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Patent US4273287A successfully refreshed from Google Patents.
US4273287A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Atomizer head for paint spray guns
Assignee: J Wagner AG
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Filing: 1979-08-20
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Granted: 1981-06-16
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Expires: 1999-08-20
Abstract
Abstract An atomizer head for use with a spray gun has a centrally located paint spray orifice with an essentially elliptical cross-section and a pair of compressed air output orifices offset from the paint spray orifice. The output air forms a screen, with an elliptical cross-section, that prevents the paint spray from breaking up.
Inventors
- 👤 Willi Huber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:49
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/02; B05B7/06; B05B7/062; B05B7/066; B05B7/08; B05B7/0807; B05B7/0815
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
162 words
An improved paint spray nozzle having an outer housing, a centrally located cylindrical member having an upper conical surface on which is located a paint spray orifice having an essentially elliptical cross-section, operable to form a fan-shaped paint spray, a paint input port flow connected to the spray orifice, and a compressed air input port, the improvement comprising: a first and a second compressed air output orifice flow connected to the compressed air input port; said two orifices having a selected shape and being disposed, in spaced apart relationship on opposite sides of the cylindrical member supporting the spray orifice and located a selected distance upstream of an outer edge of the upper conical surface, at a selected acute angle with respect to a longitudinal axis of the cylindrical member; said two air output orifices cooperating with the cylindrical member and the upper conical surface to form a screen of air, having essentially an elliptically shaped cross-section fully enclosing the fan-shaped spray.
Claim 2
Dependent Claim
162 words
An improved paint spray nozzle having an outer housing, a centrally located cylindrical member having an upper conical surface on which is located a paint spray orifice having an essentially elliptical cross-section, operable to form a fan-shaped paint spray, a paint input port flow connected to the spray orifice, and a compressed air input port, the improvement comprising: a first and a second compressed air output orifice flow connected to the compressed air input port; said two orifices having a selected shape and being disposed, in spaced apart relationship on opposite sides of the cylindrical member supporting the spray orifice and located a selected distance upstream of an outer edge of the upper conical surface, at a selected acute angle with respect to a longitudinal axis of the cylindrical member; said two air output orifices cooperating with the cylindrical member and the upper conical surface to form a screen of air, having essentially an elliptically shaped cross-section fully enclosing the fan-shaped spray.
Claim 3
Dependent Claim
68 words
The improved nozzle according to claim 1 wherein: each of said air output orifices has a first elongated straight edge joined at a first and a second end by an arc of a circle having a selected radius and with each said straight edge of each said air output orifice being located adjacent the cylindrical member and parallel to a major axis of the elliptical paint spray orifice.
Claim 4
Dependent Claim
35 words
The improved nozzle according to claim 2 with: each said straight edge of each said air output nozzle having a length a selected amount greater than the major axis of the elliptical paint spray orifice.
Claim 5
Dependent Claim
17 words
The improved nozzle according to claim 1 wherein: said acute angle is substantially a forty-five degree angle.
Claim 6
Dependent Claim
157 words
An improved paint spray nozzle having an outer housing, a centrally located cylindrical member having an upper conical surface on which is located a paint spray orifice having an essentially elliptical cross-section, operable to form a fan-shaped paint spray, a paint input port flow connected to the spray orifice, and a compressed air input port, the improvement comprising: a means affixed to the nozzle, for forming an air screen, fully surrounding the fan-shaped paint spray, said air screen having an essentially elliptical cross-section, said means including: a first and a second compressed air output orifice having a selected shape and size, located in spaced relationship to the paint spray orifice, and at a selected angle with respect to a longitudinal axis of the cylindrical member; each said orifice has a straight edge joined by a circular edge and oriented with each said straight edge being essentially parallel to a major axis of the elliptical paint spray orifice.
Claim 7
Dependent Claim
157 words
An improved paint spray nozzle having an outer housing, a centrally located cylindrical member having an upper conical surface on which is located a paint spray orifice having an essentially elliptical cross-section, operable to form a fan-shaped paint spray, a paint input port flow connected to the spray orifice, and a compressed air input port, the improvement comprising: a means affixed to the nozzle, for forming an air screen, fully surrounding the fan-shaped paint spray, said air screen having an essentially elliptical cross-section, said means including: a first and a second compressed air output orifice having a selected shape and size, located in spaced relationship to the paint spray orifice, and at a selected angle with respect to a longitudinal axis of the cylindrical member; each said orifice has a straight edge joined by a circular edge and oriented with each said straight edge being essentially parallel to a major axis of the elliptical paint spray orifice.
Claim 8
Dependent Claim
35 words
The improved orifice according to claim 5 wherein: each said straight edge of each said orifice is located essentially adjacent the cylindrical member, a selected distance from the major axis of the paint spray orifice.
Claim 9
Dependent Claim
28 words
The improved nozzle according to claim 5 with each said straight edge having a length a selected amount greater than the major axis of the paint spray orifice.
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) | 1984-06-15 | 1984-12-15 | 1985-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-15 | 1988-12-15 | 1989-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-15 | 1992-12-15 | 1993-06-16 | $7700.00 | Window Closed / Lapsed |