US4082222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Atomized liquid dispensing pump
Assignee: Individual
•
Filing: 1976-07-23
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Granted: 1978-04-04
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Expires: 1996-07-23
Abstract
Abstract An atomizer assembly comprises a nozzle mounted in a push-button mounted on a tubular extension to a first piston of the assembly. The first piston is slidable in a first cylinder or pump chamber and defines a seat of a valve. A valve member co-operating with the seat forms part of a second piston slidable in a second cylinder defined by the first piston. Depression of the push-button causes pressure in the pump chamber to increase and at a certain point the valve member is lifted from the seat so that liquid under pressure passes to the nozzle.
Inventors
- 👤 Michel Boris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:41
CPC Classifications
B; B05; B05B; B05B11/00; B05B11/0005; B05B11/0062; B05B11/0064; B05B11/01; B05B11/10; B05B11/1001; B05B11/1097
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
199 words
In an atomizer: (a) means defining a first cylinder forming a pump chamber; (b) a dip tube in communication with the pump chamber; (c) a hollow first piston slidable within the pump chamber, said hollow piston defining a second cylinder in communication with the pump chamber and defining a valve seat; (d) a second piston slidable in said second cylinder and defining a valve member; (e) an atomizing nozzle in open communication with the said second cylinder through a bore in said second piston said atomizing nozzle being in open communication with said second cylinder only when the valve member and the valve seat are spaced apart; (f) first resilient means biasing the first piston towards one end of said pump body and second resilient means biasing the second piston towards the other end of said pump body and urging said valve member against said valve seat; and (g) pressure applied to said first piston causing pressure to build up in said pump chamber until the biasing force of said second resilient means is overcome and the valve member and valve seat become spaced apart thus establishing said open communication between the atomizing nozzle and the said second cylinder.
Claim 2
Dependent Claim
199 words
In an atomizer: (a) means defining a first cylinder forming a pump chamber; (b) a dip tube in communication with the pump chamber; (c) a hollow first piston slidable within the pump chamber, said hollow piston defining a second cylinder in communication with the pump chamber and defining a valve seat; (d) a second piston slidable in said second cylinder and defining a valve member; (e) an atomizing nozzle in open communication with the said second cylinder through a bore in said second piston said atomizing nozzle being in open communication with said second cylinder only when the valve member and the valve seat are spaced apart; (f) first resilient means biasing the first piston towards one end of said pump body and second resilient means biasing the second piston towards the other end of said pump body and urging said valve member against said valve seat; and (g) pressure applied to said first piston causing pressure to build up in said pump chamber until the biasing force of said second resilient means is overcome and the valve member and valve seat become spaced apart thus establishing said open communication between the atomizing nozzle and the said second cylinder.
Claim 3
Dependent Claim
32 words
An atomizer according to claim 1 further including a hollow extension to the second piston and a tubular extension to the first piston, said hollow extension being slidable in said tubular extension.
Claim 4
Dependent Claim
31 words
An atomizer according to claim 2 comprising a member carrying the said atomizing nozzle, said hollow extension being slidable in said member and said member being rigid with said tubular extension.
Claim 5
Dependent Claim
14 words
An atomizer according to claim 1, wherein the valve member has an axial passage.
Claim 6
Dependent Claim
21 words
An atomizer according to claim 1, wherein the valve seat has passages in its periphery providing communication between the two cylinders.
Claim 7
Dependent Claim
33 words
An atomizer according to claim 1 wherein the valve member and the valve seat thereof have complementary frusto-conical surfaces and the seat has an annular bleed passage outwardly of the frusto-conical surface thereof.
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) | 1981-04-03 | 1981-10-03 | 1982-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-04-03 | 1985-10-03 | 1986-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-04-03 | 1989-10-03 | 1990-04-04 | $7700.00 | Window Closed / Lapsed |