Patent US3305196A successfully refreshed from Google Patents.
US3305196A
Expired / Lapsed
US
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Vehicular structures made from foamed plastic materials
Assignee: Dow Chemical Co
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Filing: 1964-11-04
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Granted: 1967-02-21
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Expires: 1984-11-04
Abstract
No abstract record available.
Inventors
- 👤 Robert G Hanlon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:03
CPC Classifications
B; B29; B29C; B29C44/00; B29C44/34; B29C44/3415; B29C44/3426; B29C44/343; B29C44/02; B29C44/12; B29C44/1266; B64; B64C; B64C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A STRUCTURAL SECTION FOR A VEHICLE COMPRISING A LIGHTWEIGHT, HOLLOW, TUBULAR, LOAD-SUPPORTING SKELETON COMPRISING ONE OR MORE PRINCIPAL MEMBERS AND ONE OR MORE LATERAL MEMBERS BRANCHING FROM SAID PRINCIPAL MEMBER IN SUCH A FASHION THAT THE INTERNAL HOLLOW PORTION OF EACH LATERAL MEMBER IS JOINED TO THE INTERNAL HOLLOW PORTION OF AT LEAST ONE OF SAID PRINCIPAL MEMBERS SUBSTANTIALLY EVERY MEMBER OF SAID SKELETON BEING PIERCED WITH A MULTIPLICITY OF SMALL ORIFICES FORMING A MULTIDIRECTIONAL PATTERN OF HOLES OVER THE SURFACE OF SAID SKELETON, AN OUTER SMOOTH SKIN SPACED APART FROM SAID SKELETON AND PROVIDING THE OUTER CONFIGURATION OF SAID STRUCTURAL SECTION, AND A RIGID, CELLULAR, PLASTIC FOAM FILLING THE SPACE BETWEEN SAID SKELETON AND SAID SKIN.
Claim 2
Dependent Claim
117 words
A STRUCTURAL SECTION FOR A VEHICLE COMPRISING A LIGHTWEIGHT, HOLLOW, TUBULAR, LOAD-SUPPORTING SKELETON COMPRISING ONE OR MORE PRINCIPAL MEMBERS AND ONE OR MORE LATERAL MEMBERS BRANCHING FROM SAID PRINCIPAL MEMBER IN SUCH A FASHION THAT THE INTERNAL HOLLOW PORTION OF EACH LATERAL MEMBER IS JOINED TO THE INTERNAL HOLLOW PORTION OF AT LEAST ONE OF SAID PRINCIPAL MEMBERS SUBSTANTIALLY EVERY MEMBER OF SAID SKELETON BEING PIERCED WITH A MULTIPLICITY OF SMALL ORIFICES FORMING A MULTIDIRECTIONAL PATTERN OF HOLES OVER THE SURFACE OF SAID SKELETON, AN OUTER SMOOTH SKIN SPACED APART FROM SAID SKELETON AND PROVIDING THE OUTER CONFIGURATION OF SAID STRUCTURAL SECTION, AND A RIGID, CELLULAR, PLASTIC FOAM FILLING THE SPACE BETWEEN SAID SKELETON AND SAID SKIN.
References Cited (Backward Citations)
US3081488A
Cited
US3229935A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-20 | 1970-08-22 | 1971-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-20 | 1974-08-22 | 1975-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-20 | 1978-08-22 | 1979-02-21 | $7700.00 | Window Closed / Lapsed |