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:
Nov. 07, 2017
Filed:
Mar. 08, 2013
Parker-hannifin Corporation, Cleveland, OH (US);
Paul E. Lemay, Saint Paul, MN (US);
Timothy T. Marquis, Otsego, MN (US);
Michael R. Gose, Frederic, WI (US);
Andrew J. Holst, Plymouth, MN (US);
Parker-Hannifin Corporation, Cleveland, OH (US);
Abstract
A coaxial couplingincludes a female coupling halfand a male coupling half. The couplingis used in a hydraulic circuitthat includes a multistage hydraulic pumpand a hydraulic machine. The coupling is used in the circuitto connect components when the pump is running. The coupling halves have a disconnected configuration (FIG.), a connection initiation configuration (FIG.), and a fully connected configuration (FIG.). Coupling halfincludes a manually actuated restrictorthat signals the pumpto move to a low flow condition independently of load demand from the machinein the connection initiation configuration. This reduces the forces required to move the coupling halves from the connection initiation configuration to the fully connected configuration.