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:
May. 22, 1979
Filed:
Jun. 03, 1977
William Alexander, Potters Bar, GB;
John T Webb, Sunningdale, GB;
Wharton Engineers (Elstree) Limited, Hertfordshire, GB;
Abstract
A multi-capstan winch has a pair of haulage capstans and at least one delivery capstan associated therewith. In delivering cable to the haulage capstans, the delivery capstan considerably reduces the loading on the cable, thereby allowing haulage capstans of a reduced diameter and weight. The delivery capstan is preferably coaxial with one of the haulage capstans, is a single groove capstan, has a relatively larger diameter than that of the haulage capstans, and has a cable wrap of greater than 180 degrees, but less than 306 degrees, preferably on the order of 220 degrees. Advantageously, the winch is driven by a chain of gears having the majority of the gears being mounted on shafts which lie substantially in a horizontal plane passing through the axes of the capstans.