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. 04, 2022
Filed:
Nov. 11, 2020
Kubota Corporation, Osaka, JP;
Naoya Okamoto, Sakai, JP;
Norita Tottori, Sakai, JP;
Kubota Corporation, Osaka, JP;
Abstract
A valve unit (V) has a valve housing () that includes a supply oil passage () configured to receive operating oil from a hydraulic pump, and a pressure adjustment valve (Va) configured to adjust the pressure of the supply oil passage (). The pressure adjustment valve (Va) includes a pressure adjustment valve body () configured to open and close the supply oil passage (), a compression coil spring () that keeps the pressure adjustment valve body () at a closed position when the pressure of the supply oil passage () is smaller than a set value and allows the pressure adjustment valve body () to open when the pressure of the supply oil passage () is not smaller than the set value, and a restriction member () configured to, when the pressure adjustment valve body () becomes open against the urging force of the spring () in response to a pressure of the operating oil, abut against the pressure adjustment valve body () to restrict movement of the pressure adjustment valve body ().