Patent US3298566A successfully refreshed from Google Patents.
Patent US3578807A successfully refreshed from Google Patents.
US3578807A
Expired / Lapsed
US
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Method of steering
Assignee: IC GROUP Inc A CORP OF DE
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Filing: 1968-11-05
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Granted: 1971-05-18
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Expires: 1988-11-05
Abstract
Abstract A method of maintaining a desired distance between a steerable earth strata mining means and a laterally adjacent bore. A signal-reflecting means is placed at a known location along the bore. The mining means includes means to emit signals toward the reflecting means and another means to receive a portion of the original signal which is reflected by the reflecting means. The mining means is steered in response to the reflected signal received by the receiving means.
Inventors
- 👤 Arthur Lee Barrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:52
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/302; Y; Y10; Y10S; Y10S261/00; Y10S261/54
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
110 words
A method of maintaining a desired distance between a steerable earth strata mining means and a laterally adjacent passageway comprising: placing sIgnal reflecting means at a known location in a first passageway formed in an earth strata; advancing a mining means into said earth strata adjacent and spaced from said first passageway; emitting signals having at least a component directed toward said reflecting means with at least a portion thereof being reflected by said reflecting means; sensing at least a portion of said reflected portion at a known location with respect to said mining means; and controlling the subsequent coarse of said mining means in response to such sensed portion.
Claim 2
Independent Claim
110 words
A method of maintaining a desired distance between a steerable earth strata mining means and a laterally adjacent passageway comprising: placing sIgnal reflecting means at a known location in a first passageway formed in an earth strata; advancing a mining means into said earth strata adjacent and spaced from said first passageway; emitting signals having at least a component directed toward said reflecting means with at least a portion thereof being reflected by said reflecting means; sensing at least a portion of said reflected portion at a known location with respect to said mining means; and controlling the subsequent coarse of said mining means in response to such sensed portion.
Claim 3
Dependent Claim
22 words
A method as set forth in claim 1 wherein said emitting is of radioactive radiation and said sensing is of radioactive radiation.
Claim 4
Dependent Claim
18 words
A method as set forth in claim 1 wherein said placing is during formation of said first passageway.
Claim 5
Dependent Claim
24 words
A method as set forth in claim 1 wherein said sensing is of the intensity of at least a portion of said reflected portion.
Claim 6
Dependent Claim
44 words
A method as set forth in claim 1 wherein said placing of signal reflecting means is along a wall of said first passageway; said emitting is by means carried by said mining means; and said sensing is by means carried by said mining means.
Claim 7
Independent Claim
107 words
A method of maintaining a desired distance between steerable earth strata mining means and a laterally adjacent passageway, comprising: placing a signal-emitting means at a known location in a first passageway formed in an earth strata; advancing a mining means into said earth strata adjacent and spaced from said first passageway; emitting from said signal-emitting means signals having at least a portion directed towards the path of advance of said mining means; sensing at least a portion of said emitted signal portion at a known location with respect to said mining means; and controlling the subsequent course of said mining means in response to such sensed portion.
Claim 8
Independent Claim
107 words
A method of maintaining a desired distance between steerable earth strata mining means and a laterally adjacent passageway, comprising: placing a signal-emitting means at a known location in a first passageway formed in an earth strata; advancing a mining means into said earth strata adjacent and spaced from said first passageway; emitting from said signal-emitting means signals having at least a portion directed towards the path of advance of said mining means; sensing at least a portion of said emitted signal portion at a known location with respect to said mining means; and controlling the subsequent course of said mining means in response to such sensed portion.
Claim 9
Dependent Claim
22 words
A method as set forth in claim 6 wherein said emitting is of radioactive radiation and said sensing is of radioactive radiation.
Claim 10
Dependent Claim
18 words
A method as set forth in claim 6 wherein said placing is during formation of said first passageway.
Claim 11
Dependent Claim
24 words
A method as set forth in claim 6 wherein said sensing is of the intensity of at least a portion of said emitted portion.
Claim 12
Dependent Claim
34 words
A method as set forth in claim 6 wherein said placing of said radiation emitting means is along a wall of said passageway; and said sensing in by means carried by said mining means.
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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |