Variable roller pump tubing

Details Variable roller pump tubing Variable roller pump tubing

1989-06-22

1990-09-04

Smith, Leonard E.

Pumps

Expansible chamber type

Elongated flexible chamber wall progressively deformed

417474, 138109, 138118, 138119, 138177, 138178, 604153, F04B 4312

Patent

active

049540556

ABSTRACT:
A variable diameter tube for use with a roller pump which is formed with a central large diameter section that is positioned in the roller pump raceway. This tube is formed with two end portions of substantially similar internal diameter with the diameter of the tube gradually increasing towards the central section. The gradual increase in diameter is no greater than about thirty degrees per inch and the wall thickness of the tubing wall is substantially equivalent along its entire length.

REFERENCES:
patent: Re25788 (1965-06-01), Sheridan
patent: Re29331 (1977-08-01), Naito
patent: 3046903 (1962-07-01), Jones
patent: 3175498 (1965-03-01), Rohrer
patent: 4031745 (1977-06-01), McCarty
patent: 4347874 (1982-09-01), Sullivan et al.
patent: 4499045 (1985-02-01), Obsomer
patent: 4515536 (1985-05-01), Van O's
patent: 4781548 (1988-11-01), Alderson et al.
patent: 4790356 (1988-12-01), Tash

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