Pipe joints or couplings – With assembly means or feature – Handle or handwheel for rotary engagement
Patent
1988-09-30
1990-02-27
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
Handle or handwheel for rotary engagement
285255, 285921, 285 81, 29525, F16L 3500
Patent
active
049039954
ABSTRACT:
An improved self-tightening fitting and fitting connector for use with soft tubing includes a stem having a flange at one end over which a piece of soft tubing may be pulled, and a sleeve which is slidable over the stem and has an inwardly extending lip with a contact surface thereon. A releasable ratchet mechanism prevents movement of the sleeve away from the flange, so that tubing can be secured tightly between the contact surface of the sleeve and the flange. When tension is applied to the tubing, the lip portion catches on the tubing, urging the contact surface tighter against the flange, preventing the tubing from creeping through the clamping couple formed by the sleeve and flange. When it is desired to disconnect the tubing, the ratchet mechanism can be released. The method of use is also disclosed.
REFERENCES:
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patent: 4109940 (1978-08-01), Reneau
patent: 4278279 (1981-07-01), Zimmerman
patent: 4317471 (1962-03-01), King
patent: 4436125 (1986-03-01), Blenkush
patent: 4500118 (1985-02-01), Blenkush
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patent: 4630847 (1986-12-01), Blenkush
patent: 4703957 (1987-10-01), Blenkush
patent: 4750764 (1988-06-01), Gibellina
4-Page Hardie Irrigation-Dura Pol.TM. brochure (Exhibit D).
Colder Products Company, 1989 catalogue entitled Quick Coupling for Plastic Tubing, pp. 1-36 (Exhibit E).
Photographs of LOC-EZE.RTM. Connector (Exhibits A, B, C).
Festo Pneumatic brochure entitled, "Pneumatic Fittings and Accessories from FESTO; Fittings, Connectors, Tubing, Accessories", (cover sheet and pp. 3 & 4), Exhibit A.
LEGRIS brochure entitled, "Push to Connect Fittings", (cover sheet and p. 3), Exhibit B.
Blenkush Brian J.
Sturm Blaine C.
Arola Dave W.
Colder Products Company
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