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:
Feb. 28, 1978
Filed:
Feb. 27, 1975
Applicant:
Inventor:
Harry Spielvogel, Dusseldorf, DT;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251285 ; 251 42 ; 251 60 ; 251 634 ; 251 635 ; 251284 ;
Abstract
A hydraulic valve has a valve member whose travel is limited at one end by an abutment. The abutment is part of a hydraulic piston-cylinder arrangement, and when the piston-cylinder arrangement is pressurized and the valve member is moved to the end of its travel, the abutment is held in a first position where the valve is only open to a small extent. If the piston-cylinder arrangement is then pressure-relieved, the force moving the valve member against the abutment displaces the abutment so that the valve can open further.
Spielvogel, Harry. (1978). Hydraulic valve (U.S. Patent No. 4076210). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4076210
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile