# US 2023/0058932 A1 · New all-plastic miniaturized spray gun > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0058932 A1 - Document ID: US20230058932A1 - Status: Published application - Kind: A1 - Application number: 17/733,259 - Filed: 2022-04-29 - Published: 2023-02-23 - Earliest claimed: 2021-08-19 - Assignees: Yuyao Aohong Plastics Co., Ltd - Applicants: Yuyao Aohong Plastics Co., Ltd - Inventors: Honghu HUANG - Web page: https://patentgrep.com/patent/US20230058932A1 ## CPC - B05B 11/1009: {actuated by a lever} - B05B 11/1011: {without substantial movement of the nozzle in the direction of the pressure stroke} - B05B 11/1074: {located outside pump chambers} - B05B 11/0008: {Sealing or attachment arrangements between sprayer and container (between pump and container B05B11/1043)} - B05B 11/007: {being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill valves} - B05B 11/1045: {the pump being preassembled as an independent unit before being mounted on the container (B05B11/1047, B05B11/1049 take precedence)} - B05B 11/1069: {the valve being made of a resiliently deformable material or being urged in a closed position by a spring} - B05B 11/1077: {characterised by a particular shape or material (B05B11/1076 takes precedence)} - Y02A 40/22: Improving land use; Improving water use or availability; Controlling erosion - 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) - Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE ## Abstract A new all-plastic micro miniaturized spray gun. Inner hole of miniaturized spray gun piston bush includes lower elastic sleeve; upper and lower ends of piston cavity in inlet hole of body include upper and lower thru-hole; upper elastic sleeve disposed above inner hole of piston bush in inlet hole on body between upper and lower thru-hole; upper elastic sleeve abutted against piston bush and fixed in inlet hole of body; diversion groove is disposed on inner walls of inlet hole on body; which is tapered and corresponds to upper elastic sleeve; which includes piston and cover; lower thru-hole of body is normally open; when upper thru-hole of body drives piston to move inwardly through wrench, lower elastic sleeve is stressed subject to pressure change, controlling opening or closure of inlet hole on body, and upper elastic sleeve is deformed subject to pressure change, opening or closing upper thru-hole of body. ## Claims ### Claim 1 A new all-plastic miniaturized spray gun, the body and the inner passage of the miniaturized spray gun are L-shaped, a cover is disposed on the outer diameter of the body, a piston bush is disposed in the inner ring groove at the inlet of the body, a suction pipe is provided in the inner hole of the piston bush, a large ring is provided on the outer diameter of the inlet hole of the body outward of the piston bush, a piston cavity is disposed in the piston cylinder on one side of the wrench of the body, a piston is disposed in the piston cavity of the body, the piston on one end of the piston is fit into the piston cavity of the body, the sealing blade on the outer diameter of piston is abutted against the inner diameter of the piston cavity of the body, the other end of the piston is fit and abutted against the wrench, one end of the wrench is fixed to the pins on the outer diameter on both sides of the outlet hole of the body, a plastic spring is disposed on the outer diameter of the piston cavity of the body, the plastic spring appears to be arch-bent, one end of the plastic spring is abutted against the outer diameter of the inlet hole of the body, the other end of the plastic spring is abutted against the stop rib or wrench on the outer diameter of the outlet hole of the body, a head cap is disposed in the outlet hole of the body; wherein the inner hole of the piston bush is provided with a lower elastic sleeve; the upper and lower ends of the piston cavity in the inlet hole of the body are respectively provided with an upper thru-hole and a lower thru-hole; an upper elastic sleeve is disposed above the inner hole of the piston bush in the inlet hole on body between the upper thru-hole and the lower thru-hole; the upper elastic sleeve is abutted against the piston bush and fixed in the inlet hole of the body; a diversion groove is disposed on the inner walls of the inlet hole on body; the lower thru-hole of the body is normally open; when the upper thru-hole of the body drives the piston to move inwardly through a wrench, the lower elastic sleeve is stressed subject to pressure change, thus controlling the opening or closure of the inlet hole on body, and the upper elastic sleeve is deformed subject to pressure change, thus opening or closing the upper thru-hole of the body. ### Claim 2 (depends on 1) A new all-plastic miniaturized spray gun according to claim 1, wherein the water inlet of the body is appears to be tapered and its corresponding upper elastic sleeve appears to be tapered. ### Claim 3 (depends on 1) A new all-plastic miniaturized spray gun according to claim 1, wherein the upper elastic sleeve comprises a piston and a cover, the cover mouth at one end of the cover bottom is hermetically fit to the column at one end of the piston, the cover mouth is joined to the head section at the other end of the piston, the diameter of the cylindrical end is larger than that of the cylinder at the other end of the cover, the height of the piston column is smaller than that of the cover, a column cavity is provided inside the spring, and the cover is located at the upper thru-hole of the body. ### Claim 4 (depends on 3) A new all-plastic miniaturized spray gun according to claim 3, wherein the said-protruded cross rib is disposed at the bottom of the piston of the lower elastic sleeve, the lower elastic sleeve is replaced by a plastic part. The plastic part in the top inner hole of the piston bush floats up and down in the clearance at the bottom of the cross rib. ### Claim 5 (depends on 1) A new all-plastic miniaturized spray gun according to claim 1, wherein the upper elastic sleeve comprises a seat and a hood. The seat and hood are sleeved as one piece and appear to be tapered, the center hole in the seat is connected with the inner cover cavity of the hood, and the hood is located in the upper thru-hole of the body. ### Claim 6 (depends on 1) A new all-plastic miniaturized spray gun according to claim 1, wherein the protruded ring is provided between the upper thru-hole and the lower thru-hole in the piston cavity of the body. The ring corresponds to a flared ring groove at the bottom of the piston part; a conical inner cavity is provided in the flared ring groove at one end of the piston part in the piston cavity of the body. ### Claim 7 (depends on 1) A new all-plastic miniaturized spray gun according to claim 1, wherein the ball joint is disposed at one end of the wrench of the piston part, the piston part is kinetically fit and fixed by the inner ball groove disposed between the ball joint and the wrench, a triangular reinforcing rib is disposed on the outer diameter of the ball joint rod of the ball joint, equally spaced rib grooves are disposed on the outer diameter between the lower part of the reinforcing rib and the piston blade, and the piston blade and the hole mouth of the piston part form a double-layer seal. ### Claim 8 (depends on 1) A new all-plastic miniaturized spray gun according to claim 1, wherein the hook catching groove protruding toward one side of the wrench is disposed on one end of the plastic spring. The plastic spring is fit and fixed to the connecting rib on the outer diameter of the body by the hook catching groove, and the end grooves on both sides of the rear part of the hook catching groove are abutted and fit to the trapezoidal rib of the body. The trapezoidal rib of the body is disposed on both sides of the ring face on the top outer diameter of the inner ring at the inlet hole. The trapezoidal rib is an inverted rib that is smaller at the bottom and larger on the top. One end of the wrench of the plastic spring is symmetrically provided with an open-ended clasp. The plastic spring is abutted against the stop rib or wrench on the outer diameter of the outlet hole of the body by clasp. ### Claim 9 (depends on 1) A new all-plastic miniaturized spray gun according to claim 1, wherein the notch is provided on one side of the top hole mouth of the inner hole of the piston bush, and the notch is aligned with the lower thru-hole in the body. ### Claim 10 (depends on 1) A new all-plastic miniaturized spray gun according to claim 1, wherein the protruded seal ring is disposed on the outer diameter of the piston bush, an air hole is provided on one side of the tabletop above the seal ring, and an inner hole is provided on the other side of it; the. inner hole protrudes upwards and downwards respectively; a protruded catching ring is disposed along the top edge of the tabletop, the piston bush is fixed onto the ring groove at the inlet hole of the body by catching ring, and the air hole of the piston bush is located in the cavity groove underneath the connecting rib of the body.