Torque pinch valve

US4436277A · kind A · utility

Inventors

• Edward Robak · Orange, US
• Carter K. Reh · Santa Ana, US

Key dates

• Filing date: Aug 10, 1981
• Grant date: Mar 13, 1984
• Expiry date: Aug 10, 2001

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16K7/06
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

There is disclosed a pinch valve of greatly improved performance. The pinch valve has a housing with end plates having apertures forming a through passageway to receive a flexible conduit. The housing is split through the apertures of the end plates, into two halves, forming upper and lower saddles that are detachably interconnected to permit assembly of the housing about a flexible conduit, thereby eliminating cutting or breaking of the flexible conduit to insert or to relocate the pinch valve. The upper half of the housing carries a stationary bar or anvil and a circular cam actuator moves the valve member through a complete, 360 degree, rotation in a sinusoidal action movement. This action gives the valve a great mechanical advantage at shutoff position, permitting use of a small, lightweight valve structure.