US3685736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spraying device
Assignee: Bethlehem Steel Corp
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Filing: 1970-12-16
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Granted: 1972-08-22
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Expires: 1990-12-16
Abstract
Abstract An improved air spraying device for spraying a liquid having self cleaning means including a stem adapted to move into and out of the spray outlet without interrupting the continuous flow of air and liquid, the stem being normally biased out of said outlet.
Inventors
- 👤 Fredrick Henry Diegelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:09
CPC Classifications
B; B05; B05B; B05B15/00; B05B15/50; B05B15/52; B05B15/522; B05B15/5223; B05B15/5225
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
140 words
In a spraying device comprising a body member, a first chamber in said body member having a continually open first outlet for spraying material, a second chamber in said body member having a second outlet for air adjacent said first outlet, the improvement comprising: a. a third chamber in said body member aligned with and spaced from said first outlet, b. a stem slidably mounted in said body member having one end extending within said third chamber and the other end extending within said first chamber, said other end shaped to pass through said first outlet, c. first means in said third chamber to move said other end of said stem through said first outlet, and d. second means in said third chamber to normally bias said other end of said stem to a position removed from said first outlet.
Claim 2
Dependent Claim
140 words
In a spraying device comprising a body member, a first chamber in said body member having a continually open first outlet for spraying material, a second chamber in said body member having a second outlet for air adjacent said first outlet, the improvement comprising: a. a third chamber in said body member aligned with and spaced from said first outlet, b. a stem slidably mounted in said body member having one end extending within said third chamber and the other end extending within said first chamber, said other end shaped to pass through said first outlet, c. first means in said third chamber to move said other end of said stem through said first outlet, and d. second means in said third chamber to normally bias said other end of said stem to a position removed from said first outlet.
Claim 3
Dependent Claim
23 words
The device according to claim 1 wherein the means of subparagraph (d) is a spring loaded piston slidably mounted in said third chamber.
Claim 4
Dependent Claim
159 words
A spraying device comprising: a. a body member, b. a first chamber including an open passageway through said body member and terminating in a first outlet, c. a second chamber including an open passageway through said body member and terminating in a plurality of second outlets adjacent said first outlet, d. a third chamber in said body member, e. a stem slidably mounted in said body member having one end extending within said third chamber, an intermediate portion extending within said second chamber and the other end extending within said first chamber, said other end shaped to pass through said first outlet, f. a piston slidably mounted in said third chamber and attached to said one end of said stem, g. means to normally bias said other end of said stem to a position removed from said first outlet and to move said piston within said third chamber and said other end of said stem through said first outlet.
Claim 5
Dependent Claim
159 words
A spraying device comprising: a. a body member, b. a first chamber including an open passageway through said body member and terminating in a first outlet, c. a second chamber including an open passageway through said body member and terminating in a plurality of second outlets adjacent said first outlet, d. a third chamber in said body member, e. a stem slidably mounted in said body member having one end extending within said third chamber, an intermediate portion extending within said second chamber and the other end extending within said first chamber, said other end shaped to pass through said first outlet, f. a piston slidably mounted in said third chamber and attached to said one end of said stem, g. means to normally bias said other end of said stem to a position removed from said first outlet and to move said piston within said third chamber and said other end of said stem through said first outlet.
Claim 6
Dependent Claim
51 words
The device of claim 3 wherein the means of subparagraph (g) includes i. a spring in contact with one side of said piston and an end wall of said third chamber, and ii. an inlet to said chamber to supply a fluid under pressure to the other side of said piston.
References Cited (Backward Citations)
US2173072A
Cited
US2384679A
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US2623782A
Cited
US3198435A
Cited
US3332623A
Cited
US3341124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |