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:
Mar. 27, 1990
Filed:
Apr. 24, 1989
Applicant:
Inventor:
John E Roberts, Los Altos, CA (US);
Assignee:
GTE Government Systems Corporation, Stamford, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B65H / ;
U.S. Cl.
CPC ...
242 / ; 242 / ; 242117 ; 52121 ; 254374 ;
Abstract
A winch having a torodially-shaped drum with an axis of rotation and at least one cable wound on the drum having a cable length extending from the drum parallel to and substantially equally spaced from said axis at all times during rotation of the winch. The drum has negatively-curved and positively-curved surfaces joined at a common edge, the cable being wound on the negatively-curved surface and directed therefrom over the positively-curved surface in a direction parallel to the drum axis. This drum is used advantageously with the mast system described in application Ser. No. 246,112.