably coupled to the housing member for pivoting about a hinge axis, the support member secured to the housing member. 28. A dispenser as claimed in claim 24 wherein the housing member, the actuator member, and the second spring member together comprise a unitary element injection molded from plastic, the actuator member pivotally coupled to the support member by a living hinge for pivoting about the hinge axis. 29. A dispenser as claimed in claim 28 wherein the support member and the first spring member together comprise a unitary element injection molded from plastic. 30. A dispenser as claimed in claim 5 including a housing member, the housing member, the actuator member, and the second spring member together comprise a unitary element injection molded from plastic, the actuator member pivotally coupled to the support member by a living hinge for pivoting about a hinge axis, the support member secured to the housing member, the support member and the first spring member together comprise a unitary element injection molded from plastic.
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