US3192722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mining support
Assignee: Gewerkschaft Eisenhutte Westfalia GmbH
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Filing: 1960-09-14
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Granted: 1965-07-06
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Expires: 1980-09-14
Abstract
No abstract record available.
Inventors
- 👤 Herrmann Julius
- 👤 Hoffmann Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:44
CPC Classifications
E; E21; E21D; E21D23/00; E21D23/04; E21D23/06; E21D23/0047; E21D23/0052; E21D23/006; E21D23/0073; E21F; E21F13/00; E21F13/08; E21F13/086
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN A PROP AND CONVEYOR ARRANGEMENT FOR MINES, IN COMBINATION, ELONGATED CONVEYOR MEANS ADAPTED TO EXTEND ALONG A MINE FACE; FRONT PROP MEANS LOCATED ADJACENT SAID CONVEYOR MEANS; REAR PROP MEANS LOCATED ADJACENT SAID FRONT PROP MEANS; AND ADVANCING MEANS COMMON TO SAID CONVEYOR MEANS AND SAID FRONT AND REAR PROP MEANS AND OPERATIVELY CONNECTED TO SAID CONVEYOR MEANS AND SAID FRONT AND REAR PROP MEANS FOR ADVANCING SAID CONVEYOR MEANS, SAID FRONT PROP MEANS, AND SAID REAR PROP MEANS TOWARD THE MINE FACE, SAID ADVANCING MEANS INCLUDING THREE ELONGATED COAXIAL ELEMENTS COOPERATING TELESCOPICALLY WITH EACH OTHER AND CONNECTED WITH SAID CONVEYOR MEANS, SAID FRONT PROP MEANS, AND SAID REAR PROP MEANS SO THAT WHEN ONE OF SAID ELEMENTS MOVE AXIALLY, THE MEANS CONNECTED THEREWITH WILL ALSO MOVE.
Claim 2
Dependent Claim
128 words
IN A PROP AND CONVEYOR ARRANGEMENT FOR MINES, IN COMBINATION, ELONGATED CONVEYOR MEANS ADAPTED TO EXTEND ALONG A MINE FACE; FRONT PROP MEANS LOCATED ADJACENT SAID CONVEYOR MEANS; REAR PROP MEANS LOCATED ADJACENT SAID FRONT PROP MEANS; AND ADVANCING MEANS COMMON TO SAID CONVEYOR MEANS AND SAID FRONT AND REAR PROP MEANS AND OPERATIVELY CONNECTED TO SAID CONVEYOR MEANS AND SAID FRONT AND REAR PROP MEANS FOR ADVANCING SAID CONVEYOR MEANS, SAID FRONT PROP MEANS, AND SAID REAR PROP MEANS TOWARD THE MINE FACE, SAID ADVANCING MEANS INCLUDING THREE ELONGATED COAXIAL ELEMENTS COOPERATING TELESCOPICALLY WITH EACH OTHER AND CONNECTED WITH SAID CONVEYOR MEANS, SAID FRONT PROP MEANS, AND SAID REAR PROP MEANS SO THAT WHEN ONE OF SAID ELEMENTS MOVE AXIALLY, THE MEANS CONNECTED THEREWITH WILL ALSO MOVE.
References Cited (Backward Citations)
US834825A
Cited
DE842186C
Cited
DE849537C
Cited
DE879242C
Cited
FR1070316A
Cited
US2910281A
Cited
FR1199170A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |