Rotary fluid couplings

US4108294A · kind A · utility

Assignee

• Twiflex Couplings Limited · GB

Inventors

• John V. Stewart · Orlando, US
• Roger Stevens · Teddington, GB

Key dates

• Filing date: Mar 1, 1976
• Grant date: Aug 22, 1978
• Expiry date: Mar 1, 1996

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/86268
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A rotary fluid coupling which is particularly suitable for connecting a stationary source of fluid pressure to a fluid-pressure operated clutch comprises inner and outer, concentric, relatively rotatable members which have a space between them constituting a generally annular chamber for receiving pressurized fluid. The chamber is sealed to prevent the leakage of fluid by a releasable sealing mechanism which is itself fluid-pressure operated. Passages extend through the two members to connect the chamber to the stationary and rotary fluid lines. Preferably, the inner member rotates relative to the outer member which may be held relatively stationary against rotation.