초록 ▼

A multi-ring gasket (24) and flanged pipe joint assembly employing such gasket. The gasket (24) for sealing the joint between two flanged pipes of polyvinylchloride, chlorinated polyvinylchloride or fiberglass-reinforced plastic pipe is provided. The gasket (24) has an inner ring (26), an outer ring

A multi-ring gasket (24) and flanged pipe joint assembly employing such gasket. The gasket (24) for sealing the joint between two flanged pipes of polyvinylchloride, chlorinated polyvinylchloride or fiberglass-reinforced plastic pipe is provided. The gasket (24) has an inner ring (26), an outer ring (28) and a plurality of spokes (30) connecting the inner ring (26) to the outer ring (28). Voids (34), or reduced thickness areas, are formed between the inner ring, the outer ring and the spokes so as to leave substantial space between the flanges at the voids and thereby reduce the uneven distribution of stress on the flanges when the gasket (24) is installed. The joint assembly employing such gasket (24) has a groove (50) disposed in an inside surface of a flange (12 or 16) and has a channel (51) disposed through the flange. The channel (51) is in communication with the groove (50) and, by means of a port (56), an outside surface of the flange.

대표청구항 ▼

[ I claim:] [1.] An assembly comprising:(a) a first flange;(b) a second flange disposed substantially adjacent and parallel to said first flange, thereby defining a joint between said first flange and said second flange, said second flange comprising an inside surface and an outside surface, a groov

[ I claim:] [1.] An assembly comprising:(a) a first flange;(b) a second flange disposed substantially adjacent and parallel to said first flange, thereby defining a joint between said first flange and said second flange, said second flange comprising an inside surface and an outside surface, a groove disposed in said inside surface, and a channel in communication, at one end thereof, with said groove and, at the other end thereof, with said outside surface of said flange;(c) a first strip of sealing material formed in a substantially-continuous loop having a predetermined shape, said first strip having an outer periphery whose size is greater than the inner periphery of said pipe flanges and being disposed between said first flange and said second flange;(d) a second strip of sealing material formed in a substantially-continuous loop having a predetermined shape, said second strip having an inner periphery whose size is greater than said outer periphery of said first strip and less than the outer periphery of said flanges and being disposed between said first flange and said second flange;(e) a plurality of fasteners disposed around said flanges; and(f) a plurality of spokes of sealing material, each disposed between and attached to said first strip and said second strip, and extending between said first strip and said second strip, said first strip, said second strip and said spokes having a substantially uniform thickness between said inner periphery of said flanges and said outer periphery of said flanges.