Pipe joints or couplings – Variable length – Telescopic with relative motion
Patent
1995-03-03
1996-04-23
Arola, Dave W.
Pipe joints or couplings
Variable length
Telescopic with relative motion
285 92, 285 31, 285101, 285111, F16L 27107
Patent
active
055096980
ABSTRACT:
An axially extendible conduit that includes an elastic conduit member and an actuator means. The elastic conduit member extends from a first terminal end to a second terminal end. The actuator means encircles the elastic conduit member. The first terminal end of the elastic conduit member is attached to a fixed end of the actuator means. The second terminal end of the elastic conduit member is attached to a ring member of the actuator means. The first terminal end of the elastic conduit member includes an integral gasket or sealing surface for providing a dustless seal with an abutting apparatus. The second terminal end includes an integral seal means for providing a dustless seal with an abutting receptacle. Selective actuation of the actuator means moves the ring member from a retracted position to an extended position. The actuator means may be a single acting or a double acting type of linear actuator. The inside diameter of the elastic conduit member may be uniform or tapered. The inside diameter of the elastic conduit member further provides a continuous smooth surface for material to flow through.
REFERENCES:
patent: 3427051 (1969-02-01), White et al.
patent: 3473828 (1969-10-01), Pearson
patent: 3490792 (1970-01-01), Piegza
patent: 3713623 (1973-01-01), Pearson
Arola Dave W.
Pinto Patrick J.
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