Patent US3759186A successfully refreshed from Google Patents.
US3759186A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monorail railway transportation system
Assignee: Individual
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Filing: 1971-10-26
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Granted: 1973-09-18
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Expires: 1991-10-26
Abstract
Abstract A hauling system with a monorail comprises a rail body having a rack portion disposed under said rail body, and a tractor with an automatically disengagable clutch controling the speed of an engine having upper and lower rollers between which said rail body is pinched and a driving wheel with a plurality of engaging members circularly arranged and intermeshed with said rack portion.
Inventors
- 👤 M Sugimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:32
CPC Classifications
B; B61; B61C; B61C13/00; B61C13/04; B61C11/00; B61C11/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
134 words
A hauling system comprising a monorail, a tractor having an engine and at least one drive roller engaged with said monorail for driving said tractor along said monorail, engine speed control means on said engine, a lever pivoted on said engine and coupled to said engine speed control means for actuating said engine speed control means to sharply reduce the speed of the engine when said lever is pivoted from a first position to a second position, and an abutment disposed along said rail in the path of said lever for moving said lever from the first position to the second position when said tractor is driven past said abutment, and speed responsive clutch means coupled between said engine and said tractor drive roller which is disengaged when the engine speed is reduced sharply.
Claim 2
Dependent Claim
134 words
A hauling system comprising a monorail, a tractor having an engine and at least one drive roller engaged with said monorail for driving said tractor along said monorail, engine speed control means on said engine, a lever pivoted on said engine and coupled to said engine speed control means for actuating said engine speed control means to sharply reduce the speed of the engine when said lever is pivoted from a first position to a second position, and an abutment disposed along said rail in the path of said lever for moving said lever from the first position to the second position when said tractor is driven past said abutment, and speed responsive clutch means coupled between said engine and said tractor drive roller which is disengaged when the engine speed is reduced sharply.
Claim 3
Dependent Claim
35 words
A hauling system as claimed in claim 1 in which a control wire is provided which couples said lever and said enginc speed control means, and said speed responsive clutch means is a centrifugal clutch.
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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |