Patent US3796443A successfully refreshed from Google Patents.
US3796443A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tractor rig and trailer hitch
Assignee: Lee Raymond Organization Inc
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Filing: 1971-12-30
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Granted: 1974-03-12
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Expires: 1991-12-30
Abstract
Abstract An improved trailer towing hitch device in which the towing bar is fastened to the tractor directly above the tractor rear axle, with combined lift and anti-sway bars which are attached to the conventional ''''A'''' frame trailer hitch unit, said anti-sway bars being readily disconnected from the tractor towing mechanism, independently of the ball and socket connection of the trailer hitch to the towing bar.
Inventors
- 👤 J Crutchfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:06
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/48; B60D1/488; B60D1/01; B60D1/06; B62; B62D; B62D53/00; B62D53/04; B62D53/06; B62D53/061; Y; Y10; Y10S; Y10S280/00; Y10S280/901
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
167 words
An improved towing device, adaptable for fastening to a conventional A-frame trailer hitch, comprising a foward end of the towing bar assembly fastened to the tractor vehicle directly above the rear axle of the towing vehicle, two combination anti-sway and lift bars, one of which fastens to the outside of each of the two converging tension members of the A-frame trailer hitch, both said anti-sway lift bars pivotably fastened between two horizontal plates integrally mounted to the rear end of the towing bar assembly, and a conventional hitch ball mounted to the upper of said horizontal plates, said hitch ball being adaptable for structurally linking with the female socket of the trailer hitch, with the towing bar assembly joined to a hitch ball mounted on the floor of the towing vehicle by means of a split socket at the forward end of the towing bar assembly, said socket consisting of a hinged member which is maintained in the closed position about the hitch ball by latching means.
Claim 2
Dependent Claim
167 words
An improved towing device, adaptable for fastening to a conventional A-frame trailer hitch, comprising a foward end of the towing bar assembly fastened to the tractor vehicle directly above the rear axle of the towing vehicle, two combination anti-sway and lift bars, one of which fastens to the outside of each of the two converging tension members of the A-frame trailer hitch, both said anti-sway lift bars pivotably fastened between two horizontal plates integrally mounted to the rear end of the towing bar assembly, and a conventional hitch ball mounted to the upper of said horizontal plates, said hitch ball being adaptable for structurally linking with the female socket of the trailer hitch, with the towing bar assembly joined to a hitch ball mounted on the floor of the towing vehicle by means of a split socket at the forward end of the towing bar assembly, said socket consisting of a hinged member which is maintained in the closed position about the hitch ball by latching means.
Claim 3
Dependent Claim
49 words
The combination recited in claim 1 in which said latching means consist of a hollow tubular collar which rides over said split socket when the split socket is in the closed position so as to prevent the hinged member of the split socket from rotating about the hinge axis.
Claim 4
Dependent Claim
47 words
The combination as recited in claim 2 in which the vertical axis of the hitch ball, mounted on the rear of the towing bar assembly, is located between the vertical axes of the pins which fasten each of tHe anti-sway lift bars to the towing bar assembly.
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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |