Patent US770298A successfully refreshed from Google Patents.
Patent US3247675A successfully refreshed from Google Patents.
US3247675A
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US
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Segment erectors for a tunneling machine
Assignee: JAMES S ROBBINS AND ASSOCIATES Inc
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Filing: 1963-05-31
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Granted: 1966-04-26
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Expires: 1983-05-31
Abstract
No abstract record available.
Inventors
- 👤 Douglas F Winberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:25
CPC Classifications
E; E21; E21D; E21D11/00; E21D11/40; E21D11/403; E21D9/00; E21D9/06; E21D9/08; E21D9/0875; E21D9/0879; E21D9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A TUNNELING MACHINE USED IN TUNNELING OPERATIONS WHEREIN A TUNNEL LINING COMPOSED OF ABUTTING SEGMENTS IS ERECTED GENERALLY IN THE WAKE OF THE MACHINE, SAID MACHINE COMPRISING: (A) A SUPPORT MEMBER IN A TUNNEL TO BE LINED: AND (B) MEANS FOR MECHANICALLY HANDLING TUNNEL LINING SEGMENTS, SAID MEANS COMPRISING: (1) AN ELONGATED BOOM EXTENDING GENERALLY PARALLELL TO THE CENTER LINE OF THE TUNNEL, (2) MEANS MOUNTING SAID BOOM ONTO SAID SUPPORT MEMBER FOR ANGULAR MOVEMENT ABOUT SAID SUPPORT MEMBER AND ABOUT THE CENTERLINE OF THE TUNNEL, (3) GRIP MEANS CONNECTIBLE TO A SEGMENT OF THE
Claim 2
Dependent Claim
95 words
A TUNNELING MACHINE USED IN TUNNELING OPERATIONS WHEREIN A TUNNEL LINING COMPOSED OF ABUTTING SEGMENTS IS ERECTED GENERALLY IN THE WAKE OF THE MACHINE, SAID MACHINE COMPRISING: (A) A SUPPORT MEMBER IN A TUNNEL TO BE LINED: AND (B) MEANS FOR MECHANICALLY HANDLING TUNNEL LINING SEGMENTS, SAID MEANS COMPRISING: (1) AN ELONGATED BOOM EXTENDING GENERALLY PARALLELL TO THE CENTER LINE OF THE TUNNEL, (2) MEANS MOUNTING SAID BOOM ONTO SAID SUPPORT MEMBER FOR ANGULAR MOVEMENT ABOUT SAID SUPPORT MEMBER AND ABOUT THE CENTERLINE OF THE TUNNEL, (3) GRIP MEANS CONNECTIBLE TO A SEGMENT OF 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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |