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Self-propelled paver

  • US 3,901,616 A
  • Filed: 07/22/1974
  • Issued: 08/26/1975
  • Est. Priority Date: 07/22/1974
  • Status: Expired due to Term
First Claim
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1. A self-propelled paver for asphaltic materials and the like, of the type having suspended components including hopper, lateral material spreading means, and a rear compactor screed on which part of the weight is borne during paving, characterized in having a powered suspension adapted alternatively for paving use, in which the compactor screed bears a substantial portioN of the weight, and for highway travel in which it is raised from the pavement, said suspension comprising levered assemblies at the left and right sides of the paver and mounted pivotally thereto along a common lateral axis forward of the center of gravity, each said levered assembly comprising a plurality of rotatable drive members and including a longitudinally-extending suspension frame having trunnion means to mount to such common lateral axis, and having an axis forward thereof and a rearward axis aft of the center of gravity of the paver, a forward drive member assembly pivotally mounted at said forward axis and a rear drive member mounted at said rear axis, motor means and a power source therefor, chain and sprocket drive means driven thereby connecting said drive members for rotation at the same driving speed, and powered actuator means, operating between the suspension frame and the suspended portions of the paver, to tilt the suspended portions on the trunnion means and raise the rear portions thereof relative to the rear portion of the bogie suspension frame, whereby to permit highway travel.

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