Sealing joint and retaining ring for pipe grooved bell and straight spigot joint

US4572523A · kind A · utility

Assignee

• Wavin B.V. · NL

Inventors

• Ali Guettouche · Geeste, DE
• Bernhard Lodder · Hardenberg, NL

Key dates

• Filing date: Jul 15, 1983
• Grant date: Feb 25, 1986
• Expiry date: Jul 15, 2003

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16L21/03
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A pipe member having at one end a socket for the insertion of a further pipe member and a corrugation in the wall of the socket containing a packing ring of resiliently deformable material, and a retaining ring received in an internal recess in the packing ring has its packing ring formed with an outer peripheral portion to fit the contour of the corrugation and annular front and rear projections situated respectively axially in front of and to the rear of the retaining ring to co-operate with the inserted pipe member to form pressure shoulders between which the retaining ring is disposed in the central region of the packing ring, the pressure shoulders transmitting compressive forces to the outer peripheral portion of the packing ring, the outer peripheral portion of the packing ring extending over the two pressure shoulders and over the retaining ring to bear against the corrugation under compressive load.