US4326465A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automobile tow wheel attachment
Assignee: Individual
•
Filing: 1980-05-27
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Granted: 1982-04-27
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Expires: 2000-05-27
Abstract
Abstract A tow wheel attachment for an automobile and which is used in conjunction with an underground conveyor system comprising a tubular metal frame having a base, a pair of legs extending divergently outwardly from the base and a horizontal crossbeam interconnecting the legs intermediate their ends; a wheel rotatably mounted on the base; a pair of brake disks disposed on appropriate sides of the wheel; a pair of mounting brackets affixed to the outer ends of the legs for the purpose of attaching the frame to the lower surface of the automobile; and a hydraulic cylinder connected at one end to the frame and at its other end to the center of the crossbeam for the purpose of lowering and raising the frame.
Inventors
- 👤 Sid Forrest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:38
CPC Classifications
B; B62; B62D; B62D1/00; B62D1/24; B62D1/26; B61; B61B; B61B10/00; B61B10/04; B61B13/00; B61B13/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
179 words
In combination with a conventional automobile movable along a highway as a passive vehicle; an externally powered conveyor system having a continuously moving channel disposed beneath the surface of said highway and movable longitudinally beneath said surface; a tow wheel attachment mounted on said automobile and comprising a tubular metal frame having a lower horizontal axle, a pair of legs extending divergently outwardly away from said axle and a horizontally disposed crossbeam interconnecting said legs intermediate their ends, a single wheel freely rotatably mounted on said axle; locking means for preventing rotation of said wheel on said axle; means for pivotally attaching said legs to a lower surface of said automobile; and means pivotally interposed between said crossbeam and said lower surface of said automobile for lowering and raising said frame whereby, when said automobile is positioned over said conveyor system to straddle said channel, the lowering of said frame brings said wheel into engagement with said channel, and upon locking said wheel causes said automobile to be pulled along said highway as a passive vehicle by the channel.
Claim 2
Dependent Claim
179 words
In combination with a conventional automobile movable along a highway as a passive vehicle; an externally powered conveyor system having a continuously moving channel disposed beneath the surface of said highway and movable longitudinally beneath said surface; a tow wheel attachment mounted on said automobile and comprising a tubular metal frame having a lower horizontal axle, a pair of legs extending divergently outwardly away from said axle and a horizontally disposed crossbeam interconnecting said legs intermediate their ends, a single wheel freely rotatably mounted on said axle; locking means for preventing rotation of said wheel on said axle; means for pivotally attaching said legs to a lower surface of said automobile; and means pivotally interposed between said crossbeam and said lower surface of said automobile for lowering and raising said frame whereby, when said automobile is positioned over said conveyor system to straddle said channel, the lowering of said frame brings said wheel into engagement with said channel, and upon locking said wheel causes said automobile to be pulled along said highway as a passive vehicle by the channel.
Claim 3
Dependent Claim
33 words
The combination of claim 1 wherein said locking means comprises a pair of brake disks mounted on said axle on opposite sides of said wheel and being activated by a hydraulic control line.
Claim 4
Dependent Claim
39 words
The combination of claim 1 wherein said means for lowering and raising said frame comprises a hydraulic cylinder connected at its lower end to said crossbeam and connected at its upper end to said lower surface of said automobile.
Claim 5
Dependent Claim
33 words
The combination of claim 1 wherein said means for attaching said frame to said lower surface of said automobile comprises a pair of hinged mounting brackets affixed to the ends of said legs.
References Cited (Backward Citations)
US406300A
Cited
US737190A
Cited
US2068403A
Cited
US2179515A
Cited
US2468158A
Cited
US2816516A
Cited
US2836129A
Cited
US2841249A
Cited
US3179066A
Cited
US3356040A
Cited
US3650216A
Cited
US3842752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-04-26 | 1985-10-26 | 1986-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-26 | 1989-10-26 | 1990-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-26 | 1993-10-26 | 1994-04-27 | $7700.00 | Window Closed / Lapsed |