[특허]Hand truck assemblies and methods of constructing and operating them

Hand truck assemblies and methods of constructing and operating them 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B62B-001/04
출원번호	US-0217294 (1994-03-23)
발명자 / 주소	Mortenson Carl N. (Midland MI)
출원인 / 주소	Magline, Inc. (Pinconning MI 02)
인용정보	피인용 횟수 : 22 인용 특허 : 0

초록 ▼

A hand truck has a pair of horizontally spaced, vertically extending side rails connected laterally to form a hand truck frame which has a handle incorporated with the upper portion thereof. Unique axle supporting brackets fixed to the inner sides of the lower end of each side rail extend rearwardly to an axle and wheel mechanism for supporting the frame which has a nose plate. A brake disc rim is secured to each wheel and a brake actuator is mounted on the frame near the hand truck handle to operate normally slacked flexible cables which are trained around the discs and guided by a bracket secured mechanism.

대표청구항 ▼

An improved hand truck comprising: a. a pair of horizontally spaced, vertically extending, side rails connected laterally to form a hand truck frame and having a handle surface incorporated with the upper portion thereof; b. said frame incorporating axle supporting brackets fixed to the lower end of the inner side of each side rail to extend rearwardly therefrom, said side rails comprising channels with channel openings facing respectively laterally inwardly toward one another and said brackets each having integral laterally projecting, vertically extending, elongate rail parts received within and in contact with said side rails; and fastener mechanism for securing said rail parts securely to said side rails; c. an axle and wheel mechanism on said brackets for supporting the frame, said axle and wheel mechanism including a pair of outboard laterally spaced wheels; d. a nose plate structure fixed at the lower end of said hand truck frame having a forwardly extending load support platform with a load engaging upper surface; e. a brake disc having a peripherally disposed braking surface secured to the interior side of each wheel to rotate therewith; f. brake actuator mechanism mounted on said frame; g. a slacked flexible cable actuator each having one end secured to said frame, trained in a generally closed loop around each said disc adjacent said braking surface, the opposite end of each actuator being connected to said brake actuator mechanism; h. said brake actuator mechanism including a movable brake operating mechanism which, when moved to an operating position from neutral position, tightens said cable actuators to tauten said cable actuators on said discs to brake said discs and wheels; i. guide mechanism on said frame spaced substantially from said return mechanism and in engagement with said cable actuators to maintain said cable actuators in substantially closed loops adjacent the brake surfaces but substantially out of engagement therewith when the cable actuators are returned to slacked position.

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Hailston, Bruce L., Structural member for a hand truck or cart.
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Burbank Daniel P. (P.O. Box 227 Ben Berry Rd. Moultonborough NH 03254), Wheelbarrow braking system.
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Daniel P. Burbank ; Randy Oliver, Wheelbarrow disk brake assembly.
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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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Hand truck assemblies and methods of constructing and operating them 원문보기

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Hand truck assemblies and methods of constructing and operating them 원문보기

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