Patent US4055367A successfully refreshed from Google Patents.
US4055367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Longwall machine with captivating bracket
Assignee: Coal Industry Patents Ltd
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Filing: 1976-07-27
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Granted: 1977-10-25
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Expires: 1996-07-27
Abstract
Abstract A ranging arm mining machine traversable to and fro along a fixed guide extending along a working face is provided with a bracket assembly secured to a support trunnion for a ranging arm carrying a cutter drum such that in use the machine is trapped or captivated to the guide.
Inventors
- 👤 William Joseph Jarvis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:44
CPC Classifications
E; E21; E21C; E21C29/00; E21C29/02; E21C35/00; E21C35/08; E21C35/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
102 words
Mine equipment for trapping or captivating a ranging arm mining machine to a guide extending along one side of the machine along a working face, the machine including a body, a support trunnion connected to the body, and a cutter-carrying ranging arm mounted on the support trunnion, including a bracket assembly securable to the support trunnion, the bracket assembly comprising a first component for attachment to the support trunnion and a second component for extending around the guide such that in use when the bracket assembly is mounted on the support trunnion the machine is trapped to or captivated to the guide.
Claim 2
Dependent Claim
102 words
Mine equipment for trapping or captivating a ranging arm mining machine to a guide extending along one side of the machine along a working face, the machine including a body, a support trunnion connected to the body, and a cutter-carrying ranging arm mounted on the support trunnion, including a bracket assembly securable to the support trunnion, the bracket assembly comprising a first component for attachment to the support trunnion and a second component for extending around the guide such that in use when the bracket assembly is mounted on the support trunnion the machine is trapped to or captivated to the guide.
Claim 3
Dependent Claim
21 words
Equipment as claimed in claim 1, in which the bracket assembly is adapted to help support the weight of the machine.
Claim 4
Dependent Claim
22 words
Equipment as claimed in claim 2, in which the second component is provided with at least one roller for engaging the guide.
Claim 5
Dependent Claim
59 words
Mine equipment as claimed in claim 1, in which the guide comprises a rack and in which the body comprises pinions connected to the rack for driving the machine to and fro along the rack, wherein the rack includes an upper plate and wherein the second component of the bracket assembly comprises rollers for mounting on the support plate.
Claim 6
Dependent Claim
82 words
Mine equipment as claimed in claim 4 wherein the guide comprises a rack and the machine body comprises a drive pinion for engaging the rack, and wherein the rack comprises upper and lower plates, wherein the horizontal rollers engage an upper surface of the upper plate, and the vertical limb extends downward along the rack on a side thereof opposite the trunion end face, and wherein a pad extends inward from the limb toward the rack between the upper and lower plates.
Claim 7
Dependent Claim
92 words
Mine equipment as claimed in claim 1, wherein the trunnion has a circular end face and wherein the first component of the bracket assembly is fixed to the circular end face of the trunnion and wherein the second component comprises a support frame extending around the guide and having horizontal rollers mounted in the support frame for engaging an upper surface of the guide, and having a vertical limb connected to the support frame and extending downwardly therefrom on a side of the guide opposite the circular end face of the trunnion.
Claim 8
Dependent Claim
95 words
A ranging arm mining machine traversable to and fro along a guide extending along one side of the machine along a working face, including a body, a support trunnion connected to the body, a cutter-carrying ranging arm mounted on the support trunnion, and trapping or captivating equipment comprising a bracket assembly secured to the support trunnion for engagement with the guide, the bracket assembly comprising a first component attached to the support trunnion and a second component extending around the guide such that in use the machine body is trapped or captivated to the guide.
Claim 9
Dependent Claim
95 words
A ranging arm mining machine traversable to and fro along a guide extending along one side of the machine along a working face, including a body, a support trunnion connected to the body, a cutter-carrying ranging arm mounted on the support trunnion, and trapping or captivating equipment comprising a bracket assembly secured to the support trunnion for engagement with the guide, the bracket assembly comprising a first component attached to the support trunnion and a second component extending around the guide such that in use the machine body is trapped or captivated to the guide.
Claim 10
Dependent Claim
21 words
A machine as claimed in claim 7, in which the bracket assembly helps to support the weight of the machine body.
Claim 11
Dependent Claim
23 words
A machine as claimed in claim 8, in which the second component is provided with at least one roller for engaging the guide.
Claim 12
Dependent Claim
78 words
The mining machine as claimed in claim 7 wherein the support trunion has an end face and wherein the first component of the bracket assembly is fixed to the end face of the support trunion, and wherein the second component of the bracket assembly extends outward from the first component and from the end face of the trunion outward over a guide and downward beside a guide on a side thereof opposite the end face of the trunion.
References Cited (Backward Citations)
GB1088999A
Cited
DE2121156A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-10-24 | 1981-04-25 | 1981-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-24 | 1985-04-25 | 1985-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-24 | 1989-04-25 | 1989-10-25 | $7700.00 | Window Closed / Lapsed |