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. 10, 2008
Filed:
Jun. 16, 2004
Applicant:
Colin Gradwell, Melksham, GB;
Inventor:
Colin Gradwell, Melksham, GB;
Assignee:
Knorr-Bremse Rail Systems (UK) Ltd., Melksham, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A sliding seal arrangement in particular for a valve having an anodised aluminium coating in contact with the seal. The coating is produced so that inclusions in the surface of the coating are substantially aligned. The direction of motion of the sliding seal in use is then substantially aligned with the direction of the inclusions resulting in greatly reduced wear on the seal.