US3773261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Material removing device
Assignee: Boeing North American Inc
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Filing: 1971-07-02
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Granted: 1973-11-20
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Expires: 1991-07-02
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
- 👤 C Helton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:07
CPC Classifications
B; B23; B23K; B23K1/00; B23K1/018
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
162 words
An apparatus for removing material from a workpiece comprising in combination: a means for coupling a first source of gas; b an adjustable valve disposed in said means for coupling a 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 heating coils disposed in said housing; f ducting internal to said housing arranged to direct gas from said second source of gas around said heating coils; g a nozzle mounted to one end of said housing, said channelled defining a passageway therethrough; h a dumping valve interposed in the path of said third source of gas after said branch; i 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 2
Independent Claim
162 words
An apparatus for removing material from a workpiece comprising in combination: a means for coupling a first source of gas; b an adjustable valve disposed in said means for coupling a 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 heating coils disposed in said housing; f ducting internal to said housing arranged to direct gas from said second source of gas around said heating coils; g a nozzle mounted to one end of said housing, said channelled defining a passageway therethrough; h a dumping valve interposed in the path of said third source of gas after said branch; i 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 3
Dependent Claim
81 words
The apparatus according to claim 1 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 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 4
Dependent Claim
16 words
The apparatus according to claim 1 and wherein said nozzle is replaceably attached to said housing.
Claim 5
Dependent Claim
27 words
The apparatus according to claim 1 and further comprising a second adjustable valve interposed in said third source of gas between said branch and said dumping valve.
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
51 words
The apparatus as stated in claim 1, including: means for controlling a first flow of gas under pressure to a predetermined area; means for controlling a second flow of gas under pressure to a predetermined area; and means for selectively discharging said first and second flows of gas onto said workpiece.
Claim 8
Dependent Claim
23 words
The apparatus according to claim 6 wherein said second flow of gas is at a higher pressure than said first flow of gas.
Claim 9
Dependent Claim
44 words
The apparatus according to claim 6 wherein said means for selectively discharging said first and second flows of gas onto said workpiece so controls the flows of said gases such that said first gas flows for longer periods than said second flow of gas.
Claim 10
Dependent Claim
41 words
The apparatus according to claim 6 wherein said means for selectively discharging said first and second flows of gas onto said workpiece so controls said second flow of gas that said second flow of gas flows in blasts of short duration.
Claim 11
Dependent Claim
19 words
The apparatus according to claim 6 wherein said first flow of gas is gas at a selectively predetermined temperature.
Claim 12
Dependent Claim
22 words
The apparatus as stated in claim 6, including: b means for heating said first flow of gas to a selectively predetermined temperature.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |