US3130089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat treatment of preformed finishmachined articles
Assignee: Teledyne Ryan Aeronautical Corp
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Filing: 1960-07-05
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Granted: 1964-04-21
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Expires: 1980-07-05
Abstract
No abstract record available.
Inventors
- 👤 Ernest F Mellinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:20
CPC Classifications
C; C22; C22F; C22F1/00; C22F1/008; C21; C21D; C21D1/00; C21D1/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A METHOD OF HEAT TREATING A PRE-FORMED FINISH MACHINED ARTICLE SUSCEPTIBLE TO OXIDATION AND DISTORTION DURING THE HEAT TREATING, COMPRISING: SEALING THE ARTICLE IN AN ENVELOPE OF THIN, SUBSTANTIALLY FLEXIBLE MATERIAL RESISTANT TO THE HEAT TO BE APPLIED; PURGING THE OXIDE-FORMING ATMOSPHERE FROM THE ENVELOPE; HEATING THE ARTICLE TO THE REQUIRED HEAT TREATMENT TEMPERATURE; CLAMPING THE ENVELOPE AND THE ARTICLE CONTAINED THEREIN IN CLAMPING MEANS SHAPED TO CONFORM EXACTLY TO THE DESIRED FINAL SHAPE OF THE HEAT TREATED ARTICLE, FOR AT LEAST THE PORTION OF THE HEAT TREATMENT PROCESS DURING WHICH DISTORTION MAY OCCUR, THE ENVELOPE BEING DEFORMED BY THE CLAMPING MEANS AND FITTING CLOSELY AROUND THE ARTICLE; REMOVING THE ENVELOPE AND ARTICLE FROM THE CLAMPING MEANS; AND REMOVING THE ARTICLE FROM THE ENVELOPE, WHEREBY THE RESULTANT HEAT TREATED ARTICLE HAS THE DESIRED FINAL SHAPE OF THE FINISHED, HEAT TREATED ARTICLE AND THE NECESSITY FOR FURTHER MACHINING IS OBVIATED.
Claim 2
Independent Claim
149 words
A METHOD OF HEAT TREATING A PRE-FORMED FINISH MACHINED ARTICLE SUSCEPTIBLE TO OXIDATION AND DISTORTION DURING THE HEAT TREATING, COMPRISING: SEALING THE ARTICLE IN AN ENVELOPE OF THIN, SUBSTANTIALLY FLEXIBLE MATERIAL RESISTANT TO THE HEAT TO BE APPLIED; PURGING THE OXIDE-FORMING ATMOSPHERE FROM THE ENVELOPE; HEATING THE ARTICLE TO THE REQUIRED HEAT TREATMENT TEMPERATURE; CLAMPING THE ENVELOPE AND THE ARTICLE CONTAINED THEREIN IN CLAMPING MEANS SHAPED TO CONFORM EXACTLY TO THE DESIRED FINAL SHAPE OF THE HEAT TREATED ARTICLE, FOR AT LEAST THE PORTION OF THE HEAT TREATMENT PROCESS DURING WHICH DISTORTION MAY OCCUR, THE ENVELOPE BEING DEFORMED BY THE CLAMPING MEANS AND FITTING CLOSELY AROUND THE ARTICLE; REMOVING THE ENVELOPE AND ARTICLE FROM THE CLAMPING MEANS; AND REMOVING THE ARTICLE FROM THE ENVELOPE, WHEREBY THE RESULTANT HEAT TREATED ARTICLE HAS THE DESIRED FINAL SHAPE OF THE FINISHED, HEAT TREATED ARTICLE AND THE NECESSITY FOR FURTHER MACHINING IS OBVIATED.
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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |