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:
Nov. 23, 1976
Filed:
Apr. 09, 1976
Aubrey E Greene, Ellaville, GA (US);
James D Anderson, Gainsville, GA (US);
Other;
Abstract
A low profile air jack for lifting vehicles is described, in which the force exerted by a horizontally disposed air cylinder and piston assembly on the lever arm of a lifting member pivoted to the jack frame causes the lifting member to rotate, so that its front end engages and lifts the vehicle. The piston shaft of the air cylinder is connected to the lever arm of the lifting member by a flexible chain and sprocket assembly which acts as a force-multiplying mechanism so that the force acting on the lever arm of the lifting member is approximately double the force which would be exerted if the piston shaft were directly connected to the lever arm by a rigid member. The two flexible chains are connected to a stabilizing bar, which is pivotably attached to the jack frame for both vertical and horizontal movement thereto, rather than directly to the frame, so that equal forces are applied to both chains during the lifting operation.