Valve closing mechanism
First Claim
Patent Images
1. A valve assembly with combined valve closing mechanism, comprising:
- a valve body having an outlet;
valve means associated with the outlet;
a spindle mounted for rotation relative to the valve body and coupled to the valve means whereby rotation of the spindle in one sense effects valve closure and rotation in the opposite sense effects valve opening;
a stand-off arm adapted for attachment to the valve body;
a lever arm connected to the valve spindle via a one-way drive transmitting arrangement whereby the spindle is rotated when the lever arm is displaced in one direction but remains stationary when the lever arm is displaced in the opposite direction; and
an actuator acting between the stand-off arm and the lever arm for effecting angular oscillatory movement of the lever arm, wherein the standoff arm, the lever arm and the drive arrangement are embodied in an assembly which can be assembled and detached from the valve body as a unit, and the assembly includes means to readily allow attachment to or detachment from the valve body.
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Abstract
A valve closing mechanism comprises a stand-off arm (18) adapted for attachment to the valve body, a lever arm (22) incorporating a fitting (24) for connection to the valve spindle (16), and an actuator (26) acting between the stand-off arm (18) and the lever arm (22) for effecting angular oscillatory movement of the lever arm, said fitting comprising a one-way drive transmitting arrangement whereby the spindle is rotated when the lever arm is displaced in one direction but remains stationary when the lever arm is displaced in the opposite direction.
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Citations
6 Claims
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1. A valve assembly with combined valve closing mechanism, comprising:
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a valve body having an outlet; valve means associated with the outlet; a spindle mounted for rotation relative to the valve body and coupled to the valve means whereby rotation of the spindle in one sense effects valve closure and rotation in the opposite sense effects valve opening; a stand-off arm adapted for attachment to the valve body; a lever arm connected to the valve spindle via a one-way drive transmitting arrangement whereby the spindle is rotated when the lever arm is displaced in one direction but remains stationary when the lever arm is displaced in the opposite direction; and an actuator acting between the stand-off arm and the lever arm for effecting angular oscillatory movement of the lever arm, wherein the standoff arm, the lever arm and the drive arrangement are embodied in an assembly which can be assembled and detached from the valve body as a unit, and the assembly includes means to readily allow attachment to or detachment from the valve body. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification