[특허]Yieldable brace for a vehicle at a loading dock

Yieldable brace for a vehicle at a loading dock 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B65G-067/00
출원번호	US-0772445 (2007-07-02)
등록번호	US-8657551 (2014-02-25)
발명자 / 주소	Andersen, Jonathan Holm, Dave Muhl, Timothy Stone, Bradley J. Sveum, Matt
출원인 / 주소	Rite-Hite Holding Corporation
대리인 / 주소	Hanley, Flight & Zimmerman, LLC.
인용정보	피인용 횟수 : 0 인용 특허 : 66

초록 ▼

To help hold a trailer bed of a truck steady at a loading dock as the truck is being loaded or unloaded of its cargo, a yieldable vehicle brace exerts a substantial, but limited, reactive force upward against the trailer's rear impact guard to resist the trailer's downward movement. In some embodiments, the brace holds the trailer bed stationary up to a certain load limit and provides the trailer bed with a controlled or dampened descent when the load exceeds that limit. In some cases, the reactive upward force exerted by the brace increases with the downward velocity of the trailer bed. The reactive force can be created by one or more pressure relief valves, hydraulic fluid passing through a flow restriction, a brake, a spring, or various combinations thereof. Some embodiments of the brace include provisions for accommodating horizontal movement of the rear impact guard.

대표청구항 ▼

1. A vehicle brace for a vehicle that tends to move vertically in response to being loaded or unloaded at a loading dock, the vehicle brace comprising: a support member coupled to a base and being movable relative to the base;a first control system comprising a first resilient element to continuously urge the support member toward a preparatory position away from the base, the preparatory position being adjacent the vehicle so that the vehicle is able to exert an applied force against the support member that urges the support member downward from the preparatory position when the vehicle engages the support member and the first control system urges the support member away from the base when the vehicle disengages the support member; anda second control system comprising a second resilient element and an actuator coupled to the support member, the second resilient element operatively coupled to the actuator to enable the support member to exert against the vehicle a first reactive force that opposes the applied force in a first allowable range, and the actuator controlled to exert against the vehicle a second reactive force that opposes the applied force when the applied force exceeds the first allowable range such that the support member appreciably slows a descent of the vehicle when the vehicle moves downwardly, wherein the second control system operates independently from the first control system. 2. The vehicle brace of claim 1, wherein the second resilient element is between the base and the actuator. 3. The vehicle brace of claim 1, wherein the second resilient element is between the support member and the actuator. 4. The vehicle brace of claim 1, wherein the second resilient element is comprised of a resilient polymeric material. 5. The vehicle brace of claim 1, wherein the second resilient element is a leaf spring. 6. The vehicle brace of claim 1, wherein the actuator is a hydraulic cylinder. 7. The vehicle brace of claim 1, wherein the actuator is controlled by a flow restrictor in fluid communication with the actuator to provide a pressure differential to fluid flowing from the actuator that enables the support member to exert the second reactive force against the vehicle. 8. The vehicle brace of claim 1, wherein the first resilient element is to provide a linear force to the support member and the actuator is to provide a non-linear force to the support member. 9. The vehicle brace of claim 1, wherein a first end of the actuator is operatively coupled to a slot of the support member. 10. The vehicle brace of claim 1, wherein the base is maintained at a fixed distance relative to the loading dock.

이 특허에 인용된 특허 (66)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Yieldable brace for a vehicle at a loading dock 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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Yieldable brace for a vehicle at a loading dock 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허에 인용된 특허 (66)

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