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

• Current Assignee: Williams Trading BV Industrieweg
• Original Assignee: Williams Trading Company Incorporated
• Inventors: Ten Wolde, Anne W.
• Primary Examiner(s): Shaver, Kevin P.
• Application Number:
  US07/224,775
• Time in Patent Office: 1,013 Days
• Field of Search: 222/162, 222/183, 222/185, 222/181, 222/325, 222/383, 239/274
• US Class Current: 222/162
• CPC Class Codes: A61L 9/14 using sprayed or atomised substances including air-liquid contact processes
• CPC Class Codes: B05B 11/1052 Actuation means locking means therefor B05B11/1059; the dispensing stroke being affected by the stored energy of a spring B05B11/109

Abstract

Device for atomizing a liquid, such as for refreshing a toilet, which device is provided with a double-action pump. A replaceable container containing the liquid to be atomized is provided. The container contains a suction line, a nonreturn valve and a connecting nipple by means of which the container can be inserted in a connecting opening of the housing which is permanently mounted, for example on a door, and in which the pump and atomizer are situated.

Claims

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.

2. 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 wherein said container includes grooves and said backing plate includes ribs engaging with said grooves for positioning the container.