US3295331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Movable mining support
Assignee: Gewerkschaft Eisenhutte Westfalia GmbH
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Filing: 1964-04-03
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Granted: 1967-01-03
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Expires: 1984-04-03
Abstract
No abstract record available.
Inventors
- 👤 Blaser Karl Ernst
- 👤 Dommann Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:53
CPC Classifications
E; E21; E21D; E21D23/00; E21D23/0052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
258 words
MINING SUPPORT COMPRISING LOWER DRIVE MEANS HAVING A FIRST LOWER PART AND A SECOND LOWER PART OPERATIVELY INTERCONNECTED AND MOVABLE BACK AND FORTH WITH RESPECT TO EACH OTHER IN A HORIZONTAL DIRECTION, A FIRST PAIR OF SPACED APART VERTICAL MINING PROP MEANS POSITIONED ON ONE SIDE OF SAID LOWER DRIVE MEANS AND CONNECTED AT A LOWER LEVEL TO SAID FIRST LOWER PART, A SECOND PAIR OF SPACED APART VERTICAL MINNG PROP MEANS POSITIONED ON THE OTHER SIDE OF SAID LOWER DRIVE MEANS AND CONNECTED AT SAID LOWER LEVEL TO SAID SECOND LOWER PART, UPPER DRIVE MEANS HAVING A FIRST UPPER PART AND A SECOND UPPER PART OPERATIVELY INTERCONNECTED AND MOVABLE BACK AND FORTH WITH RESPECT TO EACH OTHER IN A HORIZONTAL DIRECTION, SAID UPPER DRIVE MEANS BEING VERTICALLY SPACED ABOVE SAID LOWER DRIVE MEANS WITH SAID FIRST UPPER PART BEING CONNECTED AT AN UPPER LEVEL TO SAID FIRST PAIR OF SPACE APART PROP MEANS, AND SAID SECOND UPPER PART BEING CONNECTED AT SAID UPPER LEVEL TO SAID SECOND PAIR OF SPACED APART PROP MEANS, SAID LOWER AND UPPER DRIVE MEANS BEING SEPARATELY CONNECTED TO SAID PROP MEANS AT SAID LEVELS FOR MAINTAINING SAID FIRST AND SECOND PAIRS OF PROP MEANS SUBSTANTIALLY PARALLEL WITH RESPECT TO THE DIRECTION OF MOVEMENT OF SAID PARTS, THE PROP MEANS OF EACH PAIR BEING SPACED APART FROM ONE ANOTHER IN THE DIRECTION OF MOVEMENT OF SAID PARTS AND BEING SPACED APART FROM THE ADJACENT PROP MEANS OF THE OTHER PAIR OF PROP MEANS IN THE DIRECTION TRANSVERSE TO THE MOVEMENT OF SAID PARTS.
Claim 2
Dependent Claim
258 words
MINING SUPPORT COMPRISING LOWER DRIVE MEANS HAVING A FIRST LOWER PART AND A SECOND LOWER PART OPERATIVELY INTERCONNECTED AND MOVABLE BACK AND FORTH WITH RESPECT TO EACH OTHER IN A HORIZONTAL DIRECTION, A FIRST PAIR OF SPACED APART VERTICAL MINING PROP MEANS POSITIONED ON ONE SIDE OF SAID LOWER DRIVE MEANS AND CONNECTED AT A LOWER LEVEL TO SAID FIRST LOWER PART, A SECOND PAIR OF SPACED APART VERTICAL MINNG PROP MEANS POSITIONED ON THE OTHER SIDE OF SAID LOWER DRIVE MEANS AND CONNECTED AT SAID LOWER LEVEL TO SAID SECOND LOWER PART, UPPER DRIVE MEANS HAVING A FIRST UPPER PART AND A SECOND UPPER PART OPERATIVELY INTERCONNECTED AND MOVABLE BACK AND FORTH WITH RESPECT TO EACH OTHER IN A HORIZONTAL DIRECTION, SAID UPPER DRIVE MEANS BEING VERTICALLY SPACED ABOVE SAID LOWER DRIVE MEANS WITH SAID FIRST UPPER PART BEING CONNECTED AT AN UPPER LEVEL TO SAID FIRST PAIR OF SPACE APART PROP MEANS, AND SAID SECOND UPPER PART BEING CONNECTED AT SAID UPPER LEVEL TO SAID SECOND PAIR OF SPACED APART PROP MEANS, SAID LOWER AND UPPER DRIVE MEANS BEING SEPARATELY CONNECTED TO SAID PROP MEANS AT SAID LEVELS FOR MAINTAINING SAID FIRST AND SECOND PAIRS OF PROP MEANS SUBSTANTIALLY PARALLEL WITH RESPECT TO THE DIRECTION OF MOVEMENT OF SAID PARTS, THE PROP MEANS OF EACH PAIR BEING SPACED APART FROM ONE ANOTHER IN THE DIRECTION OF MOVEMENT OF SAID PARTS AND BEING SPACED APART FROM THE ADJACENT PROP MEANS OF THE OTHER PAIR OF PROP MEANS IN THE DIRECTION TRANSVERSE TO THE MOVEMENT OF SAID PARTS.
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |