[특허]Self-propelling and steering attachment for a wheel-chair

[미국특허] Self-propelling and steering attachment for a wheel-chair 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B62M-001/14
출원번호	US-0124528 (1980-02-25)
발명자 / 주소	Boivin Bernard (1689 Sanguinet St. Montreal CAX H2X 3G5)
인용정보	피인용 횟수 : 28 인용 특허 : 2

초록 ▼

A self-propelling and steering attachment for a wheel-chair which can be installed and removed by the user while remaining seated in the wheel-chair and which comprises a sleeve, a steering post rotatably supported by the sleeve, a ground-engaging steering and propelling wheel carried by the lower end of the steering post, a crank mechanism carried by the top end of the steering post, a power transmission connecting the crank and the steering and propelling wheel, a framework which is quickly connectable to, and disconnectable from, the front frame portion of the wheel-chair, and a pair of superposed longitudinally-extending bars interconnecting the framework and the sleeve. The upper bar is rigid with the sleeve at one end and pivots relative to the framework at the other end. The lower bar is pivotally connected to the sleeve and to the framework and is extensible and retractable, being provided with a locking pin to lock this bar to a retracted, adjusted length. For installation of the attachment, the user first rigidly connects the framework to the wheel-chair front frame portion, while the locking pin is removed, then he pushes forwardly on the crank mechanism or on the upper portion of the steering post to cause the latter to attain a more upright position, therefore causing the front swivel wheels of the wheel-chair to raise off the ground. With this movement, the lower bar has retracted and the user then inserts the locking pin to lock the lower bar in retracted position.

대표청구항 ▼

A self-propelling and steering attachment for a wheel-chair of the type having a frame, rear larger diameter wheels supporting said frame and front smaller diameter swivel wheels supporting said frame at the front frame portion thereof, said attachment comprising a front sleeve, a steering post rotatably supported in said sleeve, a ground-engaging steering and propelling wheel carried by the bottom of said steering post, drive means for said steering and propelling wheel, a rear framework, means on said framework to rigidly connect and disconnect the same to and from the front frame portion of said wheel-chair, and two superposed bars extending longitudinally forwardly from said rear framework and interconnecting the latter and said sleeve, one of said bars being extensible and retractable and pivotally connected to said rear framework and to said sleeve for pivotal movement about horizontal transverse axes relative to said wheel-chair, and the other of said bars being rigidly secured to one of said framework and of said sleeve and pivotally connected to the other of said framework and of said sleeve for pivotal movement about a horizontal transverse axis relative to said wheel-chair, and means to lock said extensible and retractable bar to an adjusted length, whereby a wheel-chair user, while seated in the wheel-chair, can secure said framework to said wheel-chair front frame portion when said locking means are in released position and while said front swivel wheels of the wheel-chair rest on a support surface, and then the user can lift said swivel wheels off the ground by pushing forwardly of said steering post to cause the same to take more vertical attitude, thereby causing a change of length of said extensible and retractable bar and then locking the latter in its final position with the swivel wheels remaining raised off the supporting surface and the wheel-chair resting on said supporting surface only by the rear large diameter wheels and the steering and propelling wheel.

이 특허에 인용된 특허 (2) 인용/피인용 타임라인 분석

Silva ; Jr. ; John C., Amplified cycle steering system.
상세보기
Harper ; Randall L., Hand powered and controlled tricycle.
상세보기

이 특허를 인용한 특허 (28) 인용/피인용 타임라인 분석

Dougherty, Patrick S., All terrain adapter for a wheelchair.
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Dougherty, Patrick S.; Dougherty, Michael E., All terrain adapter for folding wheelchair.
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Noyola Rufino, Auxiliary frame with propulsion and steering means for attachment to wheelchair.
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Bach Castillo, Pablo Alejandro, Auxiliary mobility system for a wheelchair.
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Phillips Cal M. (North Miami Beach FL), Double-drive bicycle.
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Bowser, John, Exercise cycle assembly.
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Bowser, John; Lunau, Kevin R.; Skahan, Michael S., Exercise system using exercise resistance cables.
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Bowser, John; Lunau, Kevin R.; Skahan, Michael S., Exercise system using exercise resistance cables.
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Moore Jonie M. T. (1455 W. 120th St. Los Angeles CA 90047), Exercising device for use with a wheelchair.
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Barrett, John M.; Scholz, N. Hanz, Folding unicycle attachment for a wheelchair.
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Schuettenberg, Donald W., Front tow extended saddle.
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Johnston Fred E. (R.F.D. Box 83 Cleghorn IA 51014), Hand powered tricycle having a wheelchair hitch.
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Hallett Robert L., Hand-driven bicycle/wheelchair combination.
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Robert Joss Adams, Handcranked rear-wheel axle-driven sport wheelchair.
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Berkheimer John C. (1779 Walden Pond Dr. Ft. Pierce FL 34945), Leg mobilized attachments for wheelchairs.
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Ju, Shun-Yuan; Lee, Gang-Hua; Hu, Zheng-Yang, Manual tractor assembly for tracking wheel chair.
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Golden, Jr., Stephen C., Mechanism and apparatus for wheelchair reconfiguration.
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Kylstra, Bart; Jauvtis, Nathan Isaiah; Cook, Thomas Martin; Kerrel, Sean, Mounting assembly for attaching auxiliary equipment to a wheelchair.
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Young Raymond L. (5729 Shadow Creek Dr. Sacramento CA 95841), Propulsion and safety device for a conventional wheelchair.
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Bowser, John, Seated row exercise system.
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Bowser, John, Seated row exercise system.
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Harris Godfrey (Littleton CO) Noell Ralph B. (Ajo AZ) Bradshaw Larry R. (Arvada CO), Self-propelled, steerable wheelchair.
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Bowser, John, Shoulder stretcher assembly.
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Zirrilo James A. (6206 Newberry Rd. Indianapolis IN 46256), Wheel chair auxiliary drive means.
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Taylor William Gregory, Wheelchair.
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Boyce James A. (343 S. Harris Saline MI 48167), Wheelchair attachment.
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Horn Douglas J. (12813 Saint Andrew Dr. Kansas City MO 64145), Wheelchair propelled by rowing.
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Golden, Jr., Stephen C., Wheelchair reconfiguration methods.
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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

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[미국특허] Self-propelling and steering attachment for a wheel-chair 원문보기