US3733084A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer construction
Assignee: Individual
•
Filing: 1971-12-09
•
Granted: 1973-05-15
•
Expires: 1991-12-09
Abstract
Abstract A trailer construction including three wheel assemblies each comprising two independent sets of wheels. Each independent set of wheels is pivotally connected to the trailer bed and the two independent sets of wheels in each wheel assembly are connected together by links so as to operate in unison. Lock means is provided for optionally locking the individual sets of wheels of the central wheel assembly only, in a straight path, while the trailer is moving forward. Floating wheels are provided at the pivot points of the sets of wheels and lock means is provided for optionally locking certain of said floating wheels to the auxiliary frames of the corresponding wheel sets. Said certain floating wheels are connected together to rotate in unison. Air cylinders are controlled by the tractor operator for simultaneously moving all three wheel assemblies in the same direction for steering the trailer when it is moved in reverse.
Inventors
- 👤 R Mauck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:06
CPC Classifications
B; B62; B62D; B62D13/00; B62D13/06; B62D13/04; Y; Y10; Y10S; Y10S280/00; Y10S280/09
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
126 words
Trailer construction including a main frame, longitudinally spaced supporting front, intermediate and rear wheel assemblies, each wheel assembly having generally axially aligned laterally spaced sets of generally axially aligned laterally spaced wheels, an auxiliary frame for each of said sets of wheels, vertical pivot means for pivotally mounting the front end portion of each auxiliary frame to the main frame, means connecting the rear end portions of the auxiliary frames of each wheel assembly together, means for locking the sets of wheels of the intermediate wheel assembly with the wheels in a straight path for forward movement of the trailer, and means controlled by the operator for controlling the pivotal movement of all of the sets of wheels for steering the trailer when moving in reverse.
Claim 2
Dependent Claim
126 words
Trailer construction including a main frame, longitudinally spaced supporting front, intermediate and rear wheel assemblies, each wheel assembly having generally axially aligned laterally spaced sets of generally axially aligned laterally spaced wheels, an auxiliary frame for each of said sets of wheels, vertical pivot means for pivotally mounting the front end portion of each auxiliary frame to the main frame, means connecting the rear end portions of the auxiliary frames of each wheel assembly together, means for locking the sets of wheels of the intermediate wheel assembly with the wheels in a straight path for forward movement of the trailer, and means controlled by the operator for controlling the pivotal movement of all of the sets of wheels for steering the trailer when moving in reverse.
Claim 3
Dependent Claim
37 words
Trailer construction as defined in claim 1 in which the means connecting the rear end portion of the auxiliary frames of each wheel assembly comprises a tie rod pivotally connected at opposite ends to said auxiliary frames.
Claim 4
Dependent Claim
87 words
Trailer construction as defined in claim 1 in which a floating wheel is pivotally mounted upon the vertical pivot means of certain auxiliary frames, means is provided for locking one floating wheel in each wheel assembly to the corresponding auxiliary frame, and means is provided for connecting one floating wheel of the intermediate wheel assembly to the corresponding floating wheel of the front wheel assembly and for connecting the other floating wheel of the intermediate wheel assembly with the corresponding floating wheel of the rear wheel assembly.
Claim 5
Dependent Claim
55 words
Trailer construction as defined in claim 1 in which the means for locking the sets of wheels of the intermediate wheel assembly with the wheels in a straight path comprises a cylinder operated lock bolt on one of said sets of wheels for engagement in an aperture in an arcuate beam on said main frame.
Claim 6
Dependent Claim
56 words
Trailer construction as defined in claim 1 in which the means controlled by the operator for controlling the pivotal movement of all of the sets of wheels for steering the trailer when moving in reverse includes manually controlled fluid cylinder means interposed between the main frame and the sets of wheels of the intermediate wheel assembly.
Claim 7
Dependent Claim
36 words
Trailer construction as defined in claim 1 in which the main frame comprises a central longitudinally disposed main beam and a plurality of transversely disposed cross beams located through the upper portion of the main beam.
Claim 8
Dependent Claim
39 words
Trailer construction as defined in claim 3 in which the means for connecting the floating wheels of the intermediate, front and rear wheel assemblies comprises rods pivotally connected at their ends to the peripheral portions of the floating wheels.
Claim 9
Dependent Claim
42 words
Trailer construction as defined in claim 3 in which said floating wheels have sprocket teeth around their peripheries, sprocket chains are located around the same and means connects the ends of each sprocket chain to the ends of the corresponding sprocket chains.
Claim 10
Dependent Claim
30 words
Trailer construction as defined in claim 3 in which manually controlled fluid cylinder means is interposed between the main frame and the sets of wheels of the intermediate wheel 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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |