Valve actuator

Abstract

Abstract 1,129,982. Valves. RAMCON CORP. 22 Oct., 1965 [22 Oct., 1964], No. 44845/65. Heading F2V. [Also in Divisions H1 and H2] A rotatable ball plug valve 22 is actuated by an electric motor 36 through gearing 34 and a claw type coupling 16, Figs. 3-6 (not shown). The motor output spindle 44 carries a cam 50 which operates a switch 48 in the motor circuit to stop the output shaft at 90 degree positions corresponding to the open and closed positions of the valve. The switch has a movable contact 64 loaded by an over-centre spring 60 connected to a follower 68. The cam has bearing portions 77, 78 which hold the switch closed over the desired range, and at the trailing ends of these portions the cam is undercut at 79, 80 so that the follower 68 drops off sharply to open the switch. A manual change-over switch (81) is included in the circuit, Fig. 12 (not shown), whereby the capacitor motor (36) can be started for clockwise rotation, Fig. 7, depending on which of the contacts (54, 56) is engaged by the switch arm (64).

Inventors

• 👤 Jr Frank J Raymond

Bibliographic Details