Robert J Francisco

US Patent:

47007320, Oct 20, 1987

Filed:

Sep 4, 1986

Appl. No.:

6/903699

Inventors:

Robert D. Francisco - Oklahoma City OK

International Classification:

F16K 2402

US Classification:

137107

Abstract:

An improved faucet drain assembly for preventing damage to a faucet due to freezing of residual water in the faucet upon exposure of the faucet to low temperature conditions. The faucet drain assembly comprises a faucet extension member supported by the faucet, the faucet extension member having a drain bore extending therethrough which is in fluid communication with the faucet, and a fluid valving assembly disposed in the drain bore and responsive to the flow pressure through the faucet. When the flow pressure in the faucet drops below a predetermined value, that is, the flow pressure of water through the faucet approaches the value where substantially no water pressure is present, the fluid valving assembly opens the drain bore so that the residual water in the faucet can be removed therethrough; whereas when the flow pressure in the faucet is above the predetermined value, that is, there is a stream of the water flowing through the faucet, the fluid valving assembly seals the drain bore to prevent discharge of water therethrough.