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:
Mar. 11, 2014
Filed:
Jul. 01, 2010
Katsumi Tamura, Omitama, JP;
Kazumasa Horii, Toyonaka, JP;
Knud Jensen Meldgaard, Nordborg, DK;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
There is provided a circulation line () for circulating pressurized oil from an accumulator () into a housing () of a steering valve (). An orifice joint () is provided along the path of the circulation line (). The orifice joint () is removably mounted on the housing () of the steering valve () from outside. An orifice portion () of the orifice joint () applies a throttling function to the circulating oil liquid whereby a frictional heat is generated therein. The oil liquid in a warm state flows through a communication passage (), passages in a spool valve (), and a low pressure side passage (B), thus enabling the steering valve () to be always in a warm state.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile