US3865313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure accumulative sprayer device
Assignee: Individual
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Filing: 1974-02-07
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Granted: 1975-02-11
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Expires: 1994-02-07
Abstract
Abstract A sprayer device for use in spraying perfume, hair-spray, insecticide, etc., and more particularly a pressure accumulative sprayer device in which spring pressure and finger pressure are combined so as to enable to keep the pressure constant therein for spraying a fine mist therefrom. In this sprayer device, finger pressure is further applied to a spray liquid cumulatively compressed by spring pressure so as to replenish a loss of pressure during the spray thereby enabling to maintain the generation of a highly compressed and uniform spray from the beginning to the last independently of the manner of pressing the spray button. This pressure accumulative sprayer device, available in a simple construction and producible at a minor cost, also enables to apply a predominant spraying force to contained liquid by means of accumulating the pressure therein.
Inventors
- 👤 Hiroshi Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:21
CPC Classifications
B; B05; B05B; B05B11/00; B05B11/01; B05B11/10; B05B11/1038; B05B11/1039; B05B11/1001
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
256 words
A pressure accumulative sprayer device comprising in combination a valve casing provided with a cylinder chamber and a compression chamber having a shoulder portion in the lower part thereof, said valve casing being so fabricated as to be airtightly mounted on a container; a cap engageable with the valve casing and the container; a plunger the lower end of which is inserted into the valve casing through the cap, the upper end of said plunger being provided with a spray button having a nozzle, the portion of said plunger inserted into the valve casing being provided with a spring receiving seat, and an orifice in a position below said spring receiving seat, and moreover a communication hole thereinside for connecting the nozzle and the orifice with each other; a piston so fitted as to be airtightly slidable between the outer periphery of the plunger and the inner periphery of the cylinder chamber of the valve casing; springs compressively provided between the piston and the spring receiving seat for urging said piston and the plunger; a check valve for checking a counter-current of the liquid within the valve casing but permitting said liquid to travel in one direction; a movable valve slidably fitted to the plunger so as to close the orifice, said valve opening the orifice by permitting the descent of the plunger beyond its lower limit even after its abutment on the shoulder portion of the compression chamber thereby enabling to obtain a spray when the orifice communicates with the interior of the valve casing.
Claim 2
Dependent Claim
256 words
A pressure accumulative sprayer device comprising in combination a valve casing provided with a cylinder chamber and a compression chamber having a shoulder portion in the lower part thereof, said valve casing being so fabricated as to be airtightly mounted on a container; a cap engageable with the valve casing and the container; a plunger the lower end of which is inserted into the valve casing through the cap, the upper end of said plunger being provided with a spray button having a nozzle, the portion of said plunger inserted into the valve casing being provided with a spring receiving seat, and an orifice in a position below said spring receiving seat, and moreover a communication hole thereinside for connecting the nozzle and the orifice with each other; a piston so fitted as to be airtightly slidable between the outer periphery of the plunger and the inner periphery of the cylinder chamber of the valve casing; springs compressively provided between the piston and the spring receiving seat for urging said piston and the plunger; a check valve for checking a counter-current of the liquid within the valve casing but permitting said liquid to travel in one direction; a movable valve slidably fitted to the plunger so as to close the orifice, said valve opening the orifice by permitting the descent of the plunger beyond its lower limit even after its abutment on the shoulder portion of the compression chamber thereby enabling to obtain a spray when the orifice communicates with the interior of the valve casing.
Claim 3
Dependent Claim
31 words
A pressure accumulative sprayer device as defined in claim 1 wherein an additional spring is incorporated so as to additionally urge the spring thereby enabling to obtain high internal pressure therein.
Claim 4
Dependent Claim
23 words
A pressure accumulative sprayer device as defined in claim 1 wherein a notch is provided in the shoulder portion of the compression chamber.
Claim 5
Dependent Claim
34 words
A pressure accumulative sprayer device as defined in claim 1 comprising a means for enabling the interior of the container to communicate with the ambient atmosphere when the plunger moves from its outermost position.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |