The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 23, 1976
Filed:
Nov. 05, 1975
Alden C Simmons, Boulder, CO (US);
James T McFadden, Arvada, CO (US);
Robert S Bennett, Towson, MD (US);
Whittaker Corporation, Los Angeles, CA (US);
Abstract
A wheelchair mounted control system may be activated to enable propelling of the wheelchair at different predetermined speeds, to cause portions of the wheelchair to recline or be elevated, or to cause a signal to be generated to operate other apparatus such as a book page turner, a light switch or a television tuner, merely by positioning the neck or other skin-exposed body portion of a person in the wheelchair who is otherwise largely incapable of movement. Particular structure includes a periodic electric field source and a pair of field pickup elements adapted to be selectively contacted by the skin of a movable portion of the disabled person's body to cause, for example, activation of stepping switches and associated control relays whereby wheelchair drive motor speed is preselected and recline/elevation motor apparatus is activated for effecting the desired control of various adjustable portions of the wheelchair.