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. 03, 1976
Filed:
Apr. 08, 1974
Applicant:
Inventor:
Edward Larralde, Santa Barbara, CA (US);
Assignee:
Vetco Offshore Industries, Inc., Ventura, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B66D / ;
U.S. Cl.
CPC ...
254188 ; 2541 / ;
Abstract
The traveling block of the derrick mounted on a floating barge is connected in off-center relation with a load supporting motion compensator cylinder, the sheaves being located and strung asymmetrically with respect to the center line of the motion compensator cylinder. The crown block sheaves are rotatable on axes which are skewed to reduce fleet angle of the line. Different size sheaves are strung differently and different numbers of line runs are strung differently to equalize the forces about the center of gravity of the mass of the traveling block.