Patent US3872677A successfully refreshed from Google Patents.
US3872677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mineral mining installations
Assignee: Gewerkschaft Eisenhutte Westfalia GmbH
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Filing: 1973-04-10
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Granted: 1975-03-25
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Expires: 1993-04-10
Abstract
Abstract A mineral mining installation composed of a scraper chain conveyor with a drive station, particularly an auxiliary drive station, at one end and a series of movable roof support chocks arranged along the goaf side of the conveyor. Three additional chocks, each having two telescopic props, are disposed around the end and side of the drive station. These chocks have roof caps and cantilevered roof bars which project over the drive station and shields which protect the drive station from the goaf and gallery zones. Two of the three chocks are disposed at the goaf side and gallery end of the station and these chocks are connected to the drive station with joints which permit vertical swinging but restrict horizontal swinging. The other of the three chocks is disposed at the goaf side of the chock at the end of the drive station and these chocks are interconnected by a shifting ram and a guide beam.
Inventors
- 👤 Horst Linke
- 👤 Bernard Holtrup
- 👤 Herbert Beyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:10
CPC Classifications
E; E21; E21F; E21F13/00; E21F13/10
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
136 words
A mineral mining installation comprising: a. a scraper-chain conveyor; b. a drive station for the conveyor located at one end of the conveyor, said drive station having a frame with a rotatable drum and means for driving said drum; c. a series of movable roof support chocks disposed along the goaf side of the conveyor; d. a first roof support chock disposed at the goaf side of the frame; e. means for connecting said first chock to said frame; f. a second roof support chock disposed at the end of said frame; g. means for connecting said second chock to said frame; h. a further chock disposed at the goaf side of the second chock; i. shifting means connected between the second and further chocks; and j. guide means connected between the second and further chocks.
Claim 2
Dependent Claim
136 words
A mineral mining installation comprising: a. a scraper-chain conveyor; b. a drive station for the conveyor located at one end of the conveyor, said drive station having a frame with a rotatable drum and means for driving said drum; c. a series of movable roof support chocks disposed along the goaf side of the conveyor; d. a first roof support chock disposed at the goaf side of the frame; e. means for connecting said first chock to said frame; f. a second roof support chock disposed at the end of said frame; g. means for connecting said second chock to said frame; h. a further chock disposed at the goaf side of the second chock; i. shifting means connected between the second and further chocks; and j. guide means connected between the second and further chocks.
Claim 3
Dependent Claim
46 words
An installation according to claim 1, wherein the means for connecting the second chock to the frame is in the form of joints permitting relative vertical movement between the frame and the second chock while restricting relative horizontal movement between the frame and the second chock.
Claim 4
Dependent Claim
66 words
An installation according to claim 1, wherein the means for connecting the first chock to the frame is in the form of a connecting plate disposed between the first chock and the frame, and joints linking the plate to the frame and to the first chock, said joints permitting vertical movement between the plate and the frame and the first chock and restricting horizontal movement therebetween.
Claim 5
Dependent Claim
46 words
An installation according to claim 3, wherein the means for connecting the second chock to the frame is in the form of joints permitting relative vertical movement between the frame and the second chock while restricting relative horizontal movement between the frame and the second chock.
Claim 6
Dependent Claim
16 words
An installation according to claim 4, wherein said connecting plate is substantially U-shaped in plan view.
Claim 7
Dependent Claim
42 words
An installation according to claim 4, wherein the first chock has two telescopic props and the driving means is in the form of a motor located between the props of said first chock and a gearing unit located above said connecting plate.
Claim 8
Dependent Claim
21 words
An installation according to claim 1, wherein each of the first, second and further chocks is provided with two telescopic props.
Claim 9
Dependent Claim
46 words
An installation according to claim 1, wherein the guide means is a beam extending in a direction laterally of the conveyor, said beam being slidably guided on one of the second and further chocks and rigidly connected to the other of said second and further chocks.
Claim 10
Dependent Claim
31 words
An installation according to claim 1, wherein the shifting means is a ram connected between the second and further chocks and arranged to extend in a direction laterally of the conveyor.
Claim 11
Dependent Claim
23 words
An installation according to claim 1, wherein the first chock is provided with a goaf screen which is substantially U-shaped in plan view.
Claim 12
Dependent Claim
31 words
An installation according to claim 1, wherein each of the second and further chocks is provided with a shield disposed on the side of the chock remote from the drive station.
Claim 13
Dependent Claim
23 words
An installation according to claim 1, wherein each of the first, second and further chocks has a roof cap which is substantially rectangular.
Claim 14
Dependent Claim
30 words
An installation according to claim 12, wherein cantilevered roof bars are connected to the roof cap of the first chock; said bars projecting inwardly towards the conveyor and laterally thereof.
Claim 15
Dependent Claim
30 words
An installation according to claim 12, wherein cantilevered roof bars are connected to the roof cap of the second chock; said bars projecting inwardly towards the conveyor and longitudinally thereof.
Claim 16
Dependent Claim
29 words
An installation according to claim 1, wherein each of said series of chocks is connected to the conveyor by means of a shifting ram directed laterally of the conveyor.
Claim 17
Dependent Claim
40 words
An installation according to claim 15, wherein the endmost of said series oF chocks which is adjacent said first chock is provided with an additional shifting ram connected between the chock and the conveyor and directed laterally of the 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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |