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:
Oct. 09, 2018
Filed:
Feb. 03, 2017
Caterpillar Sarl, Geneva, CH;
Mito Kogyo Company Limited, Tokyo, JP;
Seiji Iijima, Tokyo, JP;
Takayuki Naito, Tokyo, JP;
Satoshi Fujita, Hyogo, JP;
Ryota Suejima, Tokyo, JP;
Caterpillar SARL and Others, Geneva, CH;
Abstract
A grease injection valveis provided having a valve bodyincluding a flow paththe valve body. A foreign matter intrusion prevention valveis provided at the upstream side of a check valvein the flow pathof valve body. Groovesare positioned around the periphery of a foreign matter intrusion prevention valve bodyin the flow pathto provide communication between the downstream side and the upstream side of the foreign matter intrusion prevention valve body. When the check valvehas a functional failure, high-pressure grease escapes through the groovesto bypass the foreign matter intrusion prevention valve bodyand is discharged to an exterior of the grease injection valve. This can avoid excessive pressure caused by the grease backflow from being applied to the foreign matter intrusion prevention valve