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:
May. 05, 2020
Filed:
Dec. 20, 2018
Westinghouse Air Brake Technologies Corporation, Wilmerding, PA (US);
Timothy R. Schmidt, Wheeling, IL (US);
Lluno Cervera, Panorama City, CA (US);
Paul W. Debski, Orland Park, IL (US);
Karl J. Kobel, Wildwood, IL (US);
Benjamin R. Satkiewicz, Evanston, IL (US);
Westinghouse Air Brake Technologies Corporation, Wilmerding, PA (US);
Abstract
An outer roll stop for a wheelchair lift includes a base having a leading end, a trailing end, a top surface, and a bottom surface positioned opposite from the top surface, a top plate secured to the base, with the top plate moveable relative to the base, and an interlock assembly comprising a sensor positioned between the top plate and the base, with the sensor having a first state and a second state. The sensor moving from the first state to the second state when an object is positioned on the top plate. The sensor is configured to detect when an object is positioned on the top plate prior to motion of the outer roll stop.