US3691775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mineral mining installations
Assignee: Individual
•
Filing: 1970-06-11
•
Granted: 1972-09-19
•
Expires: 1990-06-11
Abstract
Abstract A mineral mining installation which has a mineral face conveyor arranged to transfer mineral onto a roadway conveyor supported on a trough and movable relative thereto. Roof support props are disposed on the side of the roadway conveyor adjacent the mineral face conveyor. The props are operably divided into a first set of props connected for movement with the trough and a second set of props connected for movement with the mineral face conveyor and slidably guided on a beam provided on the trough. A shifting ram connected between the trough and the second set of props is used to relatively move the trough and the mineral face conveyor.
Inventors
- 👤 Bernhard Holtrup
- 👤 Johannes Laabs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:17
CPC Classifications
E; E21; E21F; E21F13/00; E21F13/10
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
107 words
A mineral mining installation comprising: a. mineral face conveyor, b. a roadway conveyor extending generally perpendicularly to the said mineral face conveyor, c. a trough member adapted to receive the roadway conveyor and movable in relation to the roadway conveyor, d. a set of roof support props disposed on the side of the roadway conveyor adjacent the mineral face conveyor and connected to said trough member for movement therewith, e. a further set of roof support props connected to one another and to the mineral face conveyor for movement therewith, and f. shifting means for causing relative movement between the mineral face conveyor and the trough member.
Claim 2
Dependent Claim
107 words
A mineral mining installation comprising: a. mineral face conveyor, b. a roadway conveyor extending generally perpendicularly to the said mineral face conveyor, c. a trough member adapted to receive the roadway conveyor and movable in relation to the roadway conveyor, d. a set of roof support props disposed on the side of the roadway conveyor adjacent the mineral face conveyor and connected to said trough member for movement therewith, e. a further set of roof support props connected to one another and to the mineral face conveyor for movement therewith, and f. shifting means for causing relative movement between the mineral face conveyor and the trough member.
Claim 3
Dependent Claim
42 words
An installation according to claim 1, wherein the trough member is provided with a guide beam on the side thereof adjacent the mineral face conveyor, the mineral face conveyor and the further set of props being slidably guided relative to said beam.
Claim 4
Dependent Claim
27 words
An installation according to claim 2, wherein the further set of props and the mineral face conveyor have guide sleeves each of which slidably engages the beam.
Claim 5
Dependent Claim
16 words
An installation according to claim 3, wherein the sleeves are interconnected by means of connecting pieces.
Claim 6
Dependent Claim
15 words
An installation according to claim 4, wherein said connecting pieces are articulated to the sleeves.
Claim 7
Dependent Claim
53 words
An installation according to claim 2 whErein the shifting means is in the form of a hydraulically operated piston and cylinder unit mounted about the guide beam, the cylinder of said unit being connected to the further set of props and the piston rod of said unit being connected with the trough member.
Claim 8
Dependent Claim
57 words
An installation according to claim 1, wherein each prop of each set of props has a head piece for engaging the roof and the head pieces of the further set of props are displaced relative to the head pieces of the first set of props by a distance corresponding approximately to the width of each head piece.
Claim 9
Dependent Claim
57 words
An installation according to claim 1, wherein each prop of the first set of props is disposed outwardly beyond the side of the roadway conveyor adjacent the mineral face conveyor in relation to the further set of props and is displacable in a direction transversely of the trough member with the aid of an associated shifting ram.
Claim 10
Dependent Claim
32 words
An installation according to claim 1 wherein each prop of each set of props is provided with means for varying the angle of inclination of the prop in relation to the horizontal.
Claim 11
Dependent Claim
32 words
An installation according to claim 9, wherein the means for varying the angle of inclination of each of the props is in the form of a hydraulically operating piston and cylinder unit.
Claim 12
Dependent Claim
21 words
An installation according to claim 9 wherein each prop has resilient means adapted to bias the prop into a vertical position.
Claim 13
Dependent Claim
101 words
An installation according to claim 1 wherein the roadway conveyor has a fixed side place at the side thereof which faces towards the mineral face conveyor, the latter being provided with a recess into which the mineral face conveyor extends, and there is further provided additional side plates which are situated at both sides of the mineral face conveyor and extend parallel to the section of said fixed plate at either side of the mineral face conveyor to overlap said sections, said additional plates being connected to said mineral face conveyor and displaceable relative to said sections of the fixed plate.
Claim 14
Dependent Claim
25 words
An installation according to claim 12, wherein the additional plates overlap said sections by an amount greater than the full stroke of the shifting 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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |