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. 07, 1978
Filed:
Nov. 17, 1975
Applicant:
Inventor:
Carlo Pensa, Como, IT;
Assignee:
Massey-Ferguson Services N.V., Curacao, NE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ; F01B / ;
U.S. Cl.
CPC ...
417218 ; 91506 ;
Abstract
A pump is provided with a regulating device which includes a valve and a motor. The motor operates on the pump to vary the capacity thereof. Movement of the motor is controlled by the valve which has a spool and a body. A feedback link is provided between the motor and the body so that movement of the motor due to a displacement of the spool moves the body to return the valve to neutral. Hunting of the transmission is thus reduced.
Quick Actions:
Pensa, Carlo. (1978). Control systems for variable capacity hydraulic machines (U.S. Patent No. 4077744). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4077744
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile