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Slow closing faucet

  • US 4,241,759 A
  • Filed: 08/28/1978
  • Issued: 12/30/1980
  • Est. Priority Date: 08/28/1978
  • Status: Expired due to Term
First Claim
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1. In a slow closing faucet, a hollow casing with a pair of inlets and an outlet therein, a cartridge core having a plurality of inlets and outlets insertable and positioned in the casing, said casing inlets in communication with said core inlets and said core outlets in communication with said casing outlet, a bonnet on the top of the casing holding the core in position in the casing, an operating stem extending through the bonnet into the core and an operating knob attached to the top of the stem for manual manipulation, a cover on the top of the core having an opening through which the operating stem extends, means to hold the operating stem in the core, an inner ledge formed inside the core, a restoring spring positioned between the stem holding means and the inner ledge to normally bias the operating stem towards the cover, a sealing member around the operating stem and resting against the top of the inner ledge with the operating stem extending therethrough, a piston slidably mounted in the core below the inner ledge, a valve stem in the core below the piston and having its upper end in engagement with the underside of the piston, a second spring in the core normally biasing the piston and valve stem upwardly so that the upper end of the piston will be against the bottom of the inner ledge and in engagement with the bottom end of the operating stem, a valve below the piston and operatively related to the lower end of the valve stem for controlling the flow of water between the core inlets and outlets, sealing means around the piston, and a restricted bypass between the sealing means and the piston such that upon manual operation of the knob causing depression of the operating stem, the piston and the valve stem are moved downwardly thereby opening the valve, said sealing means being movable in a chamber formed between said core, said piston and said bottom of said inner ledge to allow unrestricted flow into said chamber, release of said knob allowing said piston to move upwardly, said seal means movable in said chamber to restrict flow out of said chamber only through said restricted bypass, to allow slow closing movement of said faucet.

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