IP Library › Granted Patent US 12,697,633
Granted Patent B2
US 12,697,633 · App. 18/860,754 · Granted Aug 4, 2026

Accumulator sprayer

Inventor: Mitsuaki Shazuki (Sanyo Onoda, JP)
Assignee: CANYON CORPORATION
B05B11/1022B05B11/1011B05B11/1057B05B11/1074
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Quick Facts
Patent No.
US 12,697,633
App. No.
18/860,754
Granted
Aug 4, 2026
Kind
B2
Abstract

An accumulator sprayer X comprises a cylinder body portion B having a main cylinder portion B 1 and a sub-cylinder portion B 2 , and a cover portion C attached to cover the cylinder body portion B. The accumulator sprayer is attached to a container J to suck up liquid in container J to the main cylinder portion via a first valve FV, apply pressure to the liquid in the main cylinder portion, and spray the liquid from a nozzle portion F via a valve structure A when the pressure exceeds a certain pressure, and the valve structure is mounted between a lower support portion B 23 of the sub-cylinder portion and an upper support portion C 1 of the cover portion, and a length L 1 of the valve structure in unloaded state and a shortest distance L 2 between the lower support portion and the upper support portion satisfy the relational expression L 1 <L 2.

Claims (9)

1 . An accumulator sprayer comprising a cylinder body portion having a main cylinder portion and a sub-cylinder portion, and a cover portion attached to cover the cylinder body portion, wherein

the accumulator sprayer is attached to a container to suck up liquid in the container to the main cylinder portion via a first valve, apply pressure to the liquid in the main cylinder portion, and spray the liquid from a nozzle portion via a valve structure when a pressure exceeds a certain pressure, and

the valve structure is mounted between a lower support portion of the sub-cylinder portion and an upper support portion of the cover portion, and

a length L 1 of the valve structure in unloaded state and a shortest distance L 2 between the lower support portion and the upper support portion satisfy the relational expression L 1 <L 2 ,

wherein the valve structure is composed of a reverse-dome-shaped spring portion and a valve piston portion hanging down from the spring portion, and

the valve piston portion is composed of a core rod portion, an outer skirt portion extending downward from the outer circumference of the core rod portion, and an inner skirt portion longer than the outer skirt portion.

2 . The accumulator sprayer according to claim 1 , wherein the core rod portion is formed cylindrically between the spring portion and the outer skirt portion.

3 . The accumulator sprayer according to claim 1 , wherein a tubular protrusion is formed in the center of the spring portion.

4 . The accumulator sprayer according to claim 1 , wherein a center hole whose top is open is formed in the valve piston portion.