US3724874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle drawbar assembly
Assignee: Individual
•
Filing: 1971-07-30
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Granted: 1973-04-03
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Expires: 1991-07-30
Abstract
Abstract A drawbar assembly for hitching two trailers together is composed of the following combination: (1) a hollow, rectangular, drawbar receiver for attaching to the rear axle of the first trailer; (2) a portable drawbar attachable to the tongue of the second trailer and movable into the receiver; and (3) a flexible dragline attachable at one end to the drawbar, thence running through the receiver and under the first trailer and attachable at the other end to a tractor for pulling the drawbar into the receiver; the combination having stopping and locking means for holding the drawbar in the receiver.
Inventors
- 👤 G Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:20
CPC Classifications
B; B62; B62D; B62D53/00; B60; B60D; B60D1/00; B60D1/24; B60D1/36; B60D1/38
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
176 words
A vehicle drawbar assembly for connecting a plurality of vehicles used in farming operations, including draft and trailer vehicles for travel in the field or on the road, comprising: a hollow, substantially rectangular receiver, having open ends and flat walls at the bottom, top and sides; rollers at the rear end, adjacent the bottom and side walls, to guide a drawbar into said receiver; and a locking mechanism at the front end to lock the drawbar in the receiver; a drawbar, substantially flat and commensurate in length with the receiver, having means at the front end for cooperating with the locking mechanism and for fastening to a dragline; and a stop at the rear end to limit the distance the drawbar enters the receiver; and a dragline for connecting the drawbar To a draft vehicle, having a single, continuous cable of sufficient length to reach from the draft vehicle to the last trailer vehicle; and means at the front end for connecting to said draft vehicle and at the rear end for connecting to the drawbar.
Claim 2
Dependent Claim
176 words
A vehicle drawbar assembly for connecting a plurality of vehicles used in farming operations, including draft and trailer vehicles for travel in the field or on the road, comprising: a hollow, substantially rectangular receiver, having open ends and flat walls at the bottom, top and sides; rollers at the rear end, adjacent the bottom and side walls, to guide a drawbar into said receiver; and a locking mechanism at the front end to lock the drawbar in the receiver; a drawbar, substantially flat and commensurate in length with the receiver, having means at the front end for cooperating with the locking mechanism and for fastening to a dragline; and a stop at the rear end to limit the distance the drawbar enters the receiver; and a dragline for connecting the drawbar To a draft vehicle, having a single, continuous cable of sufficient length to reach from the draft vehicle to the last trailer vehicle; and means at the front end for connecting to said draft vehicle and at the rear end for connecting to the drawbar.
Claim 3
Dependent Claim
25 words
A device according to claim 1 in which the locking mechanism is a trap-door operating through a recess in the top wall of the receiver.
Claim 4
Dependent Claim
37 words
A device according to claim 1 in which the means at the front end of the drawbar for cooperating with the locking mechanism is a notch formed by an extension of a flat bar between clevis plates.
Claim 5
Dependent Claim
39 words
A device according to claim 1 in which the stop at the rear end of the drawbar is an upright bar on the top of the drawbar to jam against a plate forming the top wall of the receiver.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |