Pipe joints or couplings – Essential catch – Leaf spring
Patent
1993-10-12
1996-07-30
Reese, Randolph A.
Pipe joints or couplings
Essential catch
Leaf spring
2853324, 2853825, 29509, F16L 3900
Patent
active
055404634
ABSTRACT:
A coupling (10) for connecting hoses or other conduits carrying refrigerant material in an automobile air conditioning system has a male end (12) and a female end (14). The male end has an extending portion (26) which is accepted into an aperture (50) in the female end when the coupling ends are connected. A pair of o-aring seals (34), seal the ends in fluid tight engagement when they are connected. Finger portions (24) on legs (22) of a leaf spring (20) mounted on the male end, engage steps (68) on the female end to hold the coupling ends together when engaged. The legs nest in slots (64) to prevent relative rotation of the coupling ends. Tapered portions (66) of the slots provide for ease of engagement of the coupling ends. The legs of the leaf spring are biased apart as the coupling ends are pushed together until the finger portions engage the steps. Disengagement is achieved by spreading the legs of the leaf spring with a special tool (72) and separating the coupling end. Alternative female coupling ends (86, 102) include front steps (94, 104) and back steps (98, 106) which allow the coupling ends to be connected in a temporary manner prior to connection in fluid tight relation.
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Chun Shackelford Heather
Parker Hannifin Corporation
Reese Randolph A.
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