Breakaway coupling with flapper valve

Details Breakaway coupling with flapper valve Breakaway coupling with flapper valve

2005-01-11

2005-01-11

Lee, Kevin (Department: 3753)

Fluid handling

Systems

Flow path with serial valves and/or closures

C137S068140, C251S149200

Reexamination Certificate

active

06840277

ABSTRACT:
A breakaway coupler for coupling upstream and downstream hose includes one or more locking balls carried by a downstream coupling member. An upstream flapper is pivotally secured with respect to an upstream housing. A pushrod is axially movable in response to engagement by the downstream coupling member. A pry recess on the downstream coupling member is spaced between the downstream housing g and the upstream housing, such that a tool inserted into the pry recess is leverageable to move the downstream coupling member to unlock the breakaway coupler.

REFERENCES:
patent: 4007909 (1977-02-01), Buseth et al.
patent: 4090524 (1978-05-01), Allread et al.
patent: 4289295 (1981-09-01), Allread
patent: 4328822 (1982-05-01), Wilhelm
patent: 5228474 (1993-07-01), Nimberger
patent: 5320133 (1994-06-01), Nimberger
patent: 5419354 (1995-05-01), Krynicki
patent: 5699822 (1997-12-01), Bodhaine
patent: 5826610 (1998-10-01), Bodhaine
patent: 5947142 (1999-09-01), Nimberger et al.
patent: 6722405 (2004-04-01), Cessac et al.

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