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. 16, 2017
Filed:
Jul. 22, 2013
Caterpillar Inc., Peoria, IL (US);
Matthew J. Beschorner, Plainfield, IL (US);
Eric C. Hughes, Metamora, IL (US);
Mikhail A. Sorokine, Naperville, IL (US);
James A. Aardema, Plymouth, MN (US);
Thomas J. Hajek, Lockport, IL (US);
Aleksandra M. Egelja, Naperville, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A system can include one or more valve arrangements with a working chamber to receive a working fluid at a first pressure, and a control chamber to receive fluid at a second pressure. A dynamic seal can be disposed on a land of a valve element. The valve arrangement may include a sleeve against which the dynamic seal is slidably engaged. The valve element may include a check stem. A pressure compensating system may be in communication with bores formed in with the valve element. A pressure system to monitor dynamic seal wear may be in communication with the control chamber of the valve arrangement.