US3580608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer towing arrangement
Assignee: IBBETT ENGINEERING Co Ltd
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Filing: 1969-01-13
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Granted: 1971-05-25
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Expires: 1989-01-13
Abstract
Abstract The towing arrangement for attachment to a vehicle having two pairs of parallel arms having pivotal mountings at each end for connection at one end to a vehicle and at the other end to a tow body housing thereby forming a wishbone arrangement converged towards the housing. A connector which fits a coupling on another vehicle is attached to the tow body housing. A spring or hydraulic element is provided between the vehicle and the paris of parallel arms to exert an upward force on the latter.
Inventors
- 👤 Charles Clark Simpson Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:52
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/24; B60D1/42; B60D1/46; B60D1/465
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
147 words
A towing assembly for attachment to a vehicle, comprising a. a first pair of parallel arms adapted at one end for pivotal mounting on a vehicle. b. a second pair of parallel arms adapted at one end for pivotal mounting on a vehicle. c. a tow body housing pivotally connected with said first and second pairs of parallel arms at their other ends to form a wishbone arrangement of said arms the arrangement being convergent towards the tow body housing. d. a coupling means connected with the tow body housing which coupling means is held in a level position by means of said parallel arms. e. spring means for connection between said vehicle and said upper arms adapted to provide a restricted pivotal movement of said first and second parallel arms in both directions relative to said vehicle whereby excess movement of the coupling means is prevented.
Claim 2
Dependent Claim
147 words
A towing assembly for attachment to a vehicle, comprising a. a first pair of parallel arms adapted at one end for pivotal mounting on a vehicle. b. a second pair of parallel arms adapted at one end for pivotal mounting on a vehicle. c. a tow body housing pivotally connected with said first and second pairs of parallel arms at their other ends to form a wishbone arrangement of said arms the arrangement being convergent towards the tow body housing. d. a coupling means connected with the tow body housing which coupling means is held in a level position by means of said parallel arms. e. spring means for connection between said vehicle and said upper arms adapted to provide a restricted pivotal movement of said first and second parallel arms in both directions relative to said vehicle whereby excess movement of the coupling means is prevented.
Claim 3
Dependent Claim
30 words
A towing assembly according to claim 1, wherein there is provided adjustable means between said spring means and said upper arms whereby the height of said connector may be adjusted.
Claim 4
Dependent Claim
22 words
A towing assembly according to claim 2, wherein the adjustable means between said spring means and said upper arms comprises a screwjack.
Claim 5
Dependent Claim
23 words
A towing assembly according to claim 2, wherein the adjustable means between said spring means and said upper arms is a hydraulic jack.
Claim 6
Dependent Claim
41 words
A towing assembly according to claim 1, wherein there is provided a hydraulic master cylinder connected between the tow body housing and the coupling which master cylinder is adapted to provide a fluid under pressure for operation of an inertia brake.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |