Pipe joints or couplings – Nonmetal to metal – Internal member
Patent
1993-07-19
1995-05-23
Nicholson, Eric K.
Pipe joints or couplings
Nonmetal to metal
Internal member
285903, 285242, F16L 3322
Patent
active
054174600
ABSTRACT:
An apparatus for attaching and securing a drain hose to the adapter used with a recreational vehicle ("RV") waste drain assembly or, at the opposite end of the hose, to a sewer fitting used in conjunction with a septic tank or some other type of in or above ground sewer system for receiving drained waste matter. The apparatus comprises a retaining ring, which may include an annular flange formed along one edge, slidably mountable inside the opening at one end of a RV drain hose, for retaining the shape and requisite diameter dimension of the end section of the hose to facilitate its engagement with the adapter or the sewer fitting when those connections are made. The ring is removed before the adapter or the sewer fitting engages the hose opening to enable the hose to contract and form a tight seal with those components.
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patent: 3760430 (1973-09-01), Brenden
patent: 4133347 (1979-01-01), Mercer
patent: 4152014 (1979-05-01), Soeffker
patent: 4483556 (1984-11-01), LiVolsi
patent: 4643229 (1987-02-01), Hickin
patent: 4763932 (1988-08-01), Matz et al.
patent: 4796926 (1989-01-01), Rapsilver
patent: 4854349 (1989-08-01), Foreman
patent: 5082315 (1992-01-01), Sauer
patent: 5333910 (1994-08-01), Bailey
Nicholson Eric K.
Valterra Products Inc.
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