IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0828039
(2007-07-25)
|
등록번호 |
US-8307956
(2012-11-13)
|
발명자
/ 주소 |
- Andersen, Jonathan
- Bublitz, Eric
- Cotton, Timothy
- Kish, John A.
- Lessard, Kurt
- Muhl, Timothy
- Nelson, Kyle E.
- Pietrangelo, Pamela
- Sander, Reinhard E.
- Sveum, Matt
- Wieberdink, Benjamin
|
출원인 / 주소 |
- Rite-Hite Holding Corporation
|
대리인 / 주소 |
Hanley, Flight & Zimmerman, LLC
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
76 |
초록
▼
A wheel restraint for restraining a vehicle at a loading dock includes various features such as, a wheel chock supported by a spring loaded articulated arm with a spring that can be selectively tightened or released, a sensor that detects whether the chock is solidly against a base plate or floor, a
A wheel restraint for restraining a vehicle at a loading dock includes various features such as, a wheel chock supported by a spring loaded articulated arm with a spring that can be selectively tightened or released, a sensor that detects whether the chock is solidly against a base plate or floor, a bi-directional pivotal joint between the articulated arm and the wheel chock to ensure that the chock can sit squarely on a mating base plate, a wheel chock that meshes with a hydraulically actuated base plate, pivotal or otherwise movable backstops that prevent a wheel chock from sliding out of position, and a base plate cleaning system. The cleaning system might include a vehicle-actuated brush, fluid spray nozzles, electric heater and removable cover plates.
대표청구항
▼
1. A wheel restraint system to engage a wheel of a vehicle at a loading dock, the wheel restraint system comprising: an anchor mountable to the loading dock;a wheel chock movable to a holding position and a release position such that in the holding position, the wheel chock is to obstruct the wheel,
1. A wheel restraint system to engage a wheel of a vehicle at a loading dock, the wheel restraint system comprising: an anchor mountable to the loading dock;a wheel chock movable to a holding position and a release position such that in the holding position, the wheel chock is to obstruct the wheel, and in the release position, the wheel chock is clear of the wheel;an arm to couple the wheel chock to the anchor;a spring coupled to the arm; anda spring release device to couple the spring to the arm, the spring release device, when activated, to move relative to the arm between a first position to stress the spring when the wheel chock is in the release position and, when deactivated, a second position to relax the spring when the wheel chock is in the holding position, the spring is to support more of the weight of the wheel chock when the spring release is in the first position to stress the spring than when the spring release is in the second position to relax the spring. 2. The wheel restraint system of claim 1, wherein the arm extends to an elevation that is higher than the wheel chock. 3. The wheel restraint system of claim 1, wherein the arm is articulated. 4. The wheel restraint system of claim 1, further comprising a base that is underneath and engaging the wheel chock when the wheel chock is in the holding position but is separated from the wheel chock when the wheel chock is in the release position. 5. A wheel restraint system of claim 1, further comprising a lower support surface the wheel chock is to rest upon and engage the lower support surface anda sensor carried by the wheel chock and being responsive to the position of the wheel chock relative to the lower support surface, the sensor to provide a signal to confirm that the wheel chock is resting upon and engaging the lower support surface. 6. The wheel restraint system of claim 5, wherein the lower support surface includes a base that meshes with the wheel chock. 7. The wheel restraint system of claim 6, further comprising a tooth protruding from at least one of the wheel chock and the base, wherein the tooth helps maintain engagement between the wheel chock and the base. 8. A wheel restraint system to engage a wheel of a vehicle at a loading dock that includes a dock face, the wheel restraint system comprising: an anchor mountable to the loading dock;a wheel chock movable to a holding position and a release position such that in the holding position, the wheel chock obstructs the wheel, and in the release position, the wheel chock is clear of the wheel;an arm coupled to the anchor via a first joint, the first joint to enable the arm to rotate relative to the anchor about a first axis and a second axis, the first axis being perpendicular to the second axis; anda second joint coupling the arm to the wheel chock such that the second joint enables: a) relative rotation between the wheel chock and the arm about a substantially horizontal axis that is substantially parallel to the dock face, andb) relative rotation between the wheel chock and the arm about a third axis that traverses a horizontal plane perpendicular to the dock face; anda spring release device coupled to the arm to assist with manual repositioning of the chock. 9. The wheel restraint system of claim 8, wherein the third axis is substantially vertical. 10. The wheel restraint system of claim 8, wherein the arm extends to an elevation that is higher than the wheel chock. 11. The wheel restraint system of claim 8, wherein the arm is articulated. 12. The wheel restraint system of claim 8, further comprising a base that is underneath and engaging the wheel chock when the wheel chock is in the holding position but is separated from the wheel chock when the wheel chock is in the release position.
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