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. 01, 1980
Filed:
Jul. 27, 1978
Ronald J Johnston, Georgetown, CA;
Aluma Systems Incorporated, Downsview, CA;
Abstract
A lifting device for use in association with concrete forming structures is provided. The lifting device has a pair of jaws, mounted on an axle, with a lifting lug associated with one of the jaws and a handle associated with the other of the jaws so that the other jaw may be hingedly moved relative to the first jaw. A spring loaded locking pin is provided to lock the second jaw in either an open or closed position, relative to the first position. The locking pin and the handle are each operable from above the lifting device. The inner ends of each of the hook-like jaws are rounded so as to specifically match the root configuration between the web and top flange of an upper chord of a truss, or other component of a concrete forming structure intended to be lifted using the lifting device of the present invention.