US3693882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for spraying liquid
Assignee: Nippon Kogei Kogyo Co Ltd
•
Filing: 1969-12-18
•
Granted: 1972-09-26
•
Expires: 1989-12-18
Abstract
Abstract A method of spraying liquid in a flattened, conical shape through a spray gun having a circular air slit for injecting compressed air and a circular liquid slit disposed adjacent to and around the circular air slit for atomizing the liquid by injecting compressed air from one or more pairs of air jets from outside of the slits and from opposite dispositions with respect to the axis of the spray stream in the inward and tangential direction to the sectional circle of the spray stream of the liquid, thereby expanding the spray of conical liquid particles in one diametrical direction of the sectional circle of the spray stream so as to flatten the sectional circle. This method is accomplished by a spraying gun having one or more air jets disposed outside the central spraying portion of the liquid and opposite with each other with respect to the center of the spraying portion which is formed with a circular air slit for injecting the compressed air and a circular liquid slit disposed adjacent to and around the air slit for atomizing the liquid.
Inventors
- 👤 Tamotsu Watanabe
- 👤 Yasuo Vando
- 👤 Kozaburo Tsurugi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:16
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/02; B05B7/08; B05B7/0807; B05B7/0815; B05B5/00; B05B5/025; B05B5/03; B05B1/00; B05B1/26; B05B1/262; B05B1/265; B05B7/06; B05B7/062; B05B7/065
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
109 words
A device for spraying liquid in a pattern having a generally elliptical cross-section comprising a spray head portion including a circular air slit for injecting compressed air, a circular liquid slit disposed adjacent to and around said circular air slit for atomizing said liquid, and a pair of air jet apertures disposed outwardly and rearwardly of said slits and in opposed positions with respect to the center of said slits for injecting compressed air in a generally inward and tangential direction to the sectional circle of the sprayed stream of liquid particles so as to contact said sprayed stream of liquid particles substantially in the plane of said slits.
Claim 2
Independent Claim
109 words
A device for spraying liquid in a pattern having a generally elliptical cross-section comprising a spray head portion including a circular air slit for injecting compressed air, a circular liquid slit disposed adjacent to and around said circular air slit for atomizing said liquid, and a pair of air jet apertures disposed outwardly and rearwardly of said slits and in opposed positions with respect to the center of said slits for injecting compressed air in a generally inward and tangential direction to the sectional circle of the sprayed stream of liquid particles so as to contact said sprayed stream of liquid particles substantially in the plane of said slits.
Claim 3
Dependent Claim
17 words
A device as set forth in claim 1, wherein said air and liquid slits are essentially elliptical.
Claim 4
Dependent Claim
17 words
A device as set forth in claim 2, wherein said air and liquid slits are essentially polygonal.
Claim 5
Dependent Claim
62 words
A device as set forth in claim 1, wherein said air jet apertures comprise two pairs of air jet apertures disposed outwardly of said air and liquid slits and in opposed positions with respect to the center of said slits for injecting air jet streams inwardly and in opposed tangential directions with respect to the sectional circle of the sprayed liquid particles.
Claim 6
Dependent Claim
54 words
A device as set forth in claim 3, wherein said pair of air jet apertures are formed on a pair of projections integrally constructed with the spray head portion and each including an upper face tapered radially and axially inward and in a tangential direction to the sectional circle of the sprayed liquid particles.
Claim 7
Dependent Claim
56 words
A device as set forth in claim 5, wherein said pairs of air jet apertures are formed on a pair of projections integrally constructed with the spray head portion and each including a pair of upper faces tapered radially and axially inward and in opposed tangential directions to the sectional circle of said sprayed liquid particles.
Claim 8
Dependent Claim
40 words
A device as set froth in claim 5, wherein the angle of the air jet apertures disposed in opposed tangential directions are different, and the angle of the air jet apertures disposed in the same tangential direction are the same.
Claim 9
Independent Claim
154 words
A device for spraying liquid in a pattern having a generally elliptical cross-section comprising a generally cylindrical hollow chamber formed axially in a spray head portion and opened at one end of said spray head portion, an air stream expanding element inserted in said hollow chamber for forming a circular air slit for expandingly spraying liquid by injecting compressed air to form the liquid particles in a generally conical shape, a circular liquid slit disposed adjacent to and around said circular air slit for atomizing said liquid, and a pair of air jet apertures disposed outside of and rearwardly of said air and liquid slits and in opposed positions with respect to the center of said slits for injecting air jet streams in a direction inwardly and tangentially to the sectional circle of the sprayed liquid particles so as to contact said sprayed stream of liquid particles substantially in the plane of said slits.
Claim 10
Independent Claim
154 words
A device for spraying liquid in a pattern having a generally elliptical cross-section comprising a generally cylindrical hollow chamber formed axially in a spray head portion and opened at one end of said spray head portion, an air stream expanding element inserted in said hollow chamber for forming a circular air slit for expandingly spraying liquid by injecting compressed air to form the liquid particles in a generally conical shape, a circular liquid slit disposed adjacent to and around said circular air slit for atomizing said liquid, and a pair of air jet apertures disposed outside of and rearwardly of said air and liquid slits and in opposed positions with respect to the center of said slits for injecting air jet streams in a direction inwardly and tangentially to the sectional circle of the sprayed liquid particles so as to contact said sprayed stream of liquid particles substantially in the plane of said slits.
Claim 11
Independent Claim
155 words
A device for spraying liquid in a pattern having a generally elliptical cross-section comprising a cylindrical hollow chamber formed axially in a spray head portion and opened at one end of said spray head portion, an air stream expanding element inserted within said hollow chamber for forming a circular air slit for expandingly spraying the liquid by injecting compressed air to form the liquid particles in a generally conical shape, a circular liquid slit disposed adjacent to and around said circular air slit for atomizing said liquid, and a pair of air jet pipes disposed outwardly and rearwardly of said air and liquid slits and in opposed positions with respect to the center of said slits and so disposed as to inject the air jet streams in-wardly and tangentially to the sectional circle of the sprayed liquid particles so as to contact said sprayed stream of liquid particles sub-stantially in the plane of said slits.
Claim 12
Independent Claim
155 words
A device for spraying liquid in a pattern having a generally elliptical cross-section comprising a cylindrical hollow chamber formed axially in a spray head portion and opened at one end of said spray head portion, an air stream expanding element inserted within said hollow chamber for forming a circular air slit for expandingly spraying the liquid by injecting compressed air to form the liquid particles in a generally conical shape, a circular liquid slit disposed adjacent to and around said circular air slit for atomizing said liquid, and a pair of air jet pipes disposed outwardly and rearwardly of said air and liquid slits and in opposed positions with respect to the center of said slits and so disposed as to inject the air jet streams in-wardly and tangentially to the sectional circle of the sprayed liquid particles so as to contact said sprayed stream of liquid particles sub-stantially in the plane of said slits.
Claim 13
Dependent Claim
30 words
A device as set forth in claim 9, wherein said air jet apertures are provided on the flat faces of said projections so as to direct said air jet streams.
Claim 14
Independent Claim
148 words
A device for spraying liquid in a pattern having a generally elliptical cross-section comprising a cylindrical hollow chamber formed axially in a spray head portion and opened at one end of said spray head portion, an air stream expanding element inserted within said hollow chamber for forming a circular air slit for expandingly spraying liquid by injecting compressed air to form liquid particles in a generally conical shape, a circular liquid slit disposed adjacent to and around said circular air slit for atomizing said liquid, and two pairs of air jet apertures disposed outwardly and rearwardly of said air and liquid slits and in opposed positions with respect to the center of said slits for injecting air jet streams inwardly and tangentially of the sectional circle of said sprayed liquid particles so as to contact said sprayed stream of liquid particles substantially in the plane of said slits.
Claim 15
Independent Claim
148 words
A device for spraying liquid in a pattern having a generally elliptical cross-section comprising a cylindrical hollow chamber formed axially in a spray head portion and opened at one end of said spray head portion, an air stream expanding element inserted within said hollow chamber for forming a circular air slit for expandingly spraying liquid by injecting compressed air to form liquid particles in a generally conical shape, a circular liquid slit disposed adjacent to and around said circular air slit for atomizing said liquid, and two pairs of air jet apertures disposed outwardly and rearwardly of said air and liquid slits and in opposed positions with respect to the center of said slits for injecting air jet streams inwardly and tangentially of the sectional circle of said sprayed liquid particles so as to contact said sprayed stream of liquid particles substantially in the plane of said slits.
Claim 16
Independent Claim
154 words
A device for spraying liquid in a pattern having a generally elliptical cross-section comprising a cylindrical hollow chamber formed axially in a spray head portion and opened at one end of said spray head portion, an air stream expanding element inserted within said hollow chamber for forming a circular air slit for expandingly spraying the liquid by injecting compressed air to form the liquid particles in a generally conical shape, a circular liquid slit disposed adjacent to and around said circular air slit for atomizing said liquid, and two pairs of air jet pipes disposed outwardly and rearwardly of said air and liquid slits and in opposed positions with respect to the center of said slits and so directed as to inject air jet streams inwardly and tangentially of the sectional circle of said sprayed liquid particles so as to contact said sprayed stream of liquid particles substantially in the plane of said slits.
Claim 17
Independent Claim
154 words
A device for spraying liquid in a pattern having a generally elliptical cross-section comprising a cylindrical hollow chamber formed axially in a spray head portion and opened at one end of said spray head portion, an air stream expanding element inserted within said hollow chamber for forming a circular air slit for expandingly spraying the liquid by injecting compressed air to form the liquid particles in a generally conical shape, a circular liquid slit disposed adjacent to and around said circular air slit for atomizing said liquid, and two pairs of air jet pipes disposed outwardly and rearwardly of said air and liquid slits and in opposed positions with respect to the center of said slits and so directed as to inject air jet streams inwardly and tangentially of the sectional circle of said sprayed liquid particles so as to contact said sprayed stream of liquid particles substantially in the plane of said slits.
References Cited (Backward Citations)
US1752923A
Cited
US1906975A
Cited
US2049700A
Cited
US2070696A
Cited
DE721220C
Cited
US2416923A
Cited
US2569251A
Cited
US2511356A
Cited
US2587993A
Cited
US2894691A
Cited
US3195819A
Cited
US3181798A
Cited
US3252657A
Cited
US3463395A
Cited
US3455510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-26 | 1976-03-27 | 1976-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-26 | 1980-03-27 | 1980-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-26 | 1984-03-27 | 1984-09-26 | $7700.00 | Window Closed / Lapsed |