US3256669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sandwich panel
Assignee: Ohio Metalsmiths Corp
•
Filing: 1963-10-08
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Granted: 1966-06-21
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Expires: 1983-10-08
Abstract
No abstract record available.
Inventors
- 👤 Robert C Seiwert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:12
CPC Classifications
B; B62; B62D; B62D33/00; B62D33/04; B21; B21D; B21D49/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A COMPOSITE PANEL ASSEMBLY COMPRISING: (A) A SMOOTH, FLAT, METAL FACE PANEL HAVING INNER AND OUTER SURFACES; (B) A RIGID CORE HAVING APERTURES AND FRONT AND BACK SURFACES WITH THE FRONT SURFACE ABUTTING THE MAJORITY OF THE FACE PANEL INNER SURFACE AND THE FACE PANEL PROJECTING OUTWARDLY FROM THE PERIPHERY OF THE CORE ABOUT ITS CIRCUMFERENCE; (C) A BACK PANEL ABUTTING THE CORE BACK SURFACE; (D) THE BACK PANEL HAVING A PLURALITY OF EMBOSSMENTS EACH PROJECTING INTO A DIFFERENT ONE OF THE APERTURES AND CONTACTING THE FACE PANEL INNER SURFACE, THE EMBOSSMENTS BEING FIXED TO THE FACE PANEL; (E) SAID EMBOSSMENTS AND SAID CORE FORMING A PLURALITY OF COMPRESSIVE INTERFERENCE FITS AT JUNCTURES OF THE CORE BACK SURFACES AND THE WALLS DEFINING SAID APERTURES.
Claim 2
Dependent Claim
124 words
A COMPOSITE PANEL ASSEMBLY COMPRISING: (A) A SMOOTH, FLAT, METAL FACE PANEL HAVING INNER AND OUTER SURFACES; (B) A RIGID CORE HAVING APERTURES AND FRONT AND BACK SURFACES WITH THE FRONT SURFACE ABUTTING THE MAJORITY OF THE FACE PANEL INNER SURFACE AND THE FACE PANEL PROJECTING OUTWARDLY FROM THE PERIPHERY OF THE CORE ABOUT ITS CIRCUMFERENCE; (C) A BACK PANEL ABUTTING THE CORE BACK SURFACE; (D) THE BACK PANEL HAVING A PLURALITY OF EMBOSSMENTS EACH PROJECTING INTO A DIFFERENT ONE OF THE APERTURES AND CONTACTING THE FACE PANEL INNER SURFACE, THE EMBOSSMENTS BEING FIXED TO THE FACE PANEL; (E) SAID EMBOSSMENTS AND SAID CORE FORMING A PLURALITY OF COMPRESSIVE INTERFERENCE FITS AT JUNCTURES OF THE CORE BACK SURFACES AND THE WALLS DEFINING SAID APERTURES.
References Cited (Backward Citations)
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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) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |