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:
Apr. 05, 1994
Filed:
Mar. 26, 1992
Curtis J Simon, Pine Grove, CA (US);
Dale Kempf, Clovis, CA (US);
Hogan Mfg., Inc., Escalon, CA (US);
Abstract
A vehicle lift (10) for transporting a wheelchair passenger between a ground-level position adjacent the vehicle (12) to a position adjacent to and substantially coplanar with the vehicle floor (14) includes a contact sensor (16) for detecting when the lift platform contacts a curb or other object. A carriage assembly (20) includes a pair of slides (34) that ride on a pair of rails (36). As the platform is lowered, the relative position of the slides (34) and the rails (36) changes. The sensor (16) detects a relative position of one of the slides (34) and the corresponding rail (36). When the sensor (16) detects a relative position of the slide (34) and the rail (36) indicating that the platform has contacted a curb or other object, the sensor (16) generates a control signal. A lift controller (60) stops lowering of the platform in response to the control signal from the sensor (16).