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. 20, 1980
Filed:
Sep. 19, 1977
Applicant:
Inventors:
Jack Burnham, Melksham, GB;
Jack Washbourn, London, GB;
Assignees:
Avon Industrial Polymers Limited, Melksham, GB;
Westinghouse Brake & Signal Co. Ltd., London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01B / ; F16J / ;
U.S. Cl.
CPC ...
92159 ; 92160 ; 92240 ; 92250 ;
Abstract
A piston-cylinder arrangement comprising a cylinder member and piston means mounted slideably therein, the piston means comprising a piston member and a packing member mounted on the piston member for movement therewith, wherein said packing member has first and second axially spaced radially outer surfaces dimensioned such that each contacts slidingly against said cylinder wall and wherein the piston means comprises a lubricant reservoir in communication with the space between said surfaces, which space is substantially closed by said cylinder wall.