US3796376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray gun
Assignee: SICMO SA 3 RUE DE L'RUE DE L'INDUSTRIE MC 98000 MONACO A CORP OF MONACO
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Filing: 1972-08-07
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Granted: 1974-03-12
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Expires: 1992-08-07
Abstract
Abstract A spray gun with a hollow handle has a trigger that opens a valve in the handle to admit compressed air. Lateral openings adjacent the handle feed secondary air by the venturi effect. The trigger also retracts a plunger in the spray head that controls liquid flow, with the valve opening slightly before the plunger. The spray head includes a sleeve with converging orifices for compressed air, and this sleeve is movable axially relative to the plunger to control the spray pattern.
Inventors
- 👤 Irmgard Farnsteiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:22
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/0081; B05B7/0087; B05B7/02; B05B7/04; B05B7/0416; B05B7/0441; B05B7/0475; B05B7/08; B05B7/0807; B05B7/0815; B05B7/12; B05B7/1209; B05B7/24; B05B7/2402; B05B7/2405; B05B7/2435
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
67 words
A spray gun having a handle having a passageway therethrough for compressed air, said passageway having the shape of a venturi comprising a converging cone and a diverging cone, and means upstream of said venturi with respect to the direction of compressed air flow therethrough for admitting to said venturi secondary air from the adjacent atmosphere by the action of the compressed air passing through the venturi.
Claim 2
Dependent Claim
67 words
A spray gun having a handle having a passageway therethrough for compressed air, said passageway having the shape of a venturi comprising a converging cone and a diverging cone, and means upstream of said venturi with respect to the direction of compressed air flow therethrough for admitting to said venturi secondary air from the adjacent atmosphere by the action of the compressed air passing through the venturi.
Claim 3
Dependent Claim
67 words
A spray gun as claimed in claim 1, and a valve member in the handle to close the handle to the passage of compressed air therethrough, a rod extending through the venturi to operate said valve member, spring means urging the rod in a direction to close the valve member, and a manually operable trigger to move the rod in a direction to open the valve member.
Claim 4
Dependent Claim
17 words
A spray gun as claimed in claim 1, in which said venturi extends lengthwise of said handle.
Claim 5
Dependent Claim
78 words
A spray gun as claimed in claim 1, having means to supply liquid thereto having a liquid inlet and a liquid outlet, a spray head comprising a sleeve, said sleeve defining with said liquid outlet an annular converging conical air passageway for air to atomize said liquid, and means mounting said sleeve for axial movement relative to said liquid outlet to regulate the degree of pulverization and the amount of liquid that leaves the gun through said outlet.
Claim 6
Dependent Claim
122 words
A spray gun having a hollow handle, means to supply to the gun liquid to be sprayed, means to supply compressed air to the gun through the hollow handle to entrain and atomize liquid to be sprayed, venturi means in the handle to entrain secondary air from the adjacent atmosphere by the action of the compressed air passing through the hollow handle, a valve member in the hollow handle to close the handle to the passage of compressed air therethrough, a rod extending through the hollow handle to operate said valve member, spring means urging the rod in a direction to close the valve member, and a manually operable trigger to move the rod in a direction to opEn the valve member.
Claim 7
Dependent Claim
122 words
A spray gun having a hollow handle, means to supply to the gun liquid to be sprayed, means to supply compressed air to the gun through the hollow handle to entrain and atomize liquid to be sprayed, venturi means in the handle to entrain secondary air from the adjacent atmosphere by the action of the compressed air passing through the hollow handle, a valve member in the hollow handle to close the handle to the passage of compressed air therethrough, a rod extending through the hollow handle to operate said valve member, spring means urging the rod in a direction to close the valve member, and a manually operable trigger to move the rod in a direction to opEn the valve member.
References Cited (Backward Citations)
US1626096A
Cited
US2899138A
Cited
US1797209A
Cited
US1950779A
Cited
US2544123A
Cited
US2557593A
Cited
US2670239A
Cited
US2888207A
Cited
FR1577333A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |