Patent US6074228A successfully refreshed from Google Patents.
Patent US3844485A successfully refreshed from Google Patents.
US3844485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray apparatus
Assignee: HAGEN Mfg CO
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Filing: 1973-08-10
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Granted: 1974-10-29
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Expires: 1993-08-10
Abstract
Abstract The invention is a spray gun for mixing a liquid with a dry fibrous or particulate substance while the substance is being applied to a substrate. A central cylindrical bore directs the discharge of dry material while a plurality of pairs of spray nozzles, situated on two different circles around the bore, spray an adhesive or other liquid into the dry material stream. Each nozzle of a pair is located in diametric opposition to the other. The spray nozzles are slotted to produce fan-shaped sprays, all slots being aligned parallel to a vertical line bisecting the gun. Although each pair of nozzles produces a line of spray intersection through the cylindrical stream of dry material, the intersection lines fall at different points along the length of the stream. This configuration maximizes the mixing characteristic of the gun, holding dry material drop off down to about 5 percent or less.
Inventors
- 👤 R Waggoner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:18
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/14; B05B7/1481; B05B7/149; B05B7/1495
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
238 words
A spray gun for mixing a liquid with a dry material while the dry material is being thrust from the gun, said spray gun comprising a body, an elongated dry material bore defined by said body, such bore having a circular dry material outlet orifice, such bore being suitable for supplying dry material for ejection through said orifice, whereby a generally cylindrical dry material stream is ejected, a plurality of pairs of slotted spray nozzles mounted in said body circumjacent said orifice, each of said spray nozzles having an elongated slot orifice and each of said slot orifices being aligned parallel to a single line extending in a direction normal to the longitudinal centerline of said bore, said nozzles being adapted to eject flat fan-shaped streams of liquid, said nozzles being oriented such that a first of said pairs of nozzles ejects both of its fan-shaped streams in a single plane, said streams of said first pair having centerlines intersecting in a point within said dry material stream, and such that a second of said pairs oF nozzles ejects its fanshaped streams convergingly to intersect in a line lying in said single plane and non-coincident with such point, liquid supply means for supplying a liquid to said plurality of pairs of nozzles, and valve means in communication with said liquid supply means for regulating the rate of flow of the liquid to said plurality of pairs of nozzles.
Claim 2
Dependent Claim
238 words
A spray gun for mixing a liquid with a dry material while the dry material is being thrust from the gun, said spray gun comprising a body, an elongated dry material bore defined by said body, such bore having a circular dry material outlet orifice, such bore being suitable for supplying dry material for ejection through said orifice, whereby a generally cylindrical dry material stream is ejected, a plurality of pairs of slotted spray nozzles mounted in said body circumjacent said orifice, each of said spray nozzles having an elongated slot orifice and each of said slot orifices being aligned parallel to a single line extending in a direction normal to the longitudinal centerline of said bore, said nozzles being adapted to eject flat fan-shaped streams of liquid, said nozzles being oriented such that a first of said pairs of nozzles ejects both of its fan-shaped streams in a single plane, said streams of said first pair having centerlines intersecting in a point within said dry material stream, and such that a second of said pairs oF nozzles ejects its fanshaped streams convergingly to intersect in a line lying in said single plane and non-coincident with such point, liquid supply means for supplying a liquid to said plurality of pairs of nozzles, and valve means in communication with said liquid supply means for regulating the rate of flow of the liquid to said plurality of pairs of nozzles.
Claim 3
Dependent Claim
50 words
A spray gun, according to claim 1, wherein said body has a liquid inlet and said liquid supply means includes a plurality of interior passageways defined by said body and communicating between said spray nozzles and said liquid inlet and a liquid fitting assembly extending outwardly from said liquid inlet.
Claim 4
Dependent Claim
22 words
A spray gun, according to claim 2, wherein said valve means comprises a valve positioned in communication with said liquid fitting assembly.
Claim 5
Dependent Claim
40 words
A spray gun, according to claim 3, wherein such bore defines a longitudinally extending centerline and each of said first pair of nozzles has a spray centerline which defines an angle with said bore centerline of between 30* and 35*.
Claim 6
Dependent Claim
32 words
A spray gun, according to claim 4, wherein each of said second pair of nozzles has a spray centerline which defines an angle with said bore centerline of between 8* and 12*.
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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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |