US3602549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal-mining machine
Assignee: Gebr Eickhoff Maschinenfabrik u Eisengiesserei GmbH
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Filing: 1970-02-18
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Granted: 1971-08-31
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Expires: 1990-02-18
Abstract
Abstract A coal mining machine movable between the coal seam and a conveyor, which by means of mining tools cuts the coal seam in front of the machine and which by means of a driving sprocket wheel engages a chain substantially parallel to the conveyor while a guiding rail is provided adjacent the mining machine which guiding rail has an inner substantially cylindrical surface with a longitudinal slot having a width at least wide enough to permit insertion of a chain into the guiding rail, said chain being located within the guiding rail which latter positively guides guiding members embracing said chain and connected to the mining machine.
Inventors
- 👤 Otto Renzing
- 👤 Klaus Oberste-Beulmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:58
CPC Classifications
E; E21; E21C; E21C29/00; E21C29/04; E21C29/14; E21C35/00; E21C35/08; E21C35/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
122 words
A guiding arrangement for a mining machine having a chain driving sprocket wheel, especially coal mining machine, which includes: guiding rail means, chain means operable by said sprocket wheel and movably arranged within and extending in the longitudinal direction of said rail means, said guiding rail means having an inner substantially cylindrical surface and having its upper portion provided with slot means extending in the longitudinal direction of said rail means and having a width at least wide enough to permit the introduction of said chain means through said slot means into said rail means, and hollow guiding means slidably arranged within said guiding rail means and connectable to said mining machine, said hollow guiding means embracing portions of said chain means.
Claim 2
Dependent Claim
122 words
A guiding arrangement for a mining machine having a chain driving sprocket wheel, especially coal mining machine, which includes: guiding rail means, chain means operable by said sprocket wheel and movably arranged within and extending in the longitudinal direction of said rail means, said guiding rail means having an inner substantially cylindrical surface and having its upper portion provided with slot means extending in the longitudinal direction of said rail means and having a width at least wide enough to permit the introduction of said chain means through said slot means into said rail means, and hollow guiding means slidably arranged within said guiding rail means and connectable to said mining machine, said hollow guiding means embracing portions of said chain means.
Claim 3
Dependent Claim
27 words
A guiding arrangement according to claim 1, in which said hollow guiding means is pivotally connected to said mining machine for pivoting about a substantially horizontal axis.
Claim 4
Dependent Claim
18 words
A guiding arrangement according to claim 1, iN which said hollow guiding means comprises two hollow guiding members.
Claim 5
Dependent Claim
26 words
A guiding arrangement according to claim 1, in which the end portions of said hollow guiding means are provided with noses for guiding said chain means.
Claim 6
Dependent Claim
86 words
A guiding arrangement according to claim 1, which includes additional guiding rail means provided on that portion of the mining machine which is adjacent to the filling side of the mining machine, a guiding member guided on said additional guiding rail means, conveyor means, gantry means located above said conveyor means, elbow means together with said gantry means connecting said guiding member to the machine so that said guiding member will be able to follow a pivoting movement of the machine about said guiding rail means.
Claim 7
Dependent Claim
45 words
A guiding arrangement according to claim 1, in which the profile of said guiding rail means embracing said hollow guiding means comprises a plurality of individual relatively short sections spaced from each other by a distance less than the length of said hollow guiding means.
Claim 8
Dependent Claim
60 words
A guiding arrangement according to claim 1, which includes conveyor means associated with said mining machine and skids arranged at the respective lowermost cutting level of the machine and having rolling surfaces following the contour of a circular segment, said skids being pivotable about an axis parallel to said conveyor means and eccentrically located with regard to said circular segment.
Claim 9
Dependent Claim
66 words
A guiding arrangement according to claim 7, which includes fluid pressure operable cylinder piston means associated with said skids and extending in a direction transverse to the driving direction of the machine, the cylinder bottom of said cylinder piston means which face said conveyor means being located at a level higher than the point of attack of the piston rods connected to said cylinder piston means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |