Peerless Limited

501 Peerless Page Industries Ltd.

John Stuart Gregg

Ian Edward Trip

A duplex trailing arm chassis support system has two longitudinal trailing arm members disposed on respective sides of the vehicle chassis and a structurally connecting cross member joining the two trailing arms to couple the movement of the two respective arms. Resilient cushioning members extend between each of the trailing arms and the underside of the vehicle chassis or between the connecting member and the vehicle chassis to provide resilient support to the vehicle chassis. Each trailing arm carries a wheel axle having wheels on both ends of the axle, each of the wheel axles being pivotally mounted to its respective trailing arm for rotational movement about the longitudinal axis of the trailing arm, allowing the axles to rock from side to side.

Trailing arm vehicle suspension system

A suspension system connects a wheel axle to a vehicle frame and includes a trailing arm connected at one end to the wheel axle. A pair of extension members are connected to the other end of the trailing arm and extend laterally in opposite directions along a pivot axis perpendicular to the longitudinal axis of the arm. A pair of supports extend along the pivot axis and are connected to the frame and rotatably connected to the extension member to permit pivotal movement of the trailing arm with respect to the frame about the pivot axis. The supports and extension members are dimensioned to provide a gap between the supports and extension members. A pair of resiliently deformable bearing members are interposed between the extension members and the supports in the gap. The gap and the bearing members are of sufficient width to permit limited rotational movement of the axle with respect to the frame about a vertical axis.

Vehicle suspension system

The invention provides a chassis for a truck trailer which can be manufactured for less cost, and can be lighter, for the same strength, as a conventional twin I-beam trailer as used in fifth wheel logging truck applications. The chassis of the invention has an elongated beam member having a generally horizontal top wall, a pair of laterally spaced apart side wall portions with upper margin portions which are inclined inwardly and upwardly to merge continuously with the top wall portion. Lower margin portions of the side wall portions have flanges which have inner edges spaced apart to accommodate service conduits, and other components. A plurality of transversely extending bunk means are spaced apart longitudinally along the beam member at respective stations. The inwards inclination of the upper margin portions reduces chances of a loading grapple fouling with edges of the beam member when loading and unloading logs from the trailer. Furthermore, the service conduits and other components are protected from accidental damage during loading.

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Summerland, Canada

John Stuart Gregg