Pipe coupler

Details Pipe coupler Pipe coupler

1978-12-20

1980-10-21

Arola, Dave W.

Pipe joints or couplings

Flexible joint, rigid members

Resilient sleeve type

285369, 285383, 285423, F16L 2102

Patent

active

042290287

ABSTRACT:
A coupler for connecting adjacent ends of clay pipe with a generally cylindrical flexible sealing member of urethane or the like having opposing inner and outer central grooves which extend circumferentially and pairs of circumferentially extending outer support grooves flanking the outer central groove. Rigid rings of fiberglass are provided in the grooves. The central ring has an inwardly extending stop portion and unitary sealing lips are provided on the interior surface of the sealing members between the support grooves of each pair.

REFERENCES:
patent: 3104898 (1963-09-01), MacDonald et al.
patent: 3394952 (1968-07-01), Garrett
patent: 3419290 (1968-12-01), Campbell et al.
patent: 3484121 (1969-12-01), Quinton
patent: 3558164 (1971-01-01), Hovell

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