초록 ▼

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 ou

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.

대표청구항 ▼

A first pipe member having a socket formed by an end portion thereof and a radially outwardly directed annular groove in the wall of the pipe member end portion, a sealing ring of resiliently deformable material disposed inside the pipe member end portion in the groove and a retaining ring received

A first pipe member having a socket formed by an end portion thereof and a radially outwardly directed annular groove in the wall of the pipe member end portion, a sealing ring of resiliently deformable material disposed inside the pipe member end portion in the groove and a retaining ring received within an internal recess in the packing ring, said packing ring having an outer peripheral portion formed to fit within the pipe member wall defining the groove and front and rear projections situated respectively axially in front of and behind the retaining ring to the side thereof adjacent the open end of the socket, said front projection having an inner sealing lip (20) extending rearwardly from said front projection (11) towards the rear projection (12′) to engage over said internal recess (10) and retaining ring (5) into compressive contact with said rear projection (12′) to transmit compressive forces to the rear projection (12′) on insertion of the second pipe member (6) into the socket (2), said projections on said sealing ring upon insertion of said second pipe member into the socket forming in co-operation therewith, pressure shoulders positioned to act so as to compress the packing ring against the pipe member wall defining the groove over the whole outer peripheral portion of the sealing ring.