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. 08, 1983
Filed:
Apr. 24, 1981
Applicant:
Inventor:
Walter Kropp, Aschaffenburg, DE;
Assignee:
Linde Aktiengesellschaft, Hollriegelskreuth, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B / ;
U.S. Cl.
CPC ...
13759613 ; 13762568 ;
Abstract
A hydraulic spool valve is provided for controlling the flow of fluid between a pump, a consumer of hydraulic energy and a reservoir which spool has pressure controlled by-pass means by-passing fluid from the fluid inlet of the valve to tank while the valve is moving from a neutral to a work position and the reverse thereof at a pre-selected pressure level.