US3734529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer frame
Assignee: Individual
•
Filing: 1971-03-25
•
Granted: 1973-05-22
•
Expires: 1991-03-25
Abstract
Abstract A trailer frame structure is provided for mobile homes and consists of an outer, generally rectangular, frame having at its front end coupling means for attaching the trailer to a vehicle and an inner, generally rectangular, frame which is pivotally mounted intermediate its ends between the outer frame adjacent the rear end thereof whereby the inner frame is capable of pivoting about a generally horizontal axis. A wheel bogie is attached to one of the frames adjacent the pivot axis; the rear end of the inner frame extends beyond the rear end of the outer frame so that the front end of the inner frame will intersect the outer frame at a point intermediate the outer frames ends; adjustable abutment elements are provided on the forward end of the inner frame for contacting the underside of the outer frame when the inner frame pivots about its axis in response to the weight of a load on the rear end of the inner frame.
Inventors
- 👤 J Selby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:46
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/08; B62D53/0857; B60; B60P; B60P3/00; B60P3/32
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
254 words
A trailer structure for supporting a load comprising a first elongated frame member including substantially parallel spaced side beams extending from the front end of said first frame member to the rear end thereof, coupling means at said front end of said first frame member for coupling said trailer to a vehicle, a second elongated frame member including substantially parallel spaced side beams and having a front and a rear end, said second frame member being attached intermediate its ends to said first frame member adjacent said rear end of said first frame member for pivotal movement about a generally horizontal axis relative to said first frame member, said front end of said second frame membEr having means for engaging said side beams of said first frame member at substantially parallel points intermediate the ends of said first frame member so that, when said second frame member pivots about said axis in response to the weight of a load supported by said rear end of said second frame member, said engaging means on said front end of said second frame member and transmit an upwardly directed force thereto proportional to the weight of the load, said trailer structure further comprising a wheel assembly attached to one of said frame members proximate to said pivot axis, said means for engaging said side beams of said first frame member comprising a rigid beam connected to said front end of said second frame member and extending generally transverse to said side beams of said second frame member.
Claim 2
Dependent Claim
254 words
A trailer structure for supporting a load comprising a first elongated frame member including substantially parallel spaced side beams extending from the front end of said first frame member to the rear end thereof, coupling means at said front end of said first frame member for coupling said trailer to a vehicle, a second elongated frame member including substantially parallel spaced side beams and having a front and a rear end, said second frame member being attached intermediate its ends to said first frame member adjacent said rear end of said first frame member for pivotal movement about a generally horizontal axis relative to said first frame member, said front end of said second frame membEr having means for engaging said side beams of said first frame member at substantially parallel points intermediate the ends of said first frame member so that, when said second frame member pivots about said axis in response to the weight of a load supported by said rear end of said second frame member, said engaging means on said front end of said second frame member and transmit an upwardly directed force thereto proportional to the weight of the load, said trailer structure further comprising a wheel assembly attached to one of said frame members proximate to said pivot axis, said means for engaging said side beams of said first frame member comprising a rigid beam connected to said front end of said second frame member and extending generally transverse to said side beams of said second frame member.
Claim 3
Dependent Claim
50 words
The trailer structure as claimed in claim 1 wherein said first and second frame members are substantially rectangularly shaped with the perpendicular distance between said side beams of said first frame member being such that said second frame member is positionable between said side beams of said first frame member.
Claim 4
Dependent Claim
20 words
The trailer structure as claimed in claim 1 wherein said second frame member is selectively positionable transversely of said axis.
Claim 5
Dependent Claim
57 words
The trailer structure as claimed in claim 1 wherein said side beams of said first frame member have downwardly facing surface portions and said rigid beam on said front end of said second frame member has laterally spaced upwardly facing surface portions for contacting respectively said surface portions on said side beams of said first frame member.
Claim 6
Dependent Claim
30 words
The trailer structure as claimed in claim 4 wherein means are provided for detachably connecting said respective surface portions subsequent to the positioning of a load on said trailer structure.
Claim 7
Dependent Claim
227 words
A trailer structure for supporting a load comprising a first elongated frame member including substantially parallel spaced side beams extending from the front end of said first frame member to the rear end thereof, coupling means at said front end of said first frame member for coupling said trailer to a vehicle, a second elongated frame member including substantially parallel spaced side beams and having a front and a rear end, said second frame member being attached intermediate its ends to said first frame member for pivotal movement about a generally horizontal axis relative to said first frame member, said front end of said second frame member having means for engaging said side beams of said first frame member at substantially parallel points intermediate the ends of said first frame member so that, when said second frame member pivots about said axis in response to the weight of a load supported by said rear end of said second frame member, said engaging means on said front end of said second frame member will contact said side beams of said first frame member and transmit an upwardly directed force thereto proportional to the weight of the load, said trailer structure further comprising a wheel assembly attached to one of said frame members proximate to said pivot axis, said second frame member being selectively positionable transversely of said axis.
Claim 8
Dependent Claim
227 words
A trailer structure for supporting a load comprising a first elongated frame member including substantially parallel spaced side beams extending from the front end of said first frame member to the rear end thereof, coupling means at said front end of said first frame member for coupling said trailer to a vehicle, a second elongated frame member including substantially parallel spaced side beams and having a front and a rear end, said second frame member being attached intermediate its ends to said first frame member for pivotal movement about a generally horizontal axis relative to said first frame member, said front end of said second frame member having means for engaging said side beams of said first frame member at substantially parallel points intermediate the ends of said first frame member so that, when said second frame member pivots about said axis in response to the weight of a load supported by said rear end of said second frame member, said engaging means on said front end of said second frame member will contact said side beams of said first frame member and transmit an upwardly directed force thereto proportional to the weight of the load, said trailer structure further comprising a wheel assembly attached to one of said frame members proximate to said pivot axis, said second frame member being selectively positionable transversely of said axis.
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) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |