US3801158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating hub assembly for a mining cutter bit
Assignee: C0NSOLIDATION COAL Co
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Filing: 1972-10-25
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Granted: 1974-04-02
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Expires: 1992-10-25
Abstract
Abstract A mounting assembly for a mining tool adapted to fit in a bit block consisting of a hub assembly having an axial opening therethrough of a size to journal a mining cutter bit. The bit block has a larger opening adapted to accept the hub assembly and permit rotation of the hub assembly in the bit block. The hub assembly extends over the bit block so that a seal can be mounted between the bit block and the hub assembly. A peripheral groove is formed in the hub assembly so that a screw can lock the hub assembly into the bit block.
Inventors
- 👤 L Wolfe
- 👤 F Radd
- 👤 D Oertle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:56
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/18; E21C35/19; E21C35/193; E21C35/1933; E21C35/191; E21C35/197
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
78 words
A mounting for a mining tool comprising: a. a bit block; b. a hub assembly having an axial opening therethrough of a size to journal a mining cutter bit; c. means for rotatably journaling said hub assembly in said bit block; and d. seal means between said hub assembly and said bit block, whereby said hub assembly is free to rotate in said bit block, said seal means preventing the intrusion of dust particles on said bearing surface.
Claim 2
Dependent Claim
78 words
A mounting for a mining tool comprising: a. a bit block; b. a hub assembly having an axial opening therethrough of a size to journal a mining cutter bit; c. means for rotatably journaling said hub assembly in said bit block; and d. seal means between said hub assembly and said bit block, whereby said hub assembly is free to rotate in said bit block, said seal means preventing the intrusion of dust particles on said bearing surface.
Claim 3
Dependent Claim
27 words
A mounting assembly as described in claim 1 wherein said hub assembly has a plurality of impact extensions formed normal to the surface of said hub assembly.
Claim 4
Dependent Claim
46 words
A mounting assembly as described in claim 1 wherein said hub assembly contains a peripheral groove and wherein said bit block includes a screw means aligned with said peripheral groove for retaining said hub assembly in said bit block, yet permitting said hub assembly to rotate.
Claim 5
Dependent Claim
119 words
A hub assembly for a cutter bit comprising a bit block having an axial opening therein; a hub assembly having a cylindrical portion dimensioned to fit the axial opening in said bit block, said cylindrical portion having a length sufficient to extend from said axial opening, said portion extending from said axial opening having a circumferential lip, a circumferential seal; means for mounting said circumferential seal between said bit block and said circumferential lip; a peripheral groove in said cylindrical portion dimensioned to fit said axial opening in said bit block; retainer means mounted in said bit block and engaging said circumferential groove; and an axial opening in said hub assembly of a size to receive said cutter bit.
Claim 6
Dependent Claim
119 words
A hub assembly for a cutter bit comprising a bit block having an axial opening therein; a hub assembly having a cylindrical portion dimensioned to fit the axial opening in said bit block, said cylindrical portion having a length sufficient to extend from said axial opening, said portion extending from said axial opening having a circumferential lip, a circumferential seal; means for mounting said circumferential seal between said bit block and said circumferential lip; a peripheral groove in said cylindrical portion dimensioned to fit said axial opening in said bit block; retainer means mounted in said bit block and engaging said circumferential groove; and an axial opening in said hub assembly of a size to receive said cutter bit.
Claim 7
Dependent Claim
22 words
An assembly as described in claim 4 having a plurality of impact arms mounted normal to the surface of said hub assembly.
References Cited (Backward Citations)
US3519309A
Cited
US3498677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |