초록 ▼

An arm-driven sleeve valve utilizes a single pin connection to transmit torque from a shaft of the sleeve valve to a pair of arm portions suspended therefrom for controlling the flow of fluid from the valve by axially moving a gate. The single pin connection is centrally positioned between the arm p

An arm-driven sleeve valve utilizes a single pin connection to transmit torque from a shaft of the sleeve valve to a pair of arm portions suspended therefrom for controlling the flow of fluid from the valve by axially moving a gate. The single pin connection is centrally positioned between the arm portions and ensures the each of the arm portions exerts an equal force on the gate, regardless of torsional deflection of the shaft. Use of the invention allows arm-driven sleeve valves to be driven asymmetrically from only one of opposite axial ends of the shaft without tending to bind the gate against the main body of the valve.

대표청구항 ▼

[ What is claimed is:] [1.]1. A sleeve valve comprising:a main body having a generally cylindrical exterior surface defining a central longitudinal axis and an interior surface defining an internal fluid passage, the main body also having at least one opening connecting the internal fluid passage to

[ What is claimed is:] [1.]1. A sleeve valve comprising:a main body having a generally cylindrical exterior surface defining a central longitudinal axis and an interior surface defining an internal fluid passage, the main body also having at least one opening connecting the internal fluid passage to an environment external of the valve, the opening being adapted for passage of fluid therethrough;a tubular gate slidably mounted around the main body for axial movement between closed and open positions relative to the main body, the gate and main body being adapted to permit fluid flow through the at least one opening of the main body when the gate is in the open position and to prevent fluid flow through the at least one opening when the gate is in the closed position;a shaft having a shaft axis spaced laterally from the central longitudinal axis of the main body and perpendicular to a central plane containing the central longitudinal axis, the shaft being operatively connected to the main body for rotation about the shaft axis; anda pair of arm portions extending at an angle from the shaft axis and being connected to the shaft in a manner to rotate with the shaft about the shaft axis in a swinging manner relative to the main body, one of the pair of arm portions being connected to the gate on a first side of the central plane and the other of the pair of arm portions being connected to the gate on a second opposite side of the central plane for axially moving the gate between the closed and open positions upon rotation of the shaft, the pair of arm portions being connected to the shaft in a manner such that each of the pair of arm portions will exert an equal force on the gate independently of any torsional deflection of the shaft when torque is exerted on the shaft.