Patent US3130672A successfully refreshed from Google Patents.
US3130672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rocket grain construction
Assignee: Hexcel Products Inc
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Filing: 1959-04-07
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Granted: 1964-04-28
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Expires: 1979-04-07
Abstract
No abstract record available.
Inventors
- 👤 Wells A Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:55
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/10; F02K9/14; C; C06; C06B; C06B45/00; C06B45/12; F02K9/24; F02K9/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN A ROCKET GRAIN STRUCTURE THE COMBINATION OF: A PLURALITY OF INDIVIDUAL STRUCTURALLY INTEGRAL SANDWICH MEMBERS STAKCED ONE UPON THE OTHER TO FORM A COMPOSITE ROCKET GRAIN STRUCTURE; EACH SANDWICH MEMBER COMPRISING A SHEET OF HONEYCOMB CELLULAR MATERIAL HAVING CELLULAR OPENINGS AT THE TWO BROAD FACES OF THE SHEET; FIRST AND SECOND SUBSTANTIALLY FLAT SKINS COVERING THE TWO BROAD FACES F SAID CELLULAR MATERIAL WITH THE AXES OF THE CELLS DISPOSED SUBSTANTIALLY PERPENDICULAR TO THE FLAT SKINS; AND MEANS ATTACHING SAID FLAT SKINS ON SAID SHEET OF CELLULAR MATERIAL TO FORM A FLUID TIGHT SEAL FOR EACH
Claim 2
Dependent Claim
97 words
IN A ROCKET GRAIN STRUCTURE THE COMBINATION OF: A PLURALITY OF INDIVIDUAL STRUCTURALLY INTEGRAL SANDWICH MEMBERS STAKCED ONE UPON THE OTHER TO FORM A COMPOSITE ROCKET GRAIN STRUCTURE; EACH SANDWICH MEMBER COMPRISING A SHEET OF HONEYCOMB CELLULAR MATERIAL HAVING CELLULAR OPENINGS AT THE TWO BROAD FACES OF THE SHEET; FIRST AND SECOND SUBSTANTIALLY FLAT SKINS COVERING THE TWO BROAD FACES F SAID CELLULAR MATERIAL WITH THE AXES OF THE CELLS DISPOSED SUBSTANTIALLY PERPENDICULAR TO THE FLAT SKINS; AND MEANS ATTACHING SAID FLAT SKINS ON SAID SHEET OF CELLULAR MATERIAL TO FORM A FLUID TIGHT SEAL FOR EACH
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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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |