US3155755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and process for manufacturing cement articles
Assignee: Flintkote Co
•
Filing: 1959-06-22
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Granted: 1964-11-03
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Expires: 1979-06-22
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Schulz
- 👤 Howell S Jobbins
- 👤 Amato Rafael A D
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:14
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/42; B28B21/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A PROCESS FOR PRODUCING CEMENT PRODUCTS ON A ROTATABLE CYLINDRICAL MANDREL COMPRISING THE STEPS OF APPLYING A LAYER OF DRY CEMENT TO A MOVING WET FELT IN A RANDOM UNIFORMLY DISTRIBUTED PATTERN, BRINGING THE CEMENT BEARING SURFACE OF SAID FELT INTO ENGAGEMENT WITH AT LEAST A PORTION OF THE PERIPHERAL SURFACE OF SAID MANDREL, APPLYING PRESSURE TO SAID FELT ENGAGING SAID MANDREL TO SQUEEZE WATER FROM SAID FELT INTO SAID LAYER OF DRY CEMENT, AND TRANSFERRING A PLURALITY OF LAYERS OF MOISTENED CEMENT FROM SAID FELT TO SAID MANDREL UTILIZING ONLY THE WATER IN THE WET FELT, THE QUANTITY OF WATER SQUEEZED INTO SAID DRY CEMENT BEING SUFFICIENT TO SET THE CEMENT AND LESS THAN THAT REQUIRED TO PRODUCE A SLUSHY MASS.
Claim 2
Dependent Claim
122 words
A PROCESS FOR PRODUCING CEMENT PRODUCTS ON A ROTATABLE CYLINDRICAL MANDREL COMPRISING THE STEPS OF APPLYING A LAYER OF DRY CEMENT TO A MOVING WET FELT IN A RANDOM UNIFORMLY DISTRIBUTED PATTERN, BRINGING THE CEMENT BEARING SURFACE OF SAID FELT INTO ENGAGEMENT WITH AT LEAST A PORTION OF THE PERIPHERAL SURFACE OF SAID MANDREL, APPLYING PRESSURE TO SAID FELT ENGAGING SAID MANDREL TO SQUEEZE WATER FROM SAID FELT INTO SAID LAYER OF DRY CEMENT, AND TRANSFERRING A PLURALITY OF LAYERS OF MOISTENED CEMENT FROM SAID FELT TO SAID MANDREL UTILIZING ONLY THE WATER IN THE WET FELT, THE QUANTITY OF WATER SQUEEZED INTO SAID DRY CEMENT BEING SUFFICIENT TO SET THE CEMENT AND LESS THAN THAT REQUIRED TO PRODUCE A SLUSHY MASS.
References Cited (Backward Citations)
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US2004703A
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US2200267A
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US2364061A
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US2859484A
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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) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |