US3705689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid spray apparatus
Assignee: CHEMAIR CORP OF AMERICA
•
Filing: 1970-10-27
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Granted: 1972-12-12
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Expires: 1990-10-27
Abstract
Abstract A liquid spray apparatus including a hermetically sealed container for retaining liquid connected to a source of pressurized air or other gas for propelling the liquid from an outlet in the container and a hand operated spray gun having a normally closed finger operated valve terminating in a spray nozzle. A flexible tube connecting the liquid outlet of the container to the liquid inlet of the valve. An auxiliary tube connecting the source of air or other gas to the liquid channel in the valve through a metering orifice for atomizing the liquid into spray from the nozzle when the valve is operated.
Inventors
- 👤 Arron Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:32
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/24; A; A61; A61M; A61M11/00; A61M11/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
112 words
In a liquid spray apparatus, a spray gun comprising a hollow handle, a mixing chamber secured in the handle, the chamber having a first inlet for pressurized gas and a second inlet for liquid under pressure simultaneously supplied thereto, a nozzle member mounted on the handle having an inlet connected to receive the mixture of pressurized gas and liquid from the chamber and an outlet for projecting an atomized spray therefrom, and manually controlled valve means normally forming a barrier to the flow of gas and liquid between the chamber and the inlet to the nozzle member and operable to establish communication between them for flow of such pressurized gas and liquid.
Claim 2
Dependent Claim
112 words
In a liquid spray apparatus, a spray gun comprising a hollow handle, a mixing chamber secured in the handle, the chamber having a first inlet for pressurized gas and a second inlet for liquid under pressure simultaneously supplied thereto, a nozzle member mounted on the handle having an inlet connected to receive the mixture of pressurized gas and liquid from the chamber and an outlet for projecting an atomized spray therefrom, and manually controlled valve means normally forming a barrier to the flow of gas and liquid between the chamber and the inlet to the nozzle member and operable to establish communication between them for flow of such pressurized gas and liquid.
Claim 3
Dependent Claim
29 words
In a liquid spray apparatus in accordance with claim 1 wherein the nozzle member is operatively connected to the valve means for manually operating it to establish said communication.
Claim 4
Dependent Claim
31 words
In a liquid spray apparatus according to claim 2 wherein the valve means is normally biased to provide a closed passageway between the inlet in the nozzle member and the chamber.
Claim 5
Dependent Claim
36 words
In a liquid spray apparatus according to claim 3 further including a check valve in the first inlet to prevent flow of liquid from the chamber thereinto but allow flow of pressurized gas into the chamber.
Claim 6
Dependent Claim
100 words
In a liquid spray apparatus according to claim 3 in which the valve means comprises a hollow tubular member open at one end and supported for movement through a wall of the mixing chamber, said tubular member having a closed end within the chamber, and a lateral opening through the wall thereof intermediate its ends, the tubular member being normally biased to locate the opening outwardly of the chamber and movable against said bias to locate the opening within the chamber upon operation of the nozzle means for flow of gas and liquid into the inlet of the nozzle member.
Claim 7
Dependent Claim
65 words
In a liquid spray apparatus according to claim 5 wherein the wall of the chamber through which the tubular member is movable is comprised of an elastomer having an opening tightly accommodating the tubular member, and stop means cooperating with the tubular member when biased to prevent flow, to stop it with the lateral opening therein against the wall of the opening in the elastomer.
Claim 8
Dependent Claim
48 words
In a liquid spray apparatus according to claim 6 in which the lateral opening in the tubular member is in a portion thereof of reduced cross-sectional dimension and sealed by the wall of the opening in the elastomer when the tubular member is stopped by the stop means.
Claim 9
Dependent Claim
36 words
In a liquid spray apparatus according to claim 7 further including a check valve in the first inlet to prevent flow of liquid from the chamber thereinto but allow flow of pressurized gas into the chamber.
Claim 10
Dependent Claim
95 words
In a liquid spray apparatus according to claim 3 including a container for the liquid having a sealed liquid outlet means in the upper end thereof and a dip tube extending from said outlet means into the container to the proximity of its bottom, and a sealed gas inlet means in the upper end thereof, means connecting the container inlet means to a source of pressured gas, means connecting the container outlet means to the second inlet of the chamber, and means connecting the first inlet of the chamber with the source of pressurized gas.
Claim 11
Dependent Claim
46 words
In a liquid spray apparatus according to claim 9 wherein the means connecting the first inlet of the chamber with the source of pressurized gas comprises a second sealed outlet means from the upper end of the container connected to the first inlet of the chamber.
Claim 12
Dependent Claim
40 words
In a liquid spray apparatus according to claim 9 further including a check valve in the first inlet of the chamber to prevent flow of liquid from the chamber thereinto but to allow flow of pressurized gas into the container.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |