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Device with replaceable container for atomizing liquid

  • US 5,016,781 A
  • Filed: 08/11/1988
  • Issued: 05/21/1991
  • Est. Priority Date: 10/21/1986
  • Status: Expired due to Fees
First Claim
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1. A device for emitting a finely divided stream of liquid into the atmosphere from a container, comprising:

  • a support to be rigidly attached to a movable element;

    a housing releasably received on said support;

    a pump housing in said housing having a recess and bore therein;

    a container in said housing for liquid to be dispensed;

    a nipple with a first non-return valve and suction tube at the top of the container, with the suction tube extending into the container, said nipple fitting into the recess of the pump housing;

    a pump piston inside the pump housing bore, said piston having a piston part extending outside the pump housing;

    a fixed abutment cooperating with said piston part such that upon engagement of said piston part with said abutment the piston performs a pressure stroke against the pressure of a spring and during movement away from the abutment performs a return or suction stroke;

    wherein said pump housing communicates with the pump piston on one side and with the first non-return valve and suction tube on the other side;

    a pressure channel with a second non-return valve leading to an atomizer, said pressure channel communicating with the pump housing;

    wherein the container, nipple with suction tube and first non-return valve form a replaceable unit, the pump housing recess is adapted to slidably and sealingly receive the nipple and wherein the pump housing forms a unit with the housing; and

    wherein said support is a backing plate including pins and said container includes cavities, with said pins projecting into said cavities to hold the container in the correct position.

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