US3232062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunnel-lining machines
Assignee: Economic Foundations Ltd
•
Filing: 1962-09-14
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Granted: 1966-02-01
•
Expires: 1982-09-14
Abstract
No abstract record available.
Inventors
- 👤 Bland John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:49
CPC Classifications
E; E21; E21D; E21D19/00; E21D19/04; E21D11/00; E21D11/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A TUNNEL-LINING MACHINE HAVING A GENERALLY UPRIGHT ANNULAR CARRIER, STRUCTURE TO MOUNT THE CARRIER BOTH FOR ROTATION ABOUT A GENERALLY HORIZONTAL AXIS AND FOR AXIAL MOVEMENT, MEANS EXTENDING APPROXIMATELY PERIPHERALLY AND AXIALLY OF THE CARRIER TO SUPPORT A PREFORMED TUNNELLINING SEGMENT TO BE LOADED ONTO THE CARRIER, MEANS CLOSER TO THE PERIPHERY OF THE CARRIER THAN SAID AXIS FOR
Claim 2
Dependent Claim
59 words
A TUNNEL-LINING MACHINE HAVING A GENERALLY UPRIGHT ANNULAR CARRIER, STRUCTURE TO MOUNT THE CARRIER BOTH FOR ROTATION ABOUT A GENERALLY HORIZONTAL AXIS AND FOR AXIAL MOVEMENT, MEANS EXTENDING APPROXIMATELY PERIPHERALLY AND AXIALLY OF THE CARRIER TO SUPPORT A PREFORMED TUNNELLINING SEGMENT TO BE LOADED ONTO THE CARRIER, MEANS CLOSER TO THE PERIPHERY OF THE CARRIER THAN SAID AXIS FOR
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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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |