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:
Oct. 14, 1986
Filed:
Aug. 23, 1983
Petrus J Schils, Breda, NL;
Keystone International, Inc., Houston, TX (US);
Abstract
The invention comprises an improved override and an interrelated valve system. A main valve has an actuator, the actuator in turn having a control for communicating a control signal to the actuator for selectively causing the actuator to place the main valve in its open or closed position. The override is associated with the main valve and selectively shiftable between an engaged mode in which the override is operatively connected with the main valve for moving the main valve between its open and closed positions, and a disengaged mode in which the operative connection between the override and the main valve is interrupted, whereby the main valve may move independently of the override. A shut-off functionally interconnects the override and the actuator control and is operative, upon shifting of the override to its engaged mode, to block the control signal from the actuator. The override includes a housing, a driven gear in the housing connected to the valve element of the main valve, a clutch shaft mounted in the housing for rotation about its own axis, a drive shaft rotatably mounted in the clutch shaft, with the axis of the drive shaft parallel to but eccentrically spaced from the axis of the clutch shaft, and a drive gear generally opposed to the driven gear and coaxially carried by the drive shaft for rotation therewith. By rotation of the eccentric clutch shaft, the two gears may be engaged and disengaged.