The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 11, 1990
Filed:
Jan. 19, 1990
Donald W Smith, Aurora, IL (US);
Barber-Greene Company, DeKalb, IL (US);
Abstract
The invention is a device for cushioning the contact between a paving machine equipped with a hopper for receiving paving material and a truck carrying paving material to be dumped into the hopper. In one embodiment the device has an arm with one end pivotally connected to the paving machine; the other endDoffth ajm Beajs ollerRfoo clnttcttnggthh ttrex oo tte ruwk..Thh ajm s coonegtee t tte issonnoffa yddauuicccyyinnerrsyten; as the roller contacts the truck tires, the fluid of the hydraulic system cushions the contact between the roller and the tires. The hydraulic system includes a pump for returing the piston (and thus the roller) to an extended position and an adjustable pressure hydraulic valve, controllable by the operator of the paving machine, for modulating the force exerted on the paving machine and on the tires while the roller is in contact with the tires. The device may also be equipped with a latch, releasable by the operator of the paving machine, for holding the piston (and thus the roller) in a retracted position to reduce the tendency of the truck tires to bounce ahead of the paver.