Sexless coupling for fire hydrant-fire hose connection

Details Sexless coupling for fire hydrant-fire hose connection Sexless coupling for fire hydrant-fire hose connection

2006-10-31

2006-10-31

Rivell, John (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C137S512100, C285S073000, C285S148190

Reexamination Certificate

active

07128091

ABSTRACT:
A sexless coupling for coupling a fire hose to the externally threaded neck of a fire hydrant. The coupling comprises an internally threaded collar portion for threading onto the neck of the fire hydrant, the internally threaded collar portion having a flapper valve and an externally threaded portion. The coupling further comprises an external ring having an internal thread for threading the external ring onto the externally threaded portion of the collar. The external ring carries hooked lugs for forming a male connection and arcuate grooves for forming a female connection with a complementary coupling of a fire hose. In accordance with one embodiment of the invention, a flat neoprene rubber seal is disposed between facing surfaces on the internally threaded collar and external ring. In accordance with another embodiment of the invention, an annular ring of sealing material is disposed in a groove in the external ring and seals against the collar portion adjacent to the threads when the collar and external ring are assembled.

REFERENCES:
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patent: 6102450 (2000-08-01), Harcourt
patent: 6447027 (2002-09-01), Lilley et al.
patent: 6450542 (2002-09-01), McCue
patent: 6733045 (2004-05-01), Harrington et al.

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