Title:
MOTORIZED WHEELCHAIRS
Document Type and Number:
WIPO Patent Application WO2002066281
Kind Code:
A3
Abstract:
A motorized wheelchair is advantageously provided with a rate-of-turn feedback sensor and with forward/reverse motion, lateral motion, and vertical motion acceleration feedback sensors that are integrated into a closed-loop wheelchair servo control system to differentially control the rotational speed of wheelchair opposed motor-driven wheels and thereby obtain improved wheelchair motion stability through reduction/elimination of likely wheelchair spin-out and wheelchair tipping during wheelchair operation.
Inventors:
RICHEY JOSEPH B II
WAKEFIELD THEODORE D II
WAKEFIELD THEODORE D II
Application Number:
PCT/US2002/002639
Publication Date:
November 14, 2002
Filing Date:
January 30, 2002
Export Citation:
Assignee:
INVACARE CORP (US)
International Classes:
A61G5/04; B60L15/20; (IPC1-7): B60L15/20; B60L3/00; A61G5/04
Foreign References:
| US6202773B1 | 2001-03-20 | |||
| DE4231821A1 | 1994-03-31 | |||
| GB2342903A | 2000-04-26 | |||
| DE3724161C1 | 1988-12-01 | |||
| GB2352522A | 2001-01-31 |
Other References:
COOPER R A: "INTELLIGENT CONTROL OF POWER WHEELCHAIRS", IEEE ENGINEERING IN MEDICINE AND BIOLOGY MAGAZINE, IEEE INC. NEW YORK, US, vol. 14, no. 4, 1 July 1995 (1995-07-01), New York US, pages 423 - 430, XP000516552, ISSN: 0739-5175
Download PDF: