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US3843199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for ventilating and providing dust suppression fluid to cutter-heads of mineral mining machines
Assignee: Coal Industry Patents Ltd
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Filing: 1973-04-23
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Granted: 1974-10-22
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Expires: 1993-04-23
Abstract
Abstract Apparatus for ventilating cutter heads on mineral mining machines having an axially bored driven shaft, includes a fixed adaptor which is secured to the body of the machine and which is arranged to feed relatively low pressure dust suppression fluid along a tube extending along the bore of the driven shaft towards the cutter head and to feed relative high pressure fluid to a nozzle positioned within the bore of the driven shaft so that fluid discharged from the nozzle induces an air flow along the bore of the driven shaft. Thus, the apparatus permits ventilation of the cutter head by an induced air flow and feeding of dust suppression fluid by the cutter head.
Inventors
- 👤 H Nash
- 👤 J Ewards
- 👤 C Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:09
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/22; E21C35/23
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
124 words
Apparatus for ventilating a mineral mining machine cutter head of the kind adapted to be drivably mounted on an axially bored driven shaft and provided with at least one outlet nozzle for dust suppression fluid, comprising a fixed component for fixed attachment to the machine adjacent to the end of the driven shaft remote from the cutter head, the fixed component having fluid inlet means and first and second fluid outlet means, a nozzle interconnected to the first fluid outlet means for delivering an air flow-inducing jet of fluid along the bore of the driven shaft, and a hollow elongated member connected to the second fluid outlet means for feeding dust suppression fluid along the bore of the driven shaft towardS the cutter head.
Claim 2
Dependent Claim
124 words
Apparatus for ventilating a mineral mining machine cutter head of the kind adapted to be drivably mounted on an axially bored driven shaft and provided with at least one outlet nozzle for dust suppression fluid, comprising a fixed component for fixed attachment to the machine adjacent to the end of the driven shaft remote from the cutter head, the fixed component having fluid inlet means and first and second fluid outlet means, a nozzle interconnected to the first fluid outlet means for delivering an air flow-inducing jet of fluid along the bore of the driven shaft, and a hollow elongated member connected to the second fluid outlet means for feeding dust suppression fluid along the bore of the driven shaft towardS the cutter head.
Claim 3
Dependent Claim
21 words
Apparatus as claimed in claim 1, in which the hollow elongated member is slidably and rotatably mounted on the fixed component.
Claim 4
Dependent Claim
31 words
Apparatus as claimed in claim 1 in which the said fluid inlet means comprises first and second fluid inlet means interconnected to the said first and second fluid outlet means, respectively.
Claim 5
Dependent Claim
152 words
Apparatus for ventilating a mineral mining machine cutter head of the kind adapted to be drivably mounted on an axially bored driven shaft and provided with at least one outlet nozzle for dust suppression fluid, comprising a fixed component for fixed attachment to the machine adjacent to the end of the driven shaft remote from the cutter head, the fixed component having first and second fluid inlet means and first and second fluid outlet means interconnected to the said first and second fluid inlet means, respectively, a nozzle interconnected to the first fluid outlet means for delivering an air flow-inducting jet of fluid along the bore of the driven shaft, and a hollow elongated member which is connected to the second fluid outlet means for feeding dust suppression fluid along the bore of the driven shaft towards the cutter head and which constitutes an assembly rotatable with respect to the fixed component.
Claim 6
Dependent Claim
152 words
Apparatus for ventilating a mineral mining machine cutter head of the kind adapted to be drivably mounted on an axially bored driven shaft and provided with at least one outlet nozzle for dust suppression fluid, comprising a fixed component for fixed attachment to the machine adjacent to the end of the driven shaft remote from the cutter head, the fixed component having first and second fluid inlet means and first and second fluid outlet means interconnected to the said first and second fluid inlet means, respectively, a nozzle interconnected to the first fluid outlet means for delivering an air flow-inducting jet of fluid along the bore of the driven shaft, and a hollow elongated member which is connected to the second fluid outlet means for feeding dust suppression fluid along the bore of the driven shaft towards the cutter head and which constitutes an assembly rotatable with respect to the fixed component.
Claim 7
Dependent Claim
68 words
Apparatus as claimed in claim 4, in which the said assembly comprises a tube interconnecting the nozzle to the said first fluid outlet means and passing through the said second fluid outlet means, and a hollow member defining a passage at least a portion of which extends transverse to the axis of the elongated member and which interconnects the elongated member to the said second fluid outlet means.
Claim 8
Dependent Claim
27 words
Apparatus as claimed in claim 4, in which the said assembly comprises a bored block adapted to be rotatably mounted around, a portion of the fixed component.
Claim 9
Dependent Claim
125 words
A mineral mining machine including an axially bored driven shaft, a cutter head drivably mounted on the driven shaft, at least one nozzle for dust suppression fluid, and apparatus for ventilating the cutter head, the apparatus comprising a fixed component for fixed attachment to the machine adjacent to the end of the driven shaft remote from the cutter head, the fixed component having fluid inlet means and first and second fluid outlet means, a nozzle interconnected to the first fluid outlet means for delivering an air flow-inducing jet of fluid along the bore of the driven shaft, and a hollow elongated member connected to the second fluid outlet means for feeding dust suppression fluid along the bore of the driven shaft towards the cutter head.
Claim 10
Dependent Claim
125 words
A mineral mining machine including an axially bored driven shaft, a cutter head drivably mounted on the driven shaft, at least one nozzle for dust suppression fluid, and apparatus for ventilating the cutter head, the apparatus comprising a fixed component for fixed attachment to the machine adjacent to the end of the driven shaft remote from the cutter head, the fixed component having fluid inlet means and first and second fluid outlet means, a nozzle interconnected to the first fluid outlet means for delivering an air flow-inducing jet of fluid along the bore of the driven shaft, and a hollow elongated member connected to the second fluid outlet means for feeding dust suppression fluid along the bore of the driven shaft towards the cutter head.
Claim 11
Dependent Claim
27 words
A mineral mining machine as claimed in claim 7, comprising diffuser means mounted in the cutter head to diffuse the induced air flow along the driven shaft.
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) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |