US4546969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer for an articulated vehicle
Assignee: Individual
•
Filing: 1983-01-28
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Granted: 1985-10-15
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Expires: 2003-01-28
Abstract
Abstract A low floored trailer has a base frame welded to wheel arches and flooring formed over the major part of corrugated sheet welded to the base frame and overlaid with wood, between the wheel arches i.e. above the wheel axles, the floor is formed by a flat plate. Upright corrugated walls are also welded to the base frame. The axles are supported by springs carried by cross beams in the wheel arches to that the load carried by the trailer is transmitted through the springs to the base frame in the vicinity of the wheel arches and into the upright walls. Because of the lowness of the floor a larger than usual internal height is obtained, which is important especially where the overall height of the trailer is restricted by regulations.
Inventors
- 👤 Frederick G. Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:53
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/025; B60P3/0252; B60P3/0255; B60P3/14; B62; B62D; B62D53/00; B62D53/04; B62D53/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
216 words
A road trailer comprising: (a) a pair of transversely spaced wheel arches carrying at least one wheel axle via spring means; (b) a horizontally disposed base frame attached to said wheel arches substantially adjacent to the level of said axle so that said base frame is below the level of the tops of wheels attached to each end of said axle; (c) a floor supported by said base frame; and (d) corrugated upright wall members supported by said base frame for supporting a roof frame, the weight of the load carried by said trailer being transmitted through said spring means to said base frame in the vicinity of said wheel arches and into said upright wall members; (e) said floor comprising a major portion formed of corrugated sheet material attached to said base frame and a minor portion disposed between said wheel arches and above said wheel axle and being formed of flat steel plate having an upper surface which is level with the upper surface of said major portion and an underside disposed substantially higher than an underside of said major portion and only a short distance above said wheel axle to allow for vertical movement of said wheel axle, thereby to provide a low-lying floor unobstructed along its length apart from each wheel arch.
Claim 2
Dependent Claim
216 words
A road trailer comprising: (a) a pair of transversely spaced wheel arches carrying at least one wheel axle via spring means; (b) a horizontally disposed base frame attached to said wheel arches substantially adjacent to the level of said axle so that said base frame is below the level of the tops of wheels attached to each end of said axle; (c) a floor supported by said base frame; and (d) corrugated upright wall members supported by said base frame for supporting a roof frame, the weight of the load carried by said trailer being transmitted through said spring means to said base frame in the vicinity of said wheel arches and into said upright wall members; (e) said floor comprising a major portion formed of corrugated sheet material attached to said base frame and a minor portion disposed between said wheel arches and above said wheel axle and being formed of flat steel plate having an upper surface which is level with the upper surface of said major portion and an underside disposed substantially higher than an underside of said major portion and only a short distance above said wheel axle to allow for vertical movement of said wheel axle, thereby to provide a low-lying floor unobstructed along its length apart from each wheel arch.
Claim 3
Dependent Claim
40 words
A trailer according to claim 1 characterised in that an intermediate floor is provided at a location between the face frame and the roof frame, said intermediate floor being formed of corrugated members welded to the sides of the trailer.
Claim 4
Dependent Claim
21 words
A trailer according to claim 2, characterised in that each of said first-mentioned floor and intermediate floor is overlaid with wood.
Claim 5
Dependent Claim
50 words
A trailer as claimed in claim 1 characterised in that a counterbalance door is provided in at least one of said upright walls and comprises upper and lower door panels pivotal horizontally and interconnected by a linkage so that movement of one panel causes corresponding movement of the other panel.
References Cited (Backward Citations)
US2045166A
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FR53871E
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FR1109700A
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FR1157946A
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Cited
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Cited
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Cited
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Cited
US3776400A
Cited
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Cited
US4024671A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-14 | 1989-04-15 | 1989-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-14 | 1993-04-15 | 1993-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-14 | 1997-04-15 | 1997-10-15 | $7700.00 | Window Closed / Lapsed |