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:
Feb. 21, 1995
Filed:
Jan. 06, 1993
Applicant:
Inventors:
Assignee:
New Flyer Industries Limited, Winnipeg, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65G / ;
U.S. Cl.
CPC ...
414537 ; 91464 ; 414921 ;
Abstract
A mechanism is provided for deploying a wheelchair ramp at the door of a vehicle, especially a bus, the ramp being of the kind which rotates between a stowed position at which it is flush with the vehicle floor and a deployed position in which it slopes downwardly and outwardly from the vehicle. The mechanism provides a 'float down' feature which permits the ramp to move downward under gravity without the need for operator control and prevents crushing of obstacles that get in the downward path of the ramp. The mechanism includes a transmission for translating a single hydraulic cylinder stroke into more than 180.degree. of rotation of the ramp.