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. 13, 2018
Filed:
Nov. 20, 2015
Parker-hannifin Corporation, Cleveland, OH (US);
Christopher John Webber, North Royalton, OH (US);
Parker-Hannifin Corporation, Cleveland, OH (US);
Abstract
Provided is a hydraulic valve including a valve body having a first port, a second port, and a pilot port, and a piston movable in the valve body to an open position by a pilot pressure flowing through the pilot port that acts on a portion of the piston to move the piston away from a valve seat in the body to allow fluid flow between the first and second ports. The piston is then movable to the closed position by a resilient member in the absence of the pilot pressure. In this way, during an event such as a power failure of a vehicle when the pilot pressure is unavailable, the valve is closed to prevent fluid draining from a hydraulic function to prevent movement of the function without using a mechanical locking device.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile