US3761022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A spring pressure accumulative spray device
Assignee: Individual
•
Filing: 1972-04-04
•
Granted: 1973-09-25
•
Expires: 1992-04-04
Abstract
Abstract This invention relates to a spray device for perfume, hairspray, insecticide etc., and more especially to a spring pressure accumulative spray device capable of gaining fine spray owing to its high pressure spraying. This spray device is capable of generating highly pressurized pressure accumulative liquid even when the spraying button is pushed by only slight finger force, while no internal pressure operates inside of the receptacle directly so that a pressure-proof receptacle is not necessary and any pressure drop due to a decrease in the amount of contained liquid or any leakage of the liquid while the device is not in use can be prevented. The construction is simple, and the device is a low cost pressure accumulative spray which can be discarded after use.
Inventors
- 👤 H Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:05
CPC Classifications
B; B05; B05B; B05B11/00; B05B11/01; B05B11/10; B05B11/1038; B05B11/1039; B05B11/1001
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
240 words
A spring pressure accumulative spray device comprising a main body adapted to be air tightly mounted on a receptable and a cap means for securing said main body to said receptacle; a first compression chamber located within said main body, a plunger means having a first end located at least partly within said first chamber and extending out of said first chamber through said cap means, a spraying button mounted on the second end of said plunger and having a nozzle therein, an orifice located in said plunger at a point remote from said second end and a bore hole within said plunger connecting said nozzle to said orifice, said plunger being mounted for recipricating movement within said first chamber and a first spring means normally urging said plunger out of said first chamber; said orifice communicating with said first chamber when said plunger is moved into its extreme innermost position within said first chamber; a second compression chamber located within said main body and connected to said first compression chamber, a piston means located in said second chamber and being adapted to closely contact the side walls of said second chamber, said piston being mounted so as to be movable within said second chamber independently of the movement of said plunger and second spring means urging said piston into said second chamber; and check-valve means for selectively permitting liquid in said receptacle to flow into one of said chambers.
Claim 2
Dependent Claim
240 words
A spring pressure accumulative spray device comprising a main body adapted to be air tightly mounted on a receptable and a cap means for securing said main body to said receptacle; a first compression chamber located within said main body, a plunger means having a first end located at least partly within said first chamber and extending out of said first chamber through said cap means, a spraying button mounted on the second end of said plunger and having a nozzle therein, an orifice located in said plunger at a point remote from said second end and a bore hole within said plunger connecting said nozzle to said orifice, said plunger being mounted for recipricating movement within said first chamber and a first spring means normally urging said plunger out of said first chamber; said orifice communicating with said first chamber when said plunger is moved into its extreme innermost position within said first chamber; a second compression chamber located within said main body and connected to said first compression chamber, a piston means located in said second chamber and being adapted to closely contact the side walls of said second chamber, said piston being mounted so as to be movable within said second chamber independently of the movement of said plunger and second spring means urging said piston into said second chamber; and check-valve means for selectively permitting liquid in said receptacle to flow into one of said chambers.
Claim 3
Dependent Claim
24 words
A spring pressure accumulative spray device as claimed in claim 1 wherein said piston has a larger diameter than the diameter of said plunger.
Claim 4
Dependent Claim
82 words
A spring pressure accumulative spray device as claimed in claim 1 wherein a flexible packing means is positioned around said plunger and between the uppermost part of said housing and said cap means, an air passage formed in said housing and adapted to communicate with the interior of said receptacle, means carried by said plunger for flexing said packing means when said plunger is in substantially its extreme innermost position, whereby said air passage is permitted to communicate with the ambient atmosphere.
Claim 5
Dependent Claim
88 words
A spring pressure accumulative spray device as claimed in claim 1 wherein said plunger carries spaced apart first and second pistons, each of said first and second pistons being adapted to contact the inner surface of said first chamber, said orifice being located between said first and second pistons, and a groove located in the inner wall of said first chamber, whereby said orifice is adapted to communicate through said groove with the compressed liquid in said first chamber when said plunger is moved into its innermost position.
Claim 6
Dependent Claim
62 words
A spring pressure accumulative spray device as claimed in claim 1 wherein said plunger carries a flexible means which normally obstructs the opening of said orifice and means located within said first chamber for temporarily moving said flexible means from said orifice when said plunger is moved into its innermost position, whereby said orifice is permitted to communicate with said first chamber.
Claim 7
Dependent Claim
37 words
A spring pressure accumulative spray device as claimed in claim 4 wherein means are provided for allowing the interior of said receptacle to communicate with the ambient atmosphere when said plunger is moved 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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |