US3289567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mine ventilating apparatus and method
Assignee: Individual
•
Filing: 1964-04-22
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Granted: 1966-12-06
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Expires: 1984-04-22
Abstract
No abstract record available.
Inventors
- 👤 Renner Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:33
CPC Classifications
E; E21; E21F; E21F1/00; E21F1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A METHOD OF CARRYING AWAY DANGEROUS LAYERS OF GAS COLLECTING ADJACENT THE INNER WALL SURFACES OF A TUNNEL OR MINE WORKING, WHICH IS VENTILATED BY AN AIR STREAM FLOWING THROUGH THE TUNNEL, WHICH COMPRISES BLOWING AIR INTO SAID LAYERS OF GAS FROM THE PERIPHERY OF AN AIR DUCT, CHARACTERIZED IN THAT THE AIR ISSUES FROM THE AIR DUCT IN THE VICINITY OF THE OUTER SURFACE OF A CONVEXLY CURVED SURFACE ON THE DUCT, SAID SURFACE BEING NEAR AND ESSENTIALLY PARALLEL TO THE WALL OF THE TUNNEL, THE DIRECTION OF ISSUANCE OF THE AIR BEING TANGENTIAL TO THE OUTER CURVED SURFACE SO THAT A PORTION OF THE ISSUING AIR FLOW IS CURVED AWAY FROM THE WALL SURFACES OF THE TUNNEL THEREBY INTRODUCING INTO THE MAIN AIR STREAM OF VENTILATING AIR A SWIRLING, ROTARY COMPONENT OF MOTION TRANSVERSELY OF THE LENGTH OF THE TUNNEL WHICH SUPERIMPOSES ITSELF UPON THE LINEAR MOTION OF THE MAIN STREAM OF VENTILATING AIR FLOWING THROUGH THE TUNNEL.
Claim 2
Independent Claim
160 words
A METHOD OF CARRYING AWAY DANGEROUS LAYERS OF GAS COLLECTING ADJACENT THE INNER WALL SURFACES OF A TUNNEL OR MINE WORKING, WHICH IS VENTILATED BY AN AIR STREAM FLOWING THROUGH THE TUNNEL, WHICH COMPRISES BLOWING AIR INTO SAID LAYERS OF GAS FROM THE PERIPHERY OF AN AIR DUCT, CHARACTERIZED IN THAT THE AIR ISSUES FROM THE AIR DUCT IN THE VICINITY OF THE OUTER SURFACE OF A CONVEXLY CURVED SURFACE ON THE DUCT, SAID SURFACE BEING NEAR AND ESSENTIALLY PARALLEL TO THE WALL OF THE TUNNEL, THE DIRECTION OF ISSUANCE OF THE AIR BEING TANGENTIAL TO THE OUTER CURVED SURFACE SO THAT A PORTION OF THE ISSUING AIR FLOW IS CURVED AWAY FROM THE WALL SURFACES OF THE TUNNEL THEREBY INTRODUCING INTO THE MAIN AIR STREAM OF VENTILATING AIR A SWIRLING, ROTARY COMPONENT OF MOTION TRANSVERSELY OF THE LENGTH OF THE TUNNEL WHICH SUPERIMPOSES ITSELF UPON THE LINEAR MOTION OF THE MAIN STREAM OF VENTILATING AIR FLOWING THROUGH THE TUNNEL.
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 |