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:
Jul. 14, 1992
Filed:
Apr. 24, 1990
Applicant:
Inventors:
Ronald F Howarth, Delta, British Columbia, CA;
Domenico Ciolfitto, Burnaby, British Columbia, CA;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B / ;
U.S. Cl.
CPC ...
13762564 ; 83712 ; 91461 ; 13762563 ; 13762566 ;
Abstract
A control system particularly for use for saw mill machinery utilizing large pneumatic actuators. A joystick provides an electrical control signal to a hydraulic proportional pilot valve which, in turn, hydraulically controls a valve body which controls the flow of air to the pneumatic actuator.