US4229043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cowl arrangements for mining machines
Assignee: Coal Industry Patents Ltd
•
Filing: 1978-10-24
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Granted: 1980-10-21
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Expires: 1998-10-24
Abstract
Abstract A roll of wire mesh is supported on the rear of a cut mineral loading cowl of a rock or mineral winning machine. As the machine traverses along a path cut by the machine the wire mesh is paid out to retain or contain the roof material.
Inventors
- 👤 Roy L. Bell
- 👤 James B. Garner
- 👤 Douglas Salmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:35
CPC Classifications
E; E21; E21D; E21D23/00; E21D23/04; E21D23/0454; E21D19/00; E21D19/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
93 words
A cut mineral loading arrangement for a mining machine which includes a cutter head and which in use traverses along a path cut by the machine, comprising a cut mineral loading member mountable adjacent to the rear of the cutter head which in association with said loading member urges cut mineral towards conveyor means, and a bracket which is at least partly pivotally supported with respect to said loading member for paying out an elongated element extending along the cut path, the elongated element being arrangeable to retain or contain mine roof material.
Claim 2
Dependent Claim
93 words
A cut mineral loading arrangement for a mining machine which includes a cutter head and which in use traverses along a path cut by the machine, comprising a cut mineral loading member mountable adjacent to the rear of the cutter head which in association with said loading member urges cut mineral towards conveyor means, and a bracket which is at least partly pivotally supported with respect to said loading member for paying out an elongated element extending along the cut path, the elongated element being arrangeable to retain or contain mine roof material.
Claim 3
Dependent Claim
24 words
An arrangement as claimed in claim 1, in which the loading member has ribs on its remote face and the bracket engages the ribs.
Claim 4
Dependent Claim
30 words
An arrangement as claimed in claim 1, in which the bracket comprises a first part securable to the loading member and a second part slidably engagable with the first part.
Claim 5
Dependent Claim
19 words
An arrangement as claimed in claim 1, in which the means comprises a spindle detachably securable to the bracket.
Claim 6
Dependent Claim
24 words
An arrangement as claimed in claim 4 in which the elongated element for rataining or containing the roof material is supported on the spindle.
Claim 7
Dependent Claim
27 words
An arrangement as claimed in claim 5, in which the elongated element comprises a wire mesh roll with the spindle positioned along the axis of the roll.
References Cited (Backward Citations)
US3291533A
Cited
US3397927A
Cited
US4099785A
Cited
US4068894A
Cited
US4122682A
Cited
DE2655511A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-21 | 1984-04-21 | 1984-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-21 | 1988-04-21 | 1988-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-21 | 1992-04-21 | 1992-10-21 | $7700.00 | Window Closed / Lapsed |