Internal conduit sealing member and band

Details Internal conduit sealing member and band Internal conduit sealing member and band

1998-02-20

2000-10-03

Browne, Lynne H.

Pipe joints or couplings

With fluid pressure seal

Expansible internal sleeve-type gasket

285397, 138 97, F16L 3316

Patent

active

061262064

ABSTRACT:
The present invention provides an internal conduit seal for conduits and pipes having an elongated elastomeric seal with first and second seal segments adjacent to the edges of the seal. The sealing segments are made up of a plurality of sealing ribs and restraining members placed externally of the ribs in each segment. The seal includes grooves positioned over each segment for expansion bands used to compress the seal against the inside of a conduit. The invention also includes an expansion band having a radiused contacting surface which in combination with a locking member of the invention positioned between an outer restraining member and an adjacent rib providing substantially improved sealing.

REFERENCES:
patent: 2615740 (1952-10-01), Nathan
patent: 4303103 (1981-12-01), Marks et al.
patent: 4469467 (1984-09-01), Odill et al.
patent: 4685704 (1987-08-01), Kolar
patent: 4927189 (1990-05-01), Burkit
patent: 5163717 (1992-11-01), Wise
patent: 5911446 (1999-06-01), McLennan et al.

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