Patent US2717435A successfully refreshed from Google Patents.
US2717435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for moulding pipes, tubes, and the like from cementitious mixes
Assignee: Listone Concrete Co Ltd
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Filing: 1951-11-30
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Granted: 1955-09-13
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Expires: 1971-11-30
Abstract
No abstract record available.
Inventors
- 👤 Livingston William David
- 👤 King Ronald Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:23
CPC Classifications
B; B28; B28B; B28B21/00; B28B21/02; B28B21/10; B28B21/14; B28B21/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A MACHINE FOR MOULDING CONCRETE PIPES, TUBES AND LIKE TUBULAR OBJECTS COMPRISING A VIBRATABLE STATIONARY CORE MEMBER, AN OUTER CASING SURROUNDING SAID CORE MEMBER AND SPACED THEREFROM TO ESTABLISH AN ANNULAR MOULDING SPACE FOR RECEIVING THE MOULDING MIX, MEANS FOR DISPLACING SAID CASING TOGETHER WITH THE MOULDED OBJECT LONGITUDINALLY IN ONE DIRECTION IN RELATION TO SAID STATIONARY CORE MEMBER TO STRIP THE OBJECT FROM SAID STATIONARY CORE MEMBER, MEANS RETAINING THE MOULDED OBJECT IN SAID DISPLACED POSITION STRIPPED FROM SAID CORE MEMBER, AND MEANS FOR THEREAFTER DISPLACING SAID CASING LONGITUDINALLY IN THE OPPOSITE DIRECTION THEREBY TO STRIP SAID CASING FROM THE MOULDED OBJECT.
Claim 2
Dependent Claim
103 words
A MACHINE FOR MOULDING CONCRETE PIPES, TUBES AND LIKE TUBULAR OBJECTS COMPRISING A VIBRATABLE STATIONARY CORE MEMBER, AN OUTER CASING SURROUNDING SAID CORE MEMBER AND SPACED THEREFROM TO ESTABLISH AN ANNULAR MOULDING SPACE FOR RECEIVING THE MOULDING MIX, MEANS FOR DISPLACING SAID CASING TOGETHER WITH THE MOULDED OBJECT LONGITUDINALLY IN ONE DIRECTION IN RELATION TO SAID STATIONARY CORE MEMBER TO STRIP THE OBJECT FROM SAID STATIONARY CORE MEMBER, MEANS RETAINING THE MOULDED OBJECT IN SAID DISPLACED POSITION STRIPPED FROM SAID CORE MEMBER, AND MEANS FOR THEREAFTER DISPLACING SAID CASING LONGITUDINALLY IN THE OPPOSITE DIRECTION THEREBY TO STRIP SAID CASING FROM THE MOULDED OBJECT.
References Cited (Backward Citations)
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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) | 1958-09-12 | 1959-03-14 | 1959-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-12 | 1963-03-14 | 1963-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-12 | 1967-03-14 | 1967-09-13 | $7700.00 | Window Closed / Lapsed |