Pipe joints or couplings – Essential catch – Pivoted
Patent
1990-01-25
1991-08-27
Arola, Dave W.
Pipe joints or couplings
Essential catch
Pivoted
285312, 285924, F16L 3900
Patent
active
050428500
ABSTRACT:
A latch cam and groove-type quick disconnect coupling includes a tubular socket having radial openings therethrough on opposite sides thereof, and a latch cam receiving third opening extending radially therethrough at a location circumferentially equidistant from said radial openings. A tubular adapter insertable in the socket carries arcuate recesses in its outer surface at locations alignable with the three radial openings at the time of such insertion. Two coupling handles are pivotally mounted on the socket outer surface, and carry cam heads projectable through said first mentioned pair of radial openings, and into two of said arcuate recesses in the adapter. A latch cam element pivotally mounted on the outer surface of said socket adjacent the third opening through the socket includes a tip which projects through the third opening in the socket, and is selectively movable into one of the arcuate recesses in the adapter. The geometry of the latch cam element prevents separation of the adapter from the socket if the coupling handles are opened with pressure in the line in which the socket and adapter are located.
REFERENCES:
patent: 2478586 (1949-08-01), Krapp
patent: 2621061 (1952-12-01), Beymer
patent: 2641490 (1953-06-01), Krapp
patent: 2770474 (1956-11-01), Krapp
patent: 3195934 (1965-07-01), Parrish
patent: 3439942 (1969-04-01), Moore et al.
patent: 4295670 (1981-10-01), Goodall et al.
patent: 4802694 (1989-02-01), Vargo
patent: 4871195 (1989-10-01), Parrish
Bulletin BLC-83 "Boss-Lock", Dixon Valve and Coupling Company.
Arola Dave W.
Central Machine and Tool Company
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