US3176370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compaction apparatus
Assignee: United States Concrete Pipe Co
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Filing: 1964-05-11
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Granted: 1965-04-06
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Expires: 1984-05-11
Abstract
No abstract record available.
Inventors
- 👤 Wylie M Lafferty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:02
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/02; B28B21/10; B28B21/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
IN APPARATUS FOR MANUFACTURING BELL AND SPIGOT TAMPED CONCRETE PIPE, INCLUDING A STATIONARY CORE, A CROSSMEMBER SUPPORTING THE CORE, A ROTATABLE OUTER FROM HAVING A TOP EDGE AND A LATERAL BELL PACKET SECURED TO SAID CORE AND HAVING SIDE AND BOTTOM WALLS ADAPTED TO FORM THE INSIDE WALL AND SHOULDER OF THE BELL END OF A PIPE SECTION, THE IMPROVEMENT OF A VERTICAL BELL PACKER FOR COMPACTING THE CONCRETE VERTICALLY, LATERALLY OUTWARDLY OF SAID INSIDE WALL, SAID VERTICAL BELL PACKER COMPRISING A BASE PLATE, A MOTOR MOUNTED ON SAID BASE PLATE, SUPPORT MEANS MOUNTED ON SAID MOTOR AND ADAPTED TO BE ACUTATED THEREBY, A ROLLER MEANS CARRIED BY SAID SUPPORT MEANS AND HAVING AN EDGE ADAPTED TO ENGAGE UPON SAID TOP OF SAID OUTER FORM AND TO BE DRIVEN BY ENGAGEMENT THEREWITH WHEN SAID OUTER FROM IS ROTATED, SECOND ROLLER MEANS CARRIED BY SAID SUPPORT MEANS HAVING AN EDGE OF GREATER DIAMETER THAN SAID FIRST ROLLER MEANS FOR COMPACTING THE
Claim 2
Dependent Claim
160 words
IN APPARATUS FOR MANUFACTURING BELL AND SPIGOT TAMPED CONCRETE PIPE, INCLUDING A STATIONARY CORE, A CROSSMEMBER SUPPORTING THE CORE, A ROTATABLE OUTER FROM HAVING A TOP EDGE AND A LATERAL BELL PACKET SECURED TO SAID CORE AND HAVING SIDE AND BOTTOM WALLS ADAPTED TO FORM THE INSIDE WALL AND SHOULDER OF THE BELL END OF A PIPE SECTION, THE IMPROVEMENT OF A VERTICAL BELL PACKER FOR COMPACTING THE CONCRETE VERTICALLY, LATERALLY OUTWARDLY OF SAID INSIDE WALL, SAID VERTICAL BELL PACKER COMPRISING A BASE PLATE, A MOTOR MOUNTED ON SAID BASE PLATE, SUPPORT MEANS MOUNTED ON SAID MOTOR AND ADAPTED TO BE ACUTATED THEREBY, A ROLLER MEANS CARRIED BY SAID SUPPORT MEANS AND HAVING AN EDGE ADAPTED TO ENGAGE UPON SAID TOP OF SAID OUTER FORM AND TO BE DRIVEN BY ENGAGEMENT THEREWITH WHEN SAID OUTER FROM IS ROTATED, SECOND ROLLER MEANS CARRIED BY SAID SUPPORT MEANS HAVING AN EDGE OF GREATER DIAMETER THAN SAID FIRST ROLLER MEANS FOR COMPACTING THE
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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |