Fluid flow control valve

US3974869A · kind A · utility

Inventors

• Michio Abe
• Tomio Urokohara · Kita Nagoya, JP

Key dates

• Filing date: Nov 4, 1974
• Grant date: Aug 17, 1976
• Expiry date: Nov 4, 1994

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/7036
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

Fluid flow control valves such as plug valves or cocks have the plugs thereof supported and sealed in the valve housing by a rigid but somewhat elastic plastics bearing member which is preloaded and compressed from its free state condition and seeks to reclaim this condition for taking up wear and preventing leakage in the valve assembly. The bearing member is preferably stretched over the plug and compressed in the housing by a retainer which is pressed into one end of the housing.