Power actuated valve
AssigneeThe Parker & Harper Manufacturing Company, Inc.
InventorsRoger G. Massey, David G. Holloway
Life of this patent
Estimating the term…
Abstract
A power actuated 90.degree. rotation valve in which the power actuator is coupled to the valve stem by a socket which simultaneously engages a lug fixed with the valve stem and a nut threaded to said valve stem so that the nut cannot loosen during actuation of the valve.
Claims10
In a power actuated valve comprising a valve operable from fully open to fully closed position by ninety degree rotation of a valve stem, a power actuator for rotating said valve stem and coupling means to couple said actuator to said valve stem, the combination in said coupling means comprising:
- a. a washer having at least one laterally protruding lug fitted over said valve stem;
- b. a nut threaded over said valve stem on top of said washer;
- c. a socket connected to said actuator for rotation thereby having at least one slot in its sidewall for receiving said lug and a series of points on its inner sidewall for engaging said nut;
- and,
- d. means to clamp said actuator to said valve to secure said socket over said stem.
A power actuated valve operating from fully closed to fully open by 90.degree. rotation comprising:
- a. a power actuator in a first body;
- b. a gear driven rotatable shaft passing entirely through said first body to provide the output of said actuator;
- c. an indicator at a first end of said shaft outside of said first body;
- d. a socket coupling at a second end of said shaft;
- e. a valve in a second body;
- f. a valve stem extending from said second body and secured thereto by an external nut;
- g. a shaped washer having at least one extending tang secured to said stem under said nut;
- and,
- h. mounting means for clamping said first body to said second body with said socket engaging both said tang and said nut.
Dependencies are inferred from the claim text.