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:
Jan. 10, 1978
Filed:
Feb. 24, 1976
Louis F Ray, Baton Rouge, LA (US);
Other;
Abstract
A crane for lifting of objects has a base and a substantially vertical column assembly extending from the base. A cross truss is mounted on the column, and cables are pivotally secured to the truss and fixed to the top of the column. Movably mounted on one side of the column on the truss is a lift assembly which includes a hoist cable and winding means, and a movable counterweight assembly is operatively disposed on the truss on the opposite side of the column. Tilt sensors on the column result in movement of the counterweight assembly to compensate for weight applied at the hoist cable, and thus balance the truss. The crane is either land mounted, or attached to a buoyant vessel. The truss has a track and rollers for hanger arms of the counterweight and lift assembly.