US3843165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Draw bar
Assignee: EAZ LIFT SPRING CORP
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Filing: 1972-06-19
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Granted: 1974-10-22
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Expires: 1992-06-19
Abstract
Abstract A draw bar for a load transferring trailer hitch is made of two corrugated metal sheets secured to a socket member at one end and having a downwardly bent extension at the other or forward end. The draw bar is attached beneath a towing vehicle by hooking the downwardly bent extension into a slot on a crossbar secured to the towing vehicle and bolting the socket end of the draw bar to another crossbar secured to the vehicle. The socket is adapted to receive the shank of a hitch head for a load transferring hitch.
Inventors
- 👤 M Mathisen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:58
CPC Classifications
B; B60; B60D; B60D1/00; B60D1/14; B60D1/167
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
141 words
A draw bar for a load transferring hitch for positioning under a towing vehicle, said draw bar comprising a member having socket means at its rear end, means at its front end for hooking onto a first part carried by said towing vehicle and means in the region of its rear end for bolting to a second part carried by the towing vehicle, said draw bar being assembled with the towing vehicle by first attaching the hooking means to said first part, then, without tilting the draw bar about its longitudinal axis, pivoting the draw bar upwardly about said hooking means and then bolting the said means for bolting to said second part, further comprising a pair of corrugated sheets, the corrugations of each sheet running longitudinally and the corrugations of one sheet being opposite the corrugations of the other sheet.
Claim 2
Dependent Claim
141 words
A draw bar for a load transferring hitch for positioning under a towing vehicle, said draw bar comprising a member having socket means at its rear end, means at its front end for hooking onto a first part carried by said towing vehicle and means in the region of its rear end for bolting to a second part carried by the towing vehicle, said draw bar being assembled with the towing vehicle by first attaching the hooking means to said first part, then, without tilting the draw bar about its longitudinal axis, pivoting the draw bar upwardly about said hooking means and then bolting the said means for bolting to said second part, further comprising a pair of corrugated sheets, the corrugations of each sheet running longitudinally and the corrugations of one sheet being opposite the corrugations of the other sheet.
Claim 3
Dependent Claim
89 words
In a load transferring hitch, a draw bar positioned underneath a towing vehicle, said draw bar having means at its rear end for connection to a portion of said hitch and extending forwardly of said towing vehicle underneath the fuel tank of said vehicle, said draw bar being relatively wide with respect to its length to afford substantial protection to said fuel tank, and comprising a pair of corrugated sheets with the corrugations running longitudinally and the corrugations of one sheet positioned opposite the corrugations of the other sheet.
Claim 4
Dependent Claim
89 words
In a load transferring hitch, a draw bar positioned underneath a towing vehicle, said draw bar having means at its rear end for connection to a portion of said hitch and extending forwardly of said towing vehicle underneath the fuel tank of said vehicle, said draw bar being relatively wide with respect to its length to afford substantial protection to said fuel tank, and comprising a pair of corrugated sheets with the corrugations running longitudinally and the corrugations of one sheet positioned opposite the corrugations of the other sheet.
Claim 5
Dependent Claim
22 words
In a load transferring hitch as claimed in claim 2, the draw bar cOmprising a corrugated sheet with the corrugations running longitudinally.
Claim 6
Dependent Claim
200 words
A load transferring trailer hitch comprising, a substantially planar draw bar structure having socket means at its rear end and tongue means projecting from its other and terminating in a forwardly extending portion which is also directed downwardly from the plane of the bar to make an obtuse angle therewith, vertically extending wall means attached to the underside of a towing vehicle forwardly of its rearwardly located fuel tank and having a rearwardly facing opening therethrough for slidably receiving the tongue means as the draw bar is moved forwardly with its rear end portion below the level of the tongue means which is positioned horizontally while sliding through said opening, and means for detachable securing the rear end of the draw bar to the vehicle rearwardly of the fuel tank when its rear end portion is swung upwardly without turning about a horizontal plane with the inner corner of the angle formed between the tongue means and the bar fulcrumed on the lower surface of the wall of said opening to hook the downwardly extending tongue means therein when the draw bar extends in a generally horizontal towing position the width of the bar being substantially one-third the length thereof.
Claim 7
Dependent Claim
200 words
A load transferring trailer hitch comprising, a substantially planar draw bar structure having socket means at its rear end and tongue means projecting from its other and terminating in a forwardly extending portion which is also directed downwardly from the plane of the bar to make an obtuse angle therewith, vertically extending wall means attached to the underside of a towing vehicle forwardly of its rearwardly located fuel tank and having a rearwardly facing opening therethrough for slidably receiving the tongue means as the draw bar is moved forwardly with its rear end portion below the level of the tongue means which is positioned horizontally while sliding through said opening, and means for detachable securing the rear end of the draw bar to the vehicle rearwardly of the fuel tank when its rear end portion is swung upwardly without turning about a horizontal plane with the inner corner of the angle formed between the tongue means and the bar fulcrumed on the lower surface of the wall of said opening to hook the downwardly extending tongue means therein when the draw bar extends in a generally horizontal towing position the width of the bar being substantially one-third the length thereof.
Claim 8
Dependent Claim
42 words
A load transferring trailer hitch as in claim 4 wherein said draw bar is provided with forwardly facing shoulder means for abutting the rear surface of said wall means when the draw bar is secured to the rear end of the vehicle.
Claim 9
Dependent Claim
21 words
A load transferring trailer hitch as in claim 5 wherein said forwardly facing shoulder means extends downwardly from said draw bar.
Claim 10
Dependent Claim
21 words
A load transferring trailer hitch as in claim 4 wherein the tongue means extends the entire width of said draw bar.
Claim 11
Dependent Claim
40 words
A load transferring trailer hitch as in claim 4 wherein the means for detachably securing the rear end of the draw bar to the vehicle constitutes the only structure for attaching to and detaching the draw bar from the vehicle.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |