Patent US3094942A successfully refreshed from Google Patents.
US3094942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for transporting pipe sections in tunnels and like excavations
Assignee: Rheinstahl Union Brueckenbau AG
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Filing: 1961-08-03
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Granted: 1963-06-25
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Expires: 1981-08-03
Abstract
No abstract record available.
Inventors
- 👤 Blumel Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:33
CPC Classifications
E; E21; E21D; E21D11/00; E21D11/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
AN APPARATUS FOR TRANSPORTING PIPES THROUGH TUNNELS AND LIKE EXCAVATIONS WHOSE INNER SURFACES ARE CLOSE TO THE OUTER SIDES OF THE PIPES, SAID APPARATUS COMPRISING, IN COMBINATION, AT LEAST ONE SUPPORTING COMPONENT ADAPTED TO BE PLACED BENEATH THE PIPE AND HAVING WHEEL MEANS ADAPTED TO TRAVEL ALONG THE INNER SURFACE AND IN THE LONGITUDINAL DIRECTION OF THE TUNNEL; AND AT LEAST ONE GUIDING COMPONENT COMPRISING MEANS ADAPTED TO BE DETACHABLY FIXED TO A LONGITUDINAL END OF THE PIPE AND COMPRISING A PAIR OF SPACED ROLLERS ADAPTED TO ENGAGE THE INNER SURFACE OF THE TUNNEL INTERMEDIATE THE HIGHEST AND LOWEST POINTS THEREOF AT THE OPPOSITE LATERAL SIDES OF THE PIPE.
Claim 2
Independent Claim
109 words
AN APPARATUS FOR TRANSPORTING PIPES THROUGH TUNNELS AND LIKE EXCAVATIONS WHOSE INNER SURFACES ARE CLOSE TO THE OUTER SIDES OF THE PIPES, SAID APPARATUS COMPRISING, IN COMBINATION, AT LEAST ONE SUPPORTING COMPONENT ADAPTED TO BE PLACED BENEATH THE PIPE AND HAVING WHEEL MEANS ADAPTED TO TRAVEL ALONG THE INNER SURFACE AND IN THE LONGITUDINAL DIRECTION OF THE TUNNEL; AND AT LEAST ONE GUIDING COMPONENT COMPRISING MEANS ADAPTED TO BE DETACHABLY FIXED TO A LONGITUDINAL END OF THE PIPE AND COMPRISING A PAIR OF SPACED ROLLERS ADAPTED TO ENGAGE THE INNER SURFACE OF THE TUNNEL INTERMEDIATE THE HIGHEST AND LOWEST POINTS THEREOF AT THE OPPOSITE LATERAL SIDES OF THE PIPE.
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) | 1966-06-24 | 1966-12-24 | 1967-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-24 | 1970-12-24 | 1971-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-24 | 1974-12-24 | 1975-06-25 | $7700.00 | Window Closed / Lapsed |