# US 11,077,455 B2 · Trigger-type liquid sprayer

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- Number: US 11,077,455 B2
- Document ID: US11077455B2
- Status: Granted
- Kind: B2
- Application number: 16/758,380
- Filed: 2018-08-21
- Published: 2020-10-29
- Granted: 2021-08-03
- Earliest claimed: 2017-10-31
- Assignees: Yoshino Kogyosho Co., Ltd.
- Applicants: Yoshino Kogyosho Co., Ltd.
- Inventors: Kotaro Fujiwara; Kazuhisa Yoshimura
- Web page: https://patentgrep.com/patent/US11077455B2

## CPC

- B05B 11/1009: {actuated by a lever}
- B05B 11/1077: {characterised by a particular shape or material (B05B11/1076 takes precedence)}
- B05B 1/12: capable of producing different kinds of discharge, e.g. either jet or spray (having selectively-effective outlets B05B1/16)
- B05B 7/02: Spray pistols; Apparatus for discharge (for spraying particulate material B05B7/14; with means for heating the material to be sprayed B05B7/16; with means for supplying fluent material to a discharge device B05B7/24)
- B05B 11/1074: {located outside pump chambers}
- B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D)

## Abstract

A trigger-type liquid sprayer in which a spring member urging an operation lever is less likely to be fatigued. A trigger-type liquid sprayer includes a sprayer main body attached to a container, an operation lever held to be swingable in a front-back direction with respect to the sprayer main body, and a spring member urging the operation lever forward. The spring member includes a fixed part that is located in front of a swing center of the operation lever and is fixed and held to the sprayer main body, and a projection that is located below the fixed part. The operation lever includes an inclined surface that is inclined upward from downward and frontward from backward and is urged by the projection abutting against the inclined surface.

## Claims

### Claim 1

A trigger-type liquid sprayer comprising: a sprayer main body attached to a container; an operation lever held to be swingable in a front-back direction with respect to the sprayer main body; and a spring member urging the operation lever forward, the trigger-type liquid sprayer sucking, pressurizing, and pumping a content liquid stored in the container to spray the content liquid to outside by swinging the operation lever in the front-back direction so as to actuate a pump provided in the sprayer main body, wherein
the spring member includes a fixed part that is located in front of a swing center of the operation lever and is fixed and held to the sprayer main body, and a projection that is located below the fixed part,
the operation lever includes an inclined surface that is inclined upward from downward and frontward from backward and is urged by the projection abutting against the inclined surface, and
the inclined surface is a curved inclined surface that is curved in a direction away from the projection.