US PATENT SUBCLASS 280 / 677
.~.~.~.~ With walking beam

Current as of: June, 1999
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280 /   HD   LAND VEHICLES

29  DF  WHEELED {21}
80.1  DF  .~ Running gear {20}
104  DF  .~.~ Equalized frame {1}
676  DF  .~.~.~ Tandem axles {7}
677.~.~.~.~ With walking beam {4}
678  DF  .~.~.~.~.~> With fluid-type suspension
679  DF  .~.~.~.~.~> With torsion-type suspension
680  DF  .~.~.~.~.~> With leaf-type suspension
681  DF  .~.~.~.~.~> With rubber-type suspension

DEFINITION

Classification: 280/677

(under subclass 676) Tandem axles wherein each of the tandem axles is associated with or attached, one at either end, to an elongate beam member and the beam member being pivotally connected at or near its center to the frame of the vehicle.