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Patent Searching and Data


Title:
WHEELCHAIR HAVING A DOUBLE TURNBUCKLE HEIGHT ADJUSTMENT
Document Type and Number:
WIPO Patent Application WO2001082855
Kind Code:
A3
Abstract:
A wheelchair is provided which has a seat height adjustment comprised of a double in-line turnbuckle that allows infinite adjustment of the length of a turnbuckle assembly. The assembly includes a handgrip with a longitudinal recess having a first end with smaller internal threads that mate with the external threads of a smaller diameter cylinder. This cylinder can telescope with a recess formed in a second hollow cylinder having oppositely threaded external threads that mote with a second larger diameter set of threads in a second end of the longitudinal recess of the handgrip. The smaller diameter cylinder includes a snap button on a leif spring, which catches an annular shoulder on the recess formed at the transition between the smaller and the larger diameter areas. This inhibits the turnbuckle from over-extension. Further, the assembly has a restraint, which inhibits the turnbuckle assembly from working out of its selected position during use. The restraint can be pop detent or jam nut. The turnbuckle assembly is pivotally mounted at both ends in brackets, which are fastened respectively to a seat frame member and to a cross frame member.

Inventors:
MASCARI NICK
Application Number:
PCT/US2001/013982
Publication Date:
June 06, 2002
Filing Date:
May 01, 2001
Export Citation:
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Assignee:
INVACARE CORP (US)
International Classes:
A61G5/10; F16B7/06; (IPC1-7): A61G5/10; F16B7/06
Foreign References:
US5165137A1992-11-24
US3103384A1963-09-10
EP0302982A11989-02-15
DE4435023A11996-03-28
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