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:
Sep. 10, 1985
Filed:
Mar. 28, 1983
Paul Martin, Toronto, CA;
Diesel Equipment Limited, Toronto, CA;
Abstract
A safety locking mechanism for locking a hoist, such as a power operated tailgate, with repect to its supporting structure comprises: a pair of latch arms which are connected to one another by a flexible cable. A pair of power transmission chains connect the hoist to a power source. A pair of tension sensing lever arms are pivotally mounted and arranged to detect the presence or absence of a normal loading tension in the power transmission chains. The flexible cable also engages each of the tension sensing levers and is held by them in a position in which it retains the latch arms in a released position when a normal loading tension is detected in the power transmission chains. The latch arms will both move to a latching position locking the hoist when the absence of a normal loading tension is detected in the power transmission chains. The latch arms are made of a material which has a greater hardness than that of the slide members which support the platform so as to become embedded in the slide member when in the latching position.