Hose coupling for a faucet

Claim 1

A hose coupling for use with a faucet, said hose coupling comprising: a main casing having a first threaded portion on the outer surface at the top thereof, said main casing having a cavity in the center thereof and there being an opening extending from the top portion of said casing through said cavity and to the bottom for defining a fluid passage therethrough; valve means and valve seat means located in said cavity for closing off said opening; a cap nut screwed on said threaded portion of said main casing, packing means interposed between said cap nut and said main casing, both said cap nut and said packing means having a hole in the center thereof for communicating with said opening through said main casing; a hollow cylindrical extension connected to and extending downward from said cavity and communicating therewith through said valve seat; a tubular lower body slidably received on said hollow cylindrical extension, said lower body having valve closing means for keeping said valve means open when fluid pressure in the hose is normal and closing when fluid pressure abnormally increases; a first sleeve concentrically attached to said casing at the lower end thereof, said first sleeve having a flange extending therefrom; spring means in contact with said lower body and with said flange for urging said casing and lower body together and for having said valve closing means maintain said valve means open during normal fluid pressure conditions; pressure sensing means connected to said casing and said lower body, said pressure sensing means comprising a bellows attached outside said first sleeve to said casing and and to said lower body, an opening in the side wall of said tubular lower body, said opening being in a portion of said lower body which extends within said bellows, for allowing fluid pressure to act on said bellows wherein, when fluid pressure increases abnormally, said bellows expands to overcome the spring force of said spring means for causing said casing and said lower body to separate for causing said valve closing means to close said valve means; and hose clamping means located at the lower end of said tubular lower body for connecting a hose thereto.