US3091845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making honeycomb panel
Assignee: Rohr Inc
•
Filing: 1960-07-11
•
Granted: 1963-06-04
•
Expires: 1980-07-11
Abstract
No abstract record available.
Inventors
- 👤 Hartley R Herman
- 👤 Benjamin R Alsobrook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:29
CPC Classifications
B; B21; B21D; B21D47/00; B23; B23K; B23K1/00; B23K1/0008; B23K1/0014; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49879
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
THE METHOD OF BRAZING TOGETHER THE CELLULAR CORE AND SKINS OF A HONEYCOMB SANDWICH WHICH COMPRISES THE STEPS OF COATING A FACE OF EACH SKIN WITH BRAZING ALLOY; PLACING THE SANDWICH IN A FIXTURE CONSTRUCTED TO PRESS THE COATED SKIN FACES AGAINST THE ENDS OF THE CORE; PLACING THE FIXTURE AND SANDWICH IN A MUFFLE; PASSING AN INERT GAS INTO THE MUFFLE TO REMOVE THE AIR THEREFROM; PLACING THE MUFFLE WITH THE SANDWICH THEREIN IN A FURNACE HEATED TO A TEMPERATURE ABOVE THE MELTING POINT OF THE BRAZING ALLOY; PASSING A STREAM OF HYDROGEN GAS INTO THE MUFFLE WHILE THE SANDWICH IS HEATING TO THE BRAZING TEMPERATURE; REMOVING THE MUFFLE WITH THE SANDWICH ENCLOSED THEREIN FROM THE FURNACE; AND ALLOWING THE MUFFLE AND SANDWICH TO COOL TO A TEMPERATURE SUBSTANTIALLY BELOW THE MELTING POINT OF THE BRAZING ALLOY.
Claim 2
Independent Claim
138 words
THE METHOD OF BRAZING TOGETHER THE CELLULAR CORE AND SKINS OF A HONEYCOMB SANDWICH WHICH COMPRISES THE STEPS OF COATING A FACE OF EACH SKIN WITH BRAZING ALLOY; PLACING THE SANDWICH IN A FIXTURE CONSTRUCTED TO PRESS THE COATED SKIN FACES AGAINST THE ENDS OF THE CORE; PLACING THE FIXTURE AND SANDWICH IN A MUFFLE; PASSING AN INERT GAS INTO THE MUFFLE TO REMOVE THE AIR THEREFROM; PLACING THE MUFFLE WITH THE SANDWICH THEREIN IN A FURNACE HEATED TO A TEMPERATURE ABOVE THE MELTING POINT OF THE BRAZING ALLOY; PASSING A STREAM OF HYDROGEN GAS INTO THE MUFFLE WHILE THE SANDWICH IS HEATING TO THE BRAZING TEMPERATURE; REMOVING THE MUFFLE WITH THE SANDWICH ENCLOSED THEREIN FROM THE FURNACE; AND ALLOWING THE MUFFLE AND SANDWICH TO COOL TO A TEMPERATURE SUBSTANTIALLY BELOW THE MELTING POINT OF THE BRAZING ALLOY.
References Cited (Backward Citations)
US428056A
Cited
US2243979A
Cited
US2235965A
Cited
US2166998A
Cited
US2276847A
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US2406310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |