US3290097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust laying system for continuous mining machine
Assignee: Westinghouse Air Brake Co
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Filing: 1964-01-24
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Granted: 1966-12-06
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Expires: 1984-01-24
Abstract
No abstract record available.
Inventors
- 👤 Emil J Hlinsky
- 👤 Richard C Lundquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:20
CPC Classifications
E; E21; E21C; E21C35/00; E21C35/22; E21C35/23
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A CONTINUOUS MINING MACHINE, A ROTARY BORING HEAD SUPPORTED FOR ROTATION ABOUT A HORIZONTAL AXIS AND HAVING AT LEAST ONE BORING ARM EXTENDING RADIALLY OF THE AXIS OF ROTATION THEREOF AND MOUNTED FOR MOVEMENT INTO A RADIALLY EXTENDED CUTTING POSITION AND A CONTRACTED TRAMMING POSITION, AT LEAST ONE CUTTER SUPPORT EXTENDING FORWARDLY OF SAID BORING ARM, A POWER MEMBER COAXIAL WITH AND MOVABLE ALONG THE AXIS OF ROTATION OF SAID BORING HEAD, LINKAGE MEANS CONNECTING SAID POWER MEMBER WITH SAID BORING ARM FOR EXTENSIBLY AND RETRACTIBLY MOVING SAID BORING ARM, THE IMPROVEMENTS COMPRISING: DUST LAYING APPARATUS INCLUDING A DISTRIBUTOR ROTATABLE WITH SAID BORING ARM ABOUT THE AXIS OF ROTATION THEREOF, A MANIFOLD EXTENDING ALONG THE FRONT OF SAID CUTTER SUPPORT AND HAVING CUTTER BLOCKS MOUNTED THEREON AND PROJECTING FORWARDLY THEREFROM,
Claim 2
Dependent Claim
131 words
IN A CONTINUOUS MINING MACHINE, A ROTARY BORING HEAD SUPPORTED FOR ROTATION ABOUT A HORIZONTAL AXIS AND HAVING AT LEAST ONE BORING ARM EXTENDING RADIALLY OF THE AXIS OF ROTATION THEREOF AND MOUNTED FOR MOVEMENT INTO A RADIALLY EXTENDED CUTTING POSITION AND A CONTRACTED TRAMMING POSITION, AT LEAST ONE CUTTER SUPPORT EXTENDING FORWARDLY OF SAID BORING ARM, A POWER MEMBER COAXIAL WITH AND MOVABLE ALONG THE AXIS OF ROTATION OF SAID BORING HEAD, LINKAGE MEANS CONNECTING SAID POWER MEMBER WITH SAID BORING ARM FOR EXTENSIBLY AND RETRACTIBLY MOVING SAID BORING ARM, THE IMPROVEMENTS COMPRISING: DUST LAYING APPARATUS INCLUDING A DISTRIBUTOR ROTATABLE WITH SAID BORING ARM ABOUT THE AXIS OF ROTATION THEREOF, A MANIFOLD EXTENDING ALONG THE FRONT OF SAID CUTTER SUPPORT AND HAVING CUTTER BLOCKS MOUNTED THEREON AND PROJECTING FORWARDLY THEREFROM,
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |