Pipe joints or couplings – Essential catch – Coil spring
Patent
1988-07-21
1990-03-06
Reese, Randolph A.
Pipe joints or couplings
Essential catch
Coil spring
285305, F16L 3722
Patent
active
049060317
ABSTRACT:
A coupling comprising an outer socket or receptacle part having an internal opening, and a nipple or insert part which is sized to be inserted into the opening of the receptacle part. The receptacle and insert parts are provided with outer and inner lock ring grooves, respectively, which are substantially aligned in the radial direction when the parts are assembled. A garter spring is located in and extends between the two grooves when the parts are assembled in order to lock the parts together. The groove of one of the two parts has an arcuate surface and the radius of the surface is substantially the same as the radius of the coils of the spring, whereby the arcuate surface supports the coils and retards flattening of the coils. The groove of the other of the two parts has a surface which overlies the spring and holds the spring in place in the grooves even if the spring should break.
REFERENCES:
patent: 2693378 (1954-11-01), Beyer
patent: 2846240 (1958-08-01), Beyer
patent: 2922665 (1960-01-01), Beyer
patent: 3479068 (1969-11-01), Brittain
patent: 3540760 (1970-11-01), Miller
patent: 3574359 (1971-04-01), Klein
patent: 4055359 (1977-10-01), McWethy
patent: 4063760 (1977-12-01), Moreiras
patent: 4138146 (1979-02-01), Rumble
patent: 4376525 (1983-03-01), Fremy
patent: 4401326 (1983-08-01), Blair
patent: 4565392 (1986-01-01), Vyse
patent: 4645245 (1987-02-01), Cunningham
Knight Anthony
Reese Randolph A.
Stratoflex, Inc.
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