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:
Jun. 21, 1977
Filed:
Jan. 07, 1976
Applicant:
Inventor:
David Arthur Evans, Bristol, EN;
Assignee:
Strachan & Henshaw Limited, Bristol, EN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B61K / ;
U.S. Cl.
CPC ...
188 62 ;
Abstract
A rail wheel gripper for holding or retarding a rail vehicle has opposed gripper mechanisms that engage a wheel between them. Each mechanism comprises a carrier arm for a gripper member and upper and lower pivot arms connected to the carrier arm controlling the path of movement of the gripper member. Each mechanism is so arranged, and a drive device co-operates with it, as to exhibit a mechanical advantage with increased gripping force when the opposed gripper members reach their operative positions, and a mechanical disadvantage with magnified displacement of the members when they are remote from their operative position.