US3170192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for corrugating sheets of fibrous cement
Assignee: Individual
•
Filing: 1964-02-20
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Granted: 1965-02-23
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Expires: 1984-02-20
Abstract
No abstract record available.
Inventors
- 👤 Oesterheld Karl Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:53
CPC Classifications
B; B29; B29C; B29C53/00; B29C53/22; B29C53/24; B29C53/28; B29C51/00; B29C51/26; B29C51/30; B29C51/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
200 words
A DEVICE FOR CORRUGATING SHEETS OF FIBROUS CEMENT COMPRISING A CORRUGATING SUCTION BOX SUBDIVIDED INTO A PLURALITY OF LONGITUDINALLY EXTENDING SEPARATE SUCTION CHAMBERS, A RIGID COVER DISPOSED ON SAID CORRUGATING SUCTION BOX AND PROVIDED WITH SUCTION HOLES AND WITH CORRUGATIONS CORRESPONDING TO THE CORRUGATIONS TO BE FORMED IN SAID SHEETS OF FIBROUS CEMENT, AN AUXILIARY SUCTION BOX ARRANGED AT EITHER END OF SAID CORRUGATING SUCTION BOX AND IN SPACED RELATIONSHIP THERETO, A PLAIN SURFACE COVER DISPOSED ON EITHER OF SAID AUXILIARY SUCTION BOXES AND PROVIDED WITH SUCTION HOLES, A FLEXIBLE LAYER WITH AN AIR PERMEABLE MIDDLE PORTION AND AIR IMPERMEABLE END PORTIONS, WHICH FOR SUPPORTING SAID SHEETS OF FIBROUS CEMENT TO BE CORRUGATED IS STRETCHED OVER SAID CORRUGATING SUCTION BOX AND SAID AUXILIARY SUCTION BOXES IN SUCH A MANNER THAT SAID AIR PERMEABLE MIDDLE PORTION IS SITUATED ON SAID CORRUGATED COVER OF SAID CORRUGATING SUCTION BOX, WHEREAS SAID AIR IMPERMEABLE END PORTIONS ARE SITUATED ON SAID PLAIN SURFACE COVERS OF SAID AUXILIARY SUCTION BOXES WITH PARTS OF SAID IMPERMEABLE END PORTIONS AND PROJECTING BEYOND SAID AUXILIARY SUCTION BOXES, AND TENSION MEMBERS SECURED TO SAID AIR IMPERMEABLE END PORTIONS OF SAID FLEXIBLE LAYER AND EXERTING A PREDETERMINED AMOUNT OF PULL THEREON.
Claim 2
Independent Claim
200 words
A DEVICE FOR CORRUGATING SHEETS OF FIBROUS CEMENT COMPRISING A CORRUGATING SUCTION BOX SUBDIVIDED INTO A PLURALITY OF LONGITUDINALLY EXTENDING SEPARATE SUCTION CHAMBERS, A RIGID COVER DISPOSED ON SAID CORRUGATING SUCTION BOX AND PROVIDED WITH SUCTION HOLES AND WITH CORRUGATIONS CORRESPONDING TO THE CORRUGATIONS TO BE FORMED IN SAID SHEETS OF FIBROUS CEMENT, AN AUXILIARY SUCTION BOX ARRANGED AT EITHER END OF SAID CORRUGATING SUCTION BOX AND IN SPACED RELATIONSHIP THERETO, A PLAIN SURFACE COVER DISPOSED ON EITHER OF SAID AUXILIARY SUCTION BOXES AND PROVIDED WITH SUCTION HOLES, A FLEXIBLE LAYER WITH AN AIR PERMEABLE MIDDLE PORTION AND AIR IMPERMEABLE END PORTIONS, WHICH FOR SUPPORTING SAID SHEETS OF FIBROUS CEMENT TO BE CORRUGATED IS STRETCHED OVER SAID CORRUGATING SUCTION BOX AND SAID AUXILIARY SUCTION BOXES IN SUCH A MANNER THAT SAID AIR PERMEABLE MIDDLE PORTION IS SITUATED ON SAID CORRUGATED COVER OF SAID CORRUGATING SUCTION BOX, WHEREAS SAID AIR IMPERMEABLE END PORTIONS ARE SITUATED ON SAID PLAIN SURFACE COVERS OF SAID AUXILIARY SUCTION BOXES WITH PARTS OF SAID IMPERMEABLE END PORTIONS AND PROJECTING BEYOND SAID AUXILIARY SUCTION BOXES, AND TENSION MEMBERS SECURED TO SAID AIR IMPERMEABLE END PORTIONS OF SAID FLEXIBLE LAYER AND EXERTING A PREDETERMINED AMOUNT OF PULL THEREON.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |