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:
Aug. 04, 1987
Filed:
Apr. 30, 1986
John Whiteley, Clitheroe, GB;
Hollingsworth UK Ltd., Accrington, GB;
Abstract
A drive ram, particularly for a yarn winder, has the piston rod freely movable relative to both the piston and the ram cylinder in a first condition in which a locking washer is perpendicular to the longitudinal axis of the piston rod. Upon application of fluid pressure to effect relative movement of the piston and the cylinder, the locking washer is spring-urged against a wedge-like tipping washer which skews the lockingwasher and causes it to clamp the piston rod whereby the piston rod is then driven by the ram through a predetermined travel, from a starting position which is governed only by the diameter of the package at the time of operation of the package lift mechanism. This allows a virtually constant lift travel of the ram, regardless of the diameter of the package at the time of operation of the ram.