US2707803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Moulds for thermoplastic materials
Assignee: Telegraph Construction and Maintenance Co Ltd
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Filing: 1951-11-08
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Granted: 1955-05-10
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Expires: 1971-11-08
Abstract
No abstract record available.
Inventors
- 👤 Thorne Beryl Freda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:40
CPC Classifications
B; B29; B29C; B29C45/00; B29C45/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A MOULD DEVICE FOR MAKING A WELDED JOINT OF THERMOPLASTIC MATERIAL COMPRISING A RELATIVELY STATIONARY MOULD HOUSING, AN INNER MOULD ELEMENT FOR ENCLOSING AN ARTICLE TO WHICH THE WELD OF THERMOPLASTIC MATERIAL IS TO BE MADE, SAID MOULD HOUSING HAVING AN INNER CHAMBER WITHIN WHICH THE MOULD ELEMENT IS MOUNTED TO REVOLVE, ENTRANT PORTS BOTH IN THE MOULD HOUSING AND MOULD ELEMENT BY WHICH A HEATING FLUID CAN BE ADMITTED BOTH TO THE INTERIOR OF THE MOULD ELEMENT AND THE CHAMBER WITHIN WHICH IT REVOLVES, AND MEANS FOR ROTATING THE MOULD ELEMENT TO VARY THE POINT OF ENTRY OF THE HEATING FLUID THEREINTO.
Claim 2
Dependent Claim
103 words
A MOULD DEVICE FOR MAKING A WELDED JOINT OF THERMOPLASTIC MATERIAL COMPRISING A RELATIVELY STATIONARY MOULD HOUSING, AN INNER MOULD ELEMENT FOR ENCLOSING AN ARTICLE TO WHICH THE WELD OF THERMOPLASTIC MATERIAL IS TO BE MADE, SAID MOULD HOUSING HAVING AN INNER CHAMBER WITHIN WHICH THE MOULD ELEMENT IS MOUNTED TO REVOLVE, ENTRANT PORTS BOTH IN THE MOULD HOUSING AND MOULD ELEMENT BY WHICH A HEATING FLUID CAN BE ADMITTED BOTH TO THE INTERIOR OF THE MOULD ELEMENT AND THE CHAMBER WITHIN WHICH IT REVOLVES, AND MEANS FOR ROTATING THE MOULD ELEMENT TO VARY THE POINT OF ENTRY OF THE HEATING FLUID THEREINTO.
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) | 1958-05-09 | 1958-11-08 | 1959-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-09 | 1962-11-08 | 1963-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-09 | 1966-11-08 | 1967-05-10 | $7700.00 | Window Closed / Lapsed |