Precompression valve for trigger sprayer

  • US 5,467,900 A
  • Filed: 03/16/1994
  • Issued: 11/21/1995
  • Est. Priority Date: 03/16/1994
  • Status: Expired due to Term
First Claim
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1. A trigger sprayer comprising:

  • a body having a cylinder therein;

    liquid inlet means in communication with said cylinder;

    an outlet waterway in communication with said cylinder;

    outlet nozzle means including a nozzle which has an outlet orifice and which is movable to and from a position in communication with said waterway;

    a piston having an inner end and an outer end and being received in said cylinder;

    a trigger operatively coupled to said body and acting on said outer end of said piston;

    precompression valve means in a fluid path between said piston and said outlet orifice;

    said precompression valve means being operable to allow liquid in a first part of said fluid path to reach said outlet orifice only after a predetermined pressure is established in said cylinder and to stop liquid from reaching said outlet orifice when the pressure in said cylinder falls below said predetermined pressure;

    said precompression valve means comprising a valve body in said fluid path and having passage means, including a space, communicating between said piston and said outlet orifice, and comprising a spring valve element in said space whereby, when pressure is built up in said passage means upon movement of said piston into said cylinder, said spring valve element is caused to flex allowing liquid under pressure to escape past said spring valve element into a second part of said fluid path and out said outlet orifice in said nozzle; and

    ,biasing means for biasing said piston away from said precompression valve means.

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