Pipe coupler

Details Pipe coupler Pipe coupler

1990-10-25

1992-11-17

Arola, Dave W.

Pipe joints or couplings

Flexible joint, rigid members

Resilient sleeve type

285903, F16L 2108

Patent

active

051637170

ABSTRACT:
A coupler for use with pipe is disclosed having a unitary tubular structure with an inner and an outer surface. The inner surface has at least one and preferably three interiorly depending ribs. The outer surface is preferably corrugated and has formed therein a plurality of valleys. The inner surface also has a plurality of valleys formed therein which may have associated therewith pressure beads. The inner surface valleys are disposed between adjacent interiorly depending ribs. The coupler preferably has its tubular structure encircled with means for clamping the coupler more tightly to a pipe. Also disclosed is the combination of the coupler securing adjacent pieces of corrugated double-wall plastic pipe to one another.

REFERENCES:
patent: 3239254 (1966-03-01), Campbell
patent: 3753287 (1973-08-01), Ziemek et al.
patent: 3938834 (1976-02-01), Oostenbrink
patent: 4141576 (1979-02-01), Lupke et al.
patent: 4149740 (1979-04-01), Hall
patent: 4229028 (1980-10-01), Gray
patent: 4443031 (1984-04-01), Borsh et al.
patent: 4674074 (1987-03-01), Pate et al.
patent: 4795197 (1989-01-01), Kaminski et al.
patent: 4871198 (1989-10-01), Hattori et al.
patent: 4913473 (1990-04-01), Bonnema et al.
patent: 5006376 (1991-04-01), Arima et al.

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