US3331174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite plates or panels
Assignee: Individual
•
Filing: 1964-12-17
•
Granted: 1967-07-18
•
Expires: 1984-12-17
Abstract
No abstract record available.
Inventors
- 👤 Wesch Ludwig
- 👤 Stummer Wilfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:53
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; B; B62; B62D; B62D33/00; B62D33/04; B63; B63B; B63B3/00; B63B3/14; B63B3/16; B63B3/20; B63B3/68; B63B5/00; B63B5/24; E04C2/02; E04C2/10; E04C2/20; E04C2/22; E04C2/26; B63B3/26; B63B2003/265; B63B2231/00; B63B2231/40; B63B2231/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A COMPOSITE PLATE OR PANEL COMPRISING AT LEAST TWO COVER PLATES HAVING INNER SURFACES, SPACING MEMBERS MAINTAINING SAID COVER PLATES IN SPACED-APART RELATIONSHIP, SAID SPACING MEMBERS EACH COMPRISING A PAIR OF PROFILED SECTIONS CONSISTING OF A PLASTICS MATERIAL REINFORCED BY GLASS FIBERS, EACH OF SAID PROFILED SECTIONS COMPRISING A WEB PORTION, A WALL PORTION EXTENDING OUTWARDLY FROM EACH SIDE OF SAID WEB PORTION AND SUBSTANTIALLY NORMAL THERTO, AND A FLANGE PORTION EXTENDING OUTWARDLY FROM THE OUTER EDGE OF EACH OF SAID WALL PORTIONS AND DISPOSED IN A PLANE SUBSTANTIALLY PARALLEL TO SAID WEB PORTION, SAID FLANGE PORTIONS OF EACH OF SAID PAIR OF PROFILED SECTIONS BEING ADHERED TOGETHER FORMING A GENERALLY BOX-SHAPED SPACER MEMBER, THE TWO WEB PORTIONS OF EACH OF SAID SPACING MEMBERS BEING ADHERED TO INNER OPPOSED SURFACES OF SAID COVER PLATES, FOAMED PLASTICS MATERIAL COMPLETELY FILLING THE SPACE BETWEEN SAID COVER PLATES AND ADHERED TO THE INNER SURFACE OF SAID COVER PLATES, AND FOAMED PLASTICS MATERIAL COMPLETELY FILLING SAID BOX-SHAPED SPACER MEMBERS AND ADHERED TO THE INNER SURFACE THEREOF.
Claim 2
Dependent Claim
172 words
A COMPOSITE PLATE OR PANEL COMPRISING AT LEAST TWO COVER PLATES HAVING INNER SURFACES, SPACING MEMBERS MAINTAINING SAID COVER PLATES IN SPACED-APART RELATIONSHIP, SAID SPACING MEMBERS EACH COMPRISING A PAIR OF PROFILED SECTIONS CONSISTING OF A PLASTICS MATERIAL REINFORCED BY GLASS FIBERS, EACH OF SAID PROFILED SECTIONS COMPRISING A WEB PORTION, A WALL PORTION EXTENDING OUTWARDLY FROM EACH SIDE OF SAID WEB PORTION AND SUBSTANTIALLY NORMAL THERTO, AND A FLANGE PORTION EXTENDING OUTWARDLY FROM THE OUTER EDGE OF EACH OF SAID WALL PORTIONS AND DISPOSED IN A PLANE SUBSTANTIALLY PARALLEL TO SAID WEB PORTION, SAID FLANGE PORTIONS OF EACH OF SAID PAIR OF PROFILED SECTIONS BEING ADHERED TOGETHER FORMING A GENERALLY BOX-SHAPED SPACER MEMBER, THE TWO WEB PORTIONS OF EACH OF SAID SPACING MEMBERS BEING ADHERED TO INNER OPPOSED SURFACES OF SAID COVER PLATES, FOAMED PLASTICS MATERIAL COMPLETELY FILLING THE SPACE BETWEEN SAID COVER PLATES AND ADHERED TO THE INNER SURFACE OF SAID COVER PLATES, AND FOAMED PLASTICS MATERIAL COMPLETELY FILLING SAID BOX-SHAPED SPACER MEMBERS AND ADHERED TO THE INNER SURFACE THEREOF.
References Cited (Backward Citations)
CA616577A
Cited
GB558166A
Cited
GB683542A
Cited
US2874941A
Cited
US2962323A
Cited
US2858580A
Cited
GB890513A
Cited
FR1316325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |