Patent US2857662A successfully refreshed from Google Patents.
US2857662A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of manufacturing metal structures
Assignee: Bristol Aircraft Ltd
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Filing: 1953-07-13
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Granted: 1958-10-28
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Expires: 1973-07-13
Abstract
No abstract record available.
Inventors
- 👤 Allen Charles William Grainger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:33
CPC Classifications
B; B21; B21D; B21D53/00; B21D47/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49867; Y10T29/49869
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A METHOD OF FORMING AN ASSEMBLY COMPRISING A SINGLE CURVATURE SKIN, STRUCTURE SERVING PRIARILY TO RETAIN THE SKIN IN ITS REQUIRED CURVATURE, AND AT LEAST ONE OTHER MEMBER SERVING PRIMARILY TO STIFFEN THE SKIN, SAID OTHER MEMBER COMPRISING A SHEET MATERIAL PART WHICH IS CONTIGUOUS WITH AND BONDED TO A SURFACE OF THE SKIN BY MEANS OF THERMOSETTING MATERIAL, WHICH METHOD COMPRISES THE STEPS OF GIVING SAID SHEET MATERIAL PART OF SAID OTHER MEMBER A PERMANENT SET CURVATURE SUBSTANTIALLY THAT OF ITS FINAL SHAPE, SUPPORTING SAID SKIN, PLACING SAID OTHER MEMBER IN REQUIRED RELATION UPON SAID SKIN WITH THE INTERPOSITION OF A LAYER OF THEROSETTING BONDING MATERIAL, PRESSING SAID SHEET MATERIAL PART ONTO SAID SKIN SO AS AT LEAST PARTIALLY FLATTEN SAID SHEET MATERIAL PART AND TO EFFECT BONDING BETWEEN SAID SHEET ATERIAL PART AND SAID SKIN, AND THEN ATTACHING TE BONDED SKIN-MEMBER ASSEMBLAGE TO SAID STRUCTURE SERVING TO RETAIN THE SKIN IN ITS REQUIRED CURVATURE.
Claim 2
Independent Claim
156 words
A METHOD OF FORMING AN ASSEMBLY COMPRISING A SINGLE CURVATURE SKIN, STRUCTURE SERVING PRIARILY TO RETAIN THE SKIN IN ITS REQUIRED CURVATURE, AND AT LEAST ONE OTHER MEMBER SERVING PRIMARILY TO STIFFEN THE SKIN, SAID OTHER MEMBER COMPRISING A SHEET MATERIAL PART WHICH IS CONTIGUOUS WITH AND BONDED TO A SURFACE OF THE SKIN BY MEANS OF THERMOSETTING MATERIAL, WHICH METHOD COMPRISES THE STEPS OF GIVING SAID SHEET MATERIAL PART OF SAID OTHER MEMBER A PERMANENT SET CURVATURE SUBSTANTIALLY THAT OF ITS FINAL SHAPE, SUPPORTING SAID SKIN, PLACING SAID OTHER MEMBER IN REQUIRED RELATION UPON SAID SKIN WITH THE INTERPOSITION OF A LAYER OF THEROSETTING BONDING MATERIAL, PRESSING SAID SHEET MATERIAL PART ONTO SAID SKIN SO AS AT LEAST PARTIALLY FLATTEN SAID SHEET MATERIAL PART AND TO EFFECT BONDING BETWEEN SAID SHEET ATERIAL PART AND SAID SKIN, AND THEN ATTACHING TE BONDED SKIN-MEMBER ASSEMBLAGE TO SAID STRUCTURE SERVING TO RETAIN THE SKIN IN ITS REQUIRED CURVATURE.
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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) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |