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, 1978
Filed:
Mar. 05, 1976
Applicant:
Inventor:
Louis F Ray, Baton Rouge, LA (US);
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B63B / ; B66C / ;
U.S. Cl.
CPC ...
214 13 ; 212 / ; 212 48 ; 212 56 ; 212 63 ;
Abstract
A crane assembly mounted on a buoyant barge has a vertical column with a cross boom, the boom including outer extremities. A trolley is movably mounted on the boom, and has lift means for engagement with articles to be loaded and unloaded. A buoyant counterweight is attached to one of the extremities of the boom by a cable of fixed length, and the other extremity of the boom is secured to the loading and unloading site. The counterweight resists tilt moments on the boom responsive to movement of the weight of the lifted article along the boom, and overturn is prevented in other positions of the article weight by the attachment of the boom to the site.