Patent US2865282A successfully refreshed from Google Patents.
Patent US3751073A successfully refreshed from Google Patents.
US3751073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for towing trailers
Assignee: Individual
•
Filing: 1971-09-27
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Granted: 1973-08-07
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Expires: 1991-09-27
Abstract
Abstract This invention relates to a piggyback extension for piggybacking a wheeled trailer. The extension includes a frame, a hitch disposed near the front end of the frame to connect the frame to a towing vehicle, and a hitch disposed near the rear end of the frame to connect the frame to a trailer. The extension when so connected is disposed in a generally-horizontal orientation. A support, laterally-mounted on the frame, is adapted to hold the axle of the trailer being piggybacked.
Inventors
- 👤 W Alexander
- 👤 L Stancik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:50
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/06; B60P3/10; B60P3/1033; B60P3/1083; B62; B62D; B62D53/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
178 words
A wheel-free trailer extension for piggybacking a trailer mounted on wheels, said extension being adapted for coupling between a towed trailer and a towing vehicle with said extension serving as an extension of said towed trailer, said towed trailer having a tongue whose tongue membErs are provided at their apex with first hitch connector means, and said towing vehicle having second hitch connector means at the rear end thereof, said trailer extension comprising: a tongue-shaped frame whose tongue members are adapted to engage the tongue members of the towed trailer to prevent relative rotation between said frame and the tongue of the towed trailer; third hitch connector means on the apex of said frame for detachably coupling said extension to the second hitch connector means; fourth hitch connector means on said frame between the apex and the base of said frame for detachably coupling with said first hitch connector means; and fifth hitch connector means on said frame, between said third and fourth hitch connector means, for detachably coupling with the hitch connector means of the piggybacked trailer.
Claim 2
Dependent Claim
178 words
A wheel-free trailer extension for piggybacking a trailer mounted on wheels, said extension being adapted for coupling between a towed trailer and a towing vehicle with said extension serving as an extension of said towed trailer, said towed trailer having a tongue whose tongue membErs are provided at their apex with first hitch connector means, and said towing vehicle having second hitch connector means at the rear end thereof, said trailer extension comprising: a tongue-shaped frame whose tongue members are adapted to engage the tongue members of the towed trailer to prevent relative rotation between said frame and the tongue of the towed trailer; third hitch connector means on the apex of said frame for detachably coupling said extension to the second hitch connector means; fourth hitch connector means on said frame between the apex and the base of said frame for detachably coupling with said first hitch connector means; and fifth hitch connector means on said frame, between said third and fourth hitch connector means, for detachably coupling with the hitch connector means of the piggybacked trailer.
Claim 3
Dependent Claim
23 words
The trailer extension of claim 1, and a support laterally mounted on said frame for detachably receiving the axle of the piggybacked trailer.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |