US3887235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Assembly for hydraulic extraction of sheet-like mineral deposits sectioned into panels by a system of passageways
Assignee: Rheinstahl AG
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Filing: 1974-02-11
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Granted: 1975-06-03
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Expires: 1994-02-11
Abstract
Abstract The assembly has a supporting structure for high pressure hydraulic nozzles, the supporting structure including a single shield-like structural member, having a channel cross-section open toward the working face, and which is rigid against bending and extends, parallel to the working face, between two roadways. Winch drag means extend along the two roadways and act on respective opposite end portions of the structural member to move the latter in the direction of advance of the workings. High pressure nozzles are mounted on the flange edge portions of the supporting structure projecting toward the working face, being positioned at fixed locations and being adjustable perpendicularly to their discharge axes. Alternatively, a carrier mounting the high pressure nozzles is movable longitudinally of the supporting structure to travel parallel to and along the entire length of the working face. The supporting structure is inclined in the backward direction, toward the old works, for permitting the caving-in roof to slide down toward the old works. The supporting structure also is divided longitudinally into a roof portion and a base portion, the two portions being adjustable relative to each other. Conveyors extending along the roadways receive the dislodged portions of the mineral deposit, such as coal, and convey the same to a collecting area. The supporting structure furthermore may be designed as a conveying trough discharging into the conveyors.
Inventors
- 👤 Manfred Koppers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:43
CPC Classifications
E; E21; E21C; E21C25/00; E21C25/60
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
175 words
In an assembly for hydraulic extraction of a sheet-like mineral deposit, which has been sectioned by a system of passageways into panels limited laterally by roadways extending parallel To the direction of advance of the workings, by a hydromechanically operating device including at least one high pressure hydraulic nozzle mounted on a supporting structure and adapted to dislodge the working face of the deposit, extending between the roadways, by a high pressure jet of hydraulic fluid; the improvement comprising, in combination, said supporting structure including a single rectilinear shield-like structural member, having a channel cross-section open toward said working face, and which is rigid longitudinally against bending and extends, parallel to said working face, between two roadways; drag means extending along the two roadways and acting on respective opposite end portions of said structural member to move the latter in said direction of advance; and a plurality of high pressure hydraulic nozzles movably mounted on said structural member for discharging high pressure jets of hydraulic fluid against said working face over the entire length thereof.
Claim 2
Dependent Claim
175 words
In an assembly for hydraulic extraction of a sheet-like mineral deposit, which has been sectioned by a system of passageways into panels limited laterally by roadways extending parallel To the direction of advance of the workings, by a hydromechanically operating device including at least one high pressure hydraulic nozzle mounted on a supporting structure and adapted to dislodge the working face of the deposit, extending between the roadways, by a high pressure jet of hydraulic fluid; the improvement comprising, in combination, said supporting structure including a single rectilinear shield-like structural member, having a channel cross-section open toward said working face, and which is rigid longitudinally against bending and extends, parallel to said working face, between two roadways; drag means extending along the two roadways and acting on respective opposite end portions of said structural member to move the latter in said direction of advance; and a plurality of high pressure hydraulic nozzles movably mounted on said structural member for discharging high pressure jets of hydraulic fluid against said working face over the entire length thereof.
Claim 3
Dependent Claim
175 words
In an assembly for hydraulic extraction of a sheet-like mineral deposit, which has been sectioned by a system of passageways into panels limited laterally by roadways extending parallel To the direction of advance of the workings, by a hydromechanically operating device including at least one high pressure hydraulic nozzle mounted on a supporting structure and adapted to dislodge the working face of the deposit, extending between the roadways, by a high pressure jet of hydraulic fluid; the improvement comprising, in combination, said supporting structure including a single rectilinear shield-like structural member, having a channel cross-section open toward said working face, and which is rigid longitudinally against bending and extends, parallel to said working face, between two roadways; drag means extending along the two roadways and acting on respective opposite end portions of said structural member to move the latter in said direction of advance; and a plurality of high pressure hydraulic nozzles movably mounted on said structural member for discharging high pressure jets of hydraulic fluid against said working face over the entire length thereof.
Claim 4
Dependent Claim
175 words
In an assembly for hydraulic extraction of a sheet-like mineral deposit, which has been sectioned by a system of passageways into panels limited laterally by roadways extending parallel To the direction of advance of the workings, by a hydromechanically operating device including at least one high pressure hydraulic nozzle mounted on a supporting structure and adapted to dislodge the working face of the deposit, extending between the roadways, by a high pressure jet of hydraulic fluid; the improvement comprising, in combination, said supporting structure including a single rectilinear shield-like structural member, having a channel cross-section open toward said working face, and which is rigid longitudinally against bending and extends, parallel to said working face, between two roadways; drag means extending along the two roadways and acting on respective opposite end portions of said structural member to move the latter in said direction of advance; and a plurality of high pressure hydraulic nozzles movably mounted on said structural member for discharging high pressure jets of hydraulic fluid against said working face over the entire length thereof.
Claim 5
Dependent Claim
44 words
In an assembly for hydraulic extraction, the improvement claimed in claim 1, in which the upper flange of said channel cross-section structural member is inclined downwardly and rearwardly of said direction of advance to permit the caving-in roof to slide downwardly and rearwardly therealong.
Claim 6
Dependent Claim
27 words
In an assembly for hydraulic extraction, the improvement claimed in claim 1, in which said nozzles are sequentially operable in groups each including at least one nozzle.
Claim 7
Dependent Claim
64 words
In an assembly for hydraulic extraction, the improvement claimed in claim 1, including an echo sounding device operable to measure the distance between said structural member and respective fixed points in each of said two roadways; and means operable, as a function of the measured values, to control the operation of said drag means in moving said structural member in said direction of advance.
Claim 8
Dependent Claim
48 words
In an assembly for hydraulic extraction, the improvement claimed in claim 1, in which said high pressure nozzles are mounted at fixed locations on the flange edge portions of said supporting structure projecting toward said working face and are distributed along the entire length of said working face.
Claim 9
Dependent Claim
26 words
In an assembly for hydraulic extraction, the improvement claimed in claim 5, in which said nozzles are displaceable in all directions perpendicular to their central axes.
Claim 10
Dependent Claim
51 words
In an assembly for hydraulic extraction, the improvement claimed in claim 1, in which said structural member is divided, at its mid height, along a longitudinal parting line, into an upper part and a lower part; and means providing for movement of said upper and lower parts relative to each other.
Claim 11
Dependent Claim
30 words
In an assembly for hydraulic extraction, the improvement claimed in claim 7, including means pivotally interconnecting said upper and lower parts at said parting line for relative angular adjustment thereof.
Claim 12
Dependent Claim
48 words
In an assembly for hydraulic extraction, the improvememt claimed in claim 7, in which said upper part has a longitudinally extending channel-shaped groove embracing a longitudinally extending and upwardly projecting portion of said lower part; and means operable to displace said upper part relative to said lower part.
Claim 13
Dependent Claim
78 words
In an assembly for hydraulic extraction, the improvement claimed in claim 7, in which said structural member has end portions projecting into said roadways; each end portion of at least the upper part of said structural member having a skid-like projecting arm articulated to a supporting leg engaging the floor of the associated roadway; and actuator means interconnecting said projecting arm and said supporting leg and operable to pivot said structural member about an axis extending longitudinally thereof.
Claim 14
Dependent Claim
41 words
In an assembly for hydraulic extraction, the improvement claimed in claim 1, including a device mounting said high pressure nozzles; and means mounting said device on said supporting structure for traveling therealong parallel to the entire length of said working face.
Claim 15
Dependent Claim
22 words
In an assembly for hydraulic extracTion, the improvement claimed in claim 11, in which said device comprises a hydromechanically acting planer head.
Claim 16
Dependent Claim
44 words
In an assembly for hydraulic extraction, the improvement claimed in claim 12, in which said planer head is projectable into a recess of the mineral deposit seam; and additional nozzles mounted on said planer head and having discharge directions parallel to said working face.
Claim 17
Dependent Claim
70 words
In an assembly for hydraulic extraction, the improvement claimed in claim 12, in which said planer head is channel-shaped including a lower flange extending in the zone of the floor and an upper flange extending in the zone of the roof; said flanges being equipped with respective adjustable nozzles directed parallel, respectively, to the floor and to the roof and directed, respectively, perpendicular to the floor and to the roof.
Claim 18
Dependent Claim
30 words
In an assembly for hydraulic extraction, the improvement claimed in claim 12, in which the lower part of said structural member is formed with a conveying trough extending longitudinally thereof.
Claim 19
Dependent Claim
61 words
In an assembly for hydraulic extraction, the improvement claimed in claim 15, including nozzles mounted on that portion of said planer head extending above said conveying trough and discharging obliquely toward said conveying trough for conveying the removed material by flushing it along said conveying trough toward said roadways; and respective conveyors extending along said roadways and receiving the removed material.
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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |