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. 02, 2015
Filed:
Aug. 03, 2011
Uwe Stein, Lothian, GB;
Jens Eilers, Lothian, GB;
Gordon Voller, Lothian, GB;
ARTEMIS INTELLIGENT POWER LIMITED, Midlothian, GB;
Abstract
A face sealing annular valve () for a fluid-working machine has an annular valve member () having a relaxed configuration in which a first seat-engaging surface () of the annular valve member can sealedly engage with a first sealing surface of an annular valve seat (), but a second seat-engaging surface () cannot sealedly engage with a second sealing surface (), and is elastically deformable to a deformed configuration in which the second seat-engaging surface can sealedly engage with a second sealing surface, while the first seat-engaging surface remains sealedly engaged with the first sealing surface. The annular valve member can be made with relatively high tolerances and is only loosely retained by a guide in the relaxed configuration.