Seat assembly for wheelchair

a seat and wheelchair technology, applied in the field of personal mobility vehicles, can solve the problems of not being able to accommodate users with apple or pear, seat and backrests that are not independently adjustable, and most of the support is limited to adjustmen

Inactive Publication Date: 2006-05-04
SUNRISE MEDICAL HHC INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014] Lastly, the present invention is further directed towards a roller clutch bearing (i.e., a one-way bearing) that is sleek and attractive. The roll...

Problems solved by technology

Such seat assemblies are not well suited for users having apple or pear shaped anatomies (i.e., a normal trunk and wide hips, usually due to redundant tissue).
Conventional seat assemblies with a seat and a backrest that are not independently adjustable cannot accommodate such users.
However, most of these supports are limited to adjustment in a vertical plane or direction.
That is to say, these supports do not accommodate changes in width over the ver...

Method used

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  • Seat assembly for wheelchair
  • Seat assembly for wheelchair
  • Seat assembly for wheelchair

Examples

Experimental program
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Embodiment Construction

[0048] Referring now to the drawings, there are illustrated in FIGS. 1-4 seat assemblies for wheelchairs. The seat assemblies 110 are in the form of modular seating platforms that can be mounted on various power wheelchair bases (not shown). The seat assemblies 110 may comprise a seat 112 that may be adjustable in width and a backrest 114 that may be adjustable in width independently of the width adjustment of the seat 112. In addition, the seat 112 may be adjustable in depth and the backrest 114 may be adjustable in height. As a consequence of these adjustments, the seat assemblies 110 can preferably accommodate a very wide range of users, including a fifth percentile female user (i.e., small user) and up to a ninety-fifth percentile male user (i.e., about 400 pound user). The seat assemblies 110 may further comprise a center frame 116 that is preferably continuous and that preferably has an architecture that supports both the seat 112 and the backrest 114. Consequently, the seat a...

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Abstract

A seat assembly can be mounted on various wheelchair bases. The seat assembly enables the seat width and backrest width to be adjusted independently of each other. A backrest has a plurality of open slots, the number and orientation of which contributes to depth, width, and height adjustment of the backrest as well as angular adjustment of lateral supports to permit the backrest to conform to the anatomical curves of a user. A backrest foam assembly comprises multiple foam sections that are adapted to be positioned relative to each other and thereby vary the overall width of the assembly. A cover comprises multiple sections, each covering a foam section. A multi-position adjustable armrest assembly combines large-scale and small-scale adjustments, which provides a broad range of adjustment for the armrest and its position. A power recline mechanism with programmable shear reduction includes a dual rotary recline mechanism.

Description

CROSS REFERENCE TO RELATED APPLICATIONS [0001] This application claims the benefit of U.S. Provisional Patent Application No. 60 / 621,409, filed on Oct. 22, 2004.BACKGROUND OF INVENTION [0002] This invention relates in general to personal mobility vehicles and more particularly, to accessories for personal mobility vehicles. Most particularly, this invention relates to seating systems for wheelchairs and like vehicles. [0003] Conventional seat assemblies for wheelchairs have a seat and a backrest that are not independently adjustable. Such seat assemblies are not well suited for users having apple or pear shaped anatomies (i.e., a normal trunk and wide hips, usually due to redundant tissue). Such users would be better accommodated with a wide seat and narrow backrest. Conventional seat assemblies with a seat and a backrest that are not independently adjustable cannot accommodate such users. [0004] Conventional seat assemblies also have lateral thoracic supports. However, most of thes...

Claims

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Application Information

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IPC IPC(8): A47C13/00
CPCA61G5/1067A61G5/12A61G2005/1091A61G2005/121A61G2005/125A61G2005/128A61G2203/74A61G5/1091A61G5/121A61G5/125A61G5/128
Inventor CHRISTOFFERSON, JAMES L.WHELAN, THOMAS J.STEVENS, REX W.FRERICH, VINCENT J.LE, DAVIDTRAN, SYTSUBER, VASILY
Owner SUNRISE MEDICAL HHC INC
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