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:
Jan. 04, 1983
Filed:
Dec. 11, 1980
Francis A Farey, Menlo Park, CA (US);
Richard A Fayram, Palo Alto, CA (US);
Other;
Abstract
A wheelchair hand rim that provides improved control and mobility has a cross-sectional contour that is configured to optimize the gripping surface and finger wrap over widely differing angles. The contour (taken at top dead center) is characterized by a lower curved portion of sufficient radius to provide a firm finger grip, a generally vertical inboard portion, an outboard gently curved portion that slopes inboard from bottom to top, and an upper curved portion that includes an outboard segment of a first radius sufficient to provide a firm upper palm grip and an inboard portion of a second, smaller radius that is still sufficient to provide a smooth rest for the thumb of the user. A hand rim suitable for users having extremely limited grip strength has a peripheral configuration that is not circular, but rather undulating.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile