Patent US3261303A successfully refreshed from Google Patents.
US3261303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overhead haulage systems
Assignee: ANGLO TRANSVAAL CONS INVEST CO
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Filing: 1965-07-06
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Granted: 1966-07-19
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Expires: 1985-07-06
Abstract
No abstract record available.
Inventors
- 👤 Summers Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:11
CPC Classifications
B; B61; B61C; B61C15/00; B61C15/04; B61C13/00; B61C13/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A LOCOMOTIVE ADAPTED TO BE SUSPENDED FROM AN OVERHEAD TRACK, SAID LOCOMOTIVE COMPRISING A RIGID MAIN FRAME, A SECONDARY FRAME, TWO PAIRS OF FREE RUNNING WHEELS THE MEMBERS OF EACH PAIR BEING COAXIAL AND EACH WHEEL MOUNTED ON A CORRESPONDING STUB AXLE PROJECTING INWARDLY FROM THE SECONDARY FRAME, PARALLEL LINK ARMS OF TRIANGULAR SHAPE ROTATABLY SUSPENDED FROM EACH STUB AXLE WITH ONE LOWER CORNER OF EACH LINK ARM PIVOTALLY CONNECTED TO THE MAIN FRAME, AND THE OTHER LOWER FREE CORNER OF EACH LINK AMR SUPPORTING A DRIVE WHEEL POSITIONED BETWEEN THE PAIRS OF FREE RUNNING WHEELS AND A DRAWBAR CONNECTED TO THE SECONDARY FRAME.
Claim 2
Dependent Claim
104 words
A LOCOMOTIVE ADAPTED TO BE SUSPENDED FROM AN OVERHEAD TRACK, SAID LOCOMOTIVE COMPRISING A RIGID MAIN FRAME, A SECONDARY FRAME, TWO PAIRS OF FREE RUNNING WHEELS THE MEMBERS OF EACH PAIR BEING COAXIAL AND EACH WHEEL MOUNTED ON A CORRESPONDING STUB AXLE PROJECTING INWARDLY FROM THE SECONDARY FRAME, PARALLEL LINK ARMS OF TRIANGULAR SHAPE ROTATABLY SUSPENDED FROM EACH STUB AXLE WITH ONE LOWER CORNER OF EACH LINK ARM PIVOTALLY CONNECTED TO THE MAIN FRAME, AND THE OTHER LOWER FREE CORNER OF EACH LINK AMR SUPPORTING A DRIVE WHEEL POSITIONED BETWEEN THE PAIRS OF FREE RUNNING WHEELS AND A DRAWBAR CONNECTED TO THE SECONDARY FRAME.
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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |