Patent US3661315A successfully refreshed from Google Patents.
US3661315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material removing device
Assignee: Boeing North American Inc
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Filing: 1969-06-13
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Granted: 1972-05-09
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Expires: 1989-06-13
Abstract
Abstract An apparatus for removing material from a workpiece having a first source of heated gas and a second source of gas. The first and second gas sources are housed such that the two sources of gas are selectively dischargeable to heat and remove the material, materials, or materials and components from a workpiece.
Inventors
- 👤 Charles J Helton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:09
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/018
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
130 words
An apparatus for removing material from a workpiece comprising in combination: a. a housing defining an inner cavity therein; b. heating coils disposed in said cavity; c. means for coupling a first source of gas to said housing such that said gas enters said inner cavity and flows around said heating coils; d. a nozzle mounted to one end of said housing and defining a passage in communication with said inner cavity and the outside of said housing whereby said first source of gas is discharged from said inner cavity; e. means for coupling a second source of higher pressure gas to said housing; f. a passage communicating with said inner cavity and the outside of said housing whereby said second source of gas is discharged from said inner cavity.
Claim 2
Independent Claim
130 words
An apparatus for removing material from a workpiece comprising in combination: a. a housing defining an inner cavity therein; b. heating coils disposed in said cavity; c. means for coupling a first source of gas to said housing such that said gas enters said inner cavity and flows around said heating coils; d. a nozzle mounted to one end of said housing and defining a passage in communication with said inner cavity and the outside of said housing whereby said first source of gas is discharged from said inner cavity; e. means for coupling a second source of higher pressure gas to said housing; f. a passage communicating with said inner cavity and the outside of said housing whereby said second source of gas is discharged from said inner cavity.
Claim 3
Dependent Claim
33 words
The apparatus according to claim 1 and further comprising a valve operatively disposed in said second source of gas such that said second source of gas can be controllably released into said passageway.
Claim 4
Dependent Claim
27 words
The apparatus according to claim 1 wherein said passageway terminates in proximity to said nozzle such that said second source of gas is discharged through said nozzle.
Claim 5
Dependent Claim
42 words
The apparatus according to claim 1 wherein said nozzle is replaceably mounted to said housing such that nozzles defining orifices of varying configurations may be mounted to said housing to control the shape of the gas as it exits from said nozzle.
Claim 6
Dependent Claim
24 words
The apparatus according to claim 1 wherEin said second source of gas is discharged from said inner cavity through said passage in said nozzle.
Claim 7
Dependent Claim
16 words
The apparatus according to claim 1 wherein said first source of gas is an air source.
Claim 8
Dependent Claim
16 words
The apparatus according to claim 1 wherein said second source of gas is an air source.
Claim 9
Dependent Claim
89 words
The apparatus according to claim 1 and further comprising: a. means for coupling to a central source of gas; b. a first connection from said means for coupling to a central source of gas to said means for coupling a first source of gas and having a regulator operably disposed in said connection; and c. a second connection from said means for coupling to a central source of gas to said means for coupling a second source of gas and having a dumping valve disposed in said second connection.
Claim 10
Dependent Claim
36 words
The apparatus according to claim 1 and further comprising means for selectively varying the current in said heating coils such that said gas from said first source of gas may be heated to selectively varied temperatures.
Claim 11
Independent Claim
159 words
An apparatus for removing material from a workpiece comprising in combination: a. a housing defining an inner cavity therein; b. heating coils disposed in said cavity; c. a first source of pressurized gas attached through said housing such that said gas enters said inner cavity and flows around said heating coils; d. a nozzle mounted to one end of said housing and defining a passage in communication with said inner cavity and the outside of said housing whereby said first source of gas is discharged from said inner cavity through said nozzle; e. a second source of pressurized gas attached through said housing; f. a passage disposed in said inner cavity for said second source of gas said passage defining an orifice at the termination of said passage in close proximity to said nozzle whereby said second source of gas is discharged from said inner cavity in the same direction as the first gas is discharged through said nozzle.
Claim 12
Independent Claim
159 words
An apparatus for removing material from a workpiece comprising in combination: a. a housing defining an inner cavity therein; b. heating coils disposed in said cavity; c. a first source of pressurized gas attached through said housing such that said gas enters said inner cavity and flows around said heating coils; d. a nozzle mounted to one end of said housing and defining a passage in communication with said inner cavity and the outside of said housing whereby said first source of gas is discharged from said inner cavity through said nozzle; e. a second source of pressurized gas attached through said housing; f. a passage disposed in said inner cavity for said second source of gas said passage defining an orifice at the termination of said passage in close proximity to said nozzle whereby said second source of gas is discharged from said inner cavity in the same direction as the first gas is discharged through said nozzle.
Claim 13
Dependent Claim
33 words
The apparatus according to claim 10 and further comprising a valve operatively disposed in said second source of gas such that said second source of gas can be controllably released into said passageway.
Claim 14
Dependent Claim
27 words
The apparatus according to claim 10 wherein said passageway terminates in proximity to said nozzle such that said second source of gas is discharged through said nozzle.
Claim 15
Dependent Claim
26 words
The apparatus according to claim 10 wherein said second source of gas is at a pressure greater than the pressure of said first source of gas.
Claim 16
Dependent Claim
29 words
The apparatus according to claim 10 wherein said nozzle is replaceably mounted to said housing such that nozzles defining orifices of varying configurations may be mounted to said housing.
Claim 17
Dependent Claim
24 words
The apparatus according to claim 10 wherein said second source of gas is discharged from said inner cavity through said passage in said nozzle.
Claim 18
Dependent Claim
16 words
The apparatus according to claim 10 wherein said first source of gas is an air source.
Claim 19
Dependent Claim
16 words
The apparatus according to claim 10 wherein said second source of gas is an air source.
Claim 20
Dependent Claim
68 words
The apparatus according to claim 10 and further comprising: a. a central source of pressurized gas; b. a first connection from said central source of gas to said first source of gas and having a regulator operably disposed in said connection; and c. a second connection from said central source of gas to said second source of gas and having a dumping valve disposed in said second connection.
Claim 21
Dependent Claim
36 words
The apparatus according to claim 10 and further comprising means for selectively varying the current in said heating coils such that said gas from said first source of gas may be heated to selectively varied temperatures.
Claim 22
Independent Claim
173 words
An apparatus for removing material from a workpiece comprising in combination: a. a first source of pressurized gas; b. an adjustable valve disposed in said first source of gas; c. a housing defining therein a cavity; d. a branch connection disposed after said adjustable valve, said bRanch forming second and third source of gas paths from said branch to said housing; e. an adjustable regulator interposed in the path of said second source of gas after said branch; f. heating coils disposed in said housing; g. ducting internal to said housing arranged to direct gas from said second source of gas around said heating coils; h. a nozzle mounted to one end of said housing, said nozzle defining a passageway therethrough; i. a dumping valve interposed in the path of said third source of gas after said branch; j. a passageway internal to said housing and attached to said housing where said third source of gas enters said housing, said passageway forming a conduit for said third source of gas in said housing.
Claim 23
Independent Claim
173 words
An apparatus for removing material from a workpiece comprising in combination: a. a first source of pressurized gas; b. an adjustable valve disposed in said first source of gas; c. a housing defining therein a cavity; d. a branch connection disposed after said adjustable valve, said bRanch forming second and third source of gas paths from said branch to said housing; e. an adjustable regulator interposed in the path of said second source of gas after said branch; f. heating coils disposed in said housing; g. ducting internal to said housing arranged to direct gas from said second source of gas around said heating coils; h. a nozzle mounted to one end of said housing, said nozzle defining a passageway therethrough; i. a dumping valve interposed in the path of said third source of gas after said branch; j. a passageway internal to said housing and attached to said housing where said third source of gas enters said housing, said passageway forming a conduit for said third source of gas in said housing.
Claim 24
Dependent Claim
82 words
The apparatus according to claim 20 wherein said housing defines a plurality of orifices and further comprising: a. a channelled coupling defining a plurality of gas passages, said channelled coupling interposed between said second source of gas and said housing and connecting said second source of gas to said housing such that said gas passages are aligned with said housing orifices; b. a plurality of ducting internal to said housing arranged to direct gas from said channelled coupling around said heating coils.
Claim 25
Dependent Claim
16 words
The apparatus according to claim 20 and wherein said nozzle is replaceably attached to said housing.
Claim 26
Dependent Claim
27 words
The apparatus according to claim 20 and further comprising a second adjustable valve interpose in said third source of gas between said branch and said dumping valve.
Claim 27
Dependent Claim
24 words
The apparatus according to claim 20 wherein said second source of gas is discharged from said inner cavity through said passage in said nozzle.
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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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |