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:
May. 19, 1987
Filed:
Apr. 29, 1986
Peter D Giacobbi, Villa Park, CA (US);
Johnston Pump/General Valve, Inc., Glendora, CA (US);
Abstract
An improved cam sleeve operator for use primarily with valves of the plug type in which a tapered plug is raised to unseat associated slips and then rotated to a valve open position during opening of the valve and is rotated to a valve close position and lowered to seat the associated slips for closing the valve. The operator comprises a cylindrical housing having an inverted L-shape configuration, a cam sleeve which controls the position of the valve trunnion in response to the prime mover, and a pin connecting the valve trunnion to the operator for effecting sequential vertical and rotational motion of the valve trunnion in response to unitary continuous motion of the prime mover. One particularly advantageous feature of the present invention is a uniquely shaped cam sleeve slot or helical groove of varying angle which optimizes the application of input torque for reducing prime mover peak torque requirements and for simplifying the operator structure thus reducing costs of manufacture and maintenance and significantly prolonging the operational life of the valve operator as well as reducing the overall energy consumption for each valve actuating operation.