Trailer assembly and method

Land vehicles – Wheeled – Articulated vehicle

Patent

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Details

280403, 280432, 280433, 2804761, B62D 5300, B62D 5310, B60J 512

Patent

active

048983993

ABSTRACT:
A trailer assembly including a cab, a first trailer hitched to the cab, a second trailer having a dolly hitched to the first trailer, and a third trailer having a dolly hitched to the second trailer. Each dolly has a framework with a front hitch and has a wheel assembly fixedly connected to the framework. The wheel assembly has an axle and four wheels and leaf springs. The dolly has a thrust bearing unit with a bearing axis. The thrust bearing unit has a bottom race fixedly connected to the framework and has a top race angularly displacable relative to the bottom race about the bearing axis. The top race has a pivot plate with a horizontal pivot axis. The pivot plate has trunnions with pivot pins for pivoting of the pivot plate about the horizontal pivot axis relative to the top race. The pivot plate has a hinge groove for connecting to a hinge pin under the overlapping trailer. The thrust bearing unit has brake means, operated by a driver in the cab by controlling a fluid meter. The brake means has a brake disc fixedly connected to the top race, and has a brake shoe fixedly connected to the framework. The pivot plate has a latching groove and a spring-biased lock pin for latching the pivot plate to the underside of its overlapping trailer. The first, second and third trailers each have a pair of front doors with respective hinged rear platforms in order to load all trailers at the same time from a loading platform through the third trailer rear door opening.

REFERENCES:
patent: 3151880 (1964-10-01), Black
patent: 3328051 (1967-06-01), Hope et al.
patent: 3556560 (1971-01-01), Adams
patent: 3637236 (1972-01-01), Shimoji et al.
patent: 3874699 (1975-04-01), Hayes et al.
patent: 4030171 (1977-06-01), Arguin
patent: 4526395 (1985-07-01), Arguin
patent: 4778193 (1988-10-01), Torcomian

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