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:
Dec. 18, 1979
Filed:
Feb. 08, 1977
Hubert Maisonneuve, West Columbia, SC (US);
Canron Inc., New York, NY (US);
Abstract
A hydro mechanical condition-responsive servo control valve for controlling a variable condition, such as position or rate of change of position, of a remote element, comprises a rotary fluid valve controlled by a differential gear train arranged to register differential movement between two input shafts, one of which is connected for movement according to a desired input condition and the other of which is alternatively connected either to register the actual element condition or a reference [datum] condition; the rotary valve including mating stationary and rotary valve plates each incorporating fluid flow ports cooperatively arranged on the mating plate surfaces thereby to control fluid flow from a fluid inlet to a fluid outlet in accordance with the relative position or movement of said two input shafts.