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:
Jun. 20, 1978
Filed:
May. 31, 1977
Applicant:
Inventor:
Robert F Hodgson, Youngstown, OH (US);
Assignee:
Commercial Shearing, Inc., Youngstown, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F15B / ;
U.S. Cl.
CPC ...
13759613 ; 137860 ;
Abstract
A pressure compensated directional control valve is provided which automatically regulates the position of the valve depending upon the load so as to maintain a constant flow of fluid by means of check valve members in the spool in the form of a resilient or flexible band in a groove surrounding the valve spool and covering the outer ends of the radial passages from the internal spool chambers.