US3372553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unit for driving tunnels in loose ground
Assignee: NAUCHNO-ISSLEDOVATELSKY INSTITUTE OSNOVANY I PADZEMNYKH SOORUZHENY
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Filing: 1964-05-12
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Granted: 1968-03-12
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Expires: 1984-05-12
Abstract
No abstract record available.
Inventors
- 👤 Samoilov Vladimir Pavlovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:24
CPC Classifications
E; E21; E21D; E21D9/00; E21D9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
AN APPARATUS FOR DRIVING TUNNELS IN LOOSE SOIL AND GROUND INCLUDING A SHIELD HAVING A FACE END, A CUTTING RING FOR THE FACE END, AT LEAST ONE HORIZONTALLY DISPOSED FRONT RIGID SHARP-EDGED MEMBER AND A CONVEYOR EXTENDING ACROSS THE WIDTH OF, ABUTTING AND OPERABLY RELATED TO SAID MEMBER AND CONSTITUTING THEREWITH A HORIZONTAL COMPONENT, SAID CONVEYOR INCLUDING DRIVING AND DRIVEN DRUMS AND A BELT TRAINED ABOUT SAID DRUMS, A DRIVE MEMBER EXTENDING AXIALLY OF THE SHIELD REMAINING STATIONARY DURING ADVANCE OF THE SHIELD, A GEARBOX ATTACHED TO THE SHIELD FOR ADJUSTING THE SPEED OF THE CONVEYOR, MEANS DRIVINGLY CONNECTING THE GEARBOX TO THE DRIVE MEMBER, A SHAFT DRIVEN BY THE GEARBOX, A SHAFT FOR SAID DRIVING DRUM, COUPLING MEANS BETWEEN SAID SHAFTS PERMITTING ROTATION ONLY IN ONE DIRECTION FOR COORDINATING THE RATE OF ADVANCE OF THE SHIELD AND OF CONVEYOR BELT, A CLUTCH FOR THE DRIVING DRUM SHAFT ADAPTED TO TRANSMIT A DRIVE BETWEEN THE DRIVEN SHAFT OF THE GEARBOX AND THE DRIVING DRUM SHAFT, A LONGITUDINALLY MOVABLE TRANSFER CONVEYOR WITHIN THE SHIELD BEHIND THE HORIZONTAL COMPONENT AND MEANS FOR SELECTIVELY LOADING MUCK BEHIND THE COMPONENT ONTO THE TRANSFER CONVEYOR.
Claim 2
Independent Claim
190 words
AN APPARATUS FOR DRIVING TUNNELS IN LOOSE SOIL AND GROUND INCLUDING A SHIELD HAVING A FACE END, A CUTTING RING FOR THE FACE END, AT LEAST ONE HORIZONTALLY DISPOSED FRONT RIGID SHARP-EDGED MEMBER AND A CONVEYOR EXTENDING ACROSS THE WIDTH OF, ABUTTING AND OPERABLY RELATED TO SAID MEMBER AND CONSTITUTING THEREWITH A HORIZONTAL COMPONENT, SAID CONVEYOR INCLUDING DRIVING AND DRIVEN DRUMS AND A BELT TRAINED ABOUT SAID DRUMS, A DRIVE MEMBER EXTENDING AXIALLY OF THE SHIELD REMAINING STATIONARY DURING ADVANCE OF THE SHIELD, A GEARBOX ATTACHED TO THE SHIELD FOR ADJUSTING THE SPEED OF THE CONVEYOR, MEANS DRIVINGLY CONNECTING THE GEARBOX TO THE DRIVE MEMBER, A SHAFT DRIVEN BY THE GEARBOX, A SHAFT FOR SAID DRIVING DRUM, COUPLING MEANS BETWEEN SAID SHAFTS PERMITTING ROTATION ONLY IN ONE DIRECTION FOR COORDINATING THE RATE OF ADVANCE OF THE SHIELD AND OF CONVEYOR BELT, A CLUTCH FOR THE DRIVING DRUM SHAFT ADAPTED TO TRANSMIT A DRIVE BETWEEN THE DRIVEN SHAFT OF THE GEARBOX AND THE DRIVING DRUM SHAFT, A LONGITUDINALLY MOVABLE TRANSFER CONVEYOR WITHIN THE SHIELD BEHIND THE HORIZONTAL COMPONENT AND MEANS FOR SELECTIVELY LOADING MUCK BEHIND THE COMPONENT ONTO THE TRANSFER CONVEYOR.
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) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |