US3923252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spraying apparatus
Assignee: AUTOMATION DEV AND ENGINEERING
•
Filing: 1974-12-09
•
Granted: 1975-12-02
•
Expires: 1994-12-09
Abstract
Abstract The needle valve in a spray head is guided by a plurality of bushings spaced apart by a plurality of packing washers for precise alignment with the associated valve seat, and the needle has a conical front end which prevents liquid from collecting thereon.
Inventors
- 👤 Sr Walter B Warning
- 👤 Jr Walter B Warning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:32
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/02; B05B7/12; B05B7/1254; B05B7/1263; B05B7/1272; B05B1/00; B05B1/30; B05B1/3033; B05B1/304; B05B1/3046; B05B1/306
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
180 words
Apparatus for atomizing and spraying a liquid, comprising a body member having a bore therein, a tubular tip member mounted in one end of said bore and having a forewardly disposed liquid orifice defined by a conical valve seat, a needle valve having a frusto-conical valve portion reciprocably mounted in said bore for movement of said valve portion into and out of sealing engagement with said valve seat, spring means mounted in said bore urging said needle valve into sealing engagement with said valve seat, fluid operated means mounted in said bore for moving said needle out of sealing engagement with said valve seat, a plurality of sealing gaskets interposed between an intermediate portion of said needle and said bore for preventing fluid from traVeling across said intermediate portion of said needle, a plurality of bushings slidably disposed on said needle and spaced apart by a plurality of said gaskets for guiding said needle for movement along the central longitudinal axis of said valve seat, and passageway means for supplying said liquid to said bore forwardly of said sealing gaskets.
Claim 2
Dependent Claim
180 words
Apparatus for atomizing and spraying a liquid, comprising a body member having a bore therein, a tubular tip member mounted in one end of said bore and having a forewardly disposed liquid orifice defined by a conical valve seat, a needle valve having a frusto-conical valve portion reciprocably mounted in said bore for movement of said valve portion into and out of sealing engagement with said valve seat, spring means mounted in said bore urging said needle valve into sealing engagement with said valve seat, fluid operated means mounted in said bore for moving said needle out of sealing engagement with said valve seat, a plurality of sealing gaskets interposed between an intermediate portion of said needle and said bore for preventing fluid from traVeling across said intermediate portion of said needle, a plurality of bushings slidably disposed on said needle and spaced apart by a plurality of said gaskets for guiding said needle for movement along the central longitudinal axis of said valve seat, and passageway means for supplying said liquid to said bore forwardly of said sealing gaskets.
Claim 3
Dependent Claim
55 words
Apparatus according to claim 1 wherein the distal end portion of said needle adjacent said valve portion is conical and has an included apex angle within the range of 94* and 116*, said distal end portion being external of and adjacent to said orifice tip when said needle is in the foreward valve sealing position.
Claim 4
Dependent Claim
11 words
Apparatus according to claim 2 wherein said angle is about 108*.
Claim 5
Dependent Claim
65 words
Apparatus according to claim 2 comprising a nose piece mounted to said body member over said tip, said nose piece having a plurality of orifices for directing a fluid in a predetermined pattern across the outer end of said tip to draw liquid therethrough when said needle valve is open, and passageway means in said body member for supplying said fluid to said nose piece.
Claim 6
Dependent Claim
26 words
Apparatus according to claim 4 comprising control means mounted to said body member for adjusting the rate of flow of said fluid to said nose piece.
Claim 7
Dependent Claim
121 words
Apparatus for atomizing and spraying a liquid, comprising a body, a tubular spray tip disposed at the front end of said body and having a frusto-conical valve seat, a needle reciprocably mounted in said body and having a frusto-conical intermediate portion adapted to seat against said valve seat when said needle is in a foreward position, the distal end of said needle adjacent said frusto-conical intermediate portion being conical and having an apex angle within the range of 94* and 116*, said distal end extending forewardly of said seat when said needle is in said forward position, means for directing an annular stream of air across said tip, and means for supplying said liquid to said seat interiorly of said tip.
Claim 8
Dependent Claim
121 words
Apparatus for atomizing and spraying a liquid, comprising a body, a tubular spray tip disposed at the front end of said body and having a frusto-conical valve seat, a needle reciprocably mounted in said body and having a frusto-conical intermediate portion adapted to seat against said valve seat when said needle is in a foreward position, the distal end of said needle adjacent said frusto-conical intermediate portion being conical and having an apex angle within the range of 94* and 116*, said distal end extending forewardly of said seat when said needle is in said forward position, means for directing an annular stream of air across said tip, and means for supplying said liquid to said seat interiorly of said tip.
Claim 9
Dependent Claim
18 words
Apparatus according to claim 6 wherein said frusto-conical intermediate portion has an angle of taper of about 10*.
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) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |