Asphalt paver having auger extensions for extended screeds
First Claim
1. An apparatus for placing a mat of asphaltic material, comprising a tractor unit having a first width and a direction of travel;
- said tractor unit further having;
a) hopper means for receiving and containing the asphaltic material;
b) conveyor means for conveying the asphaltic material from said hopper means and for discharging the asphaltic material from said tractor unit;
c) distributing means for laterally distributing the asphaltic material and for placing the asphaltic material in a mat having a second width substantially greater than said first width, wherein at least a portion of said distributing means is rotated about a substantially horizontal axis oriented non-perpendicularly to said direction of travel said distributing means further including a pair of opposing inner augers approximately spanning said first width and a pair of outer augers, each outer auger being drivingly and pivotally connected end-to-end to a respective one of said inner augers; and
d) screed means for compacting the mat of asphaltic material.
8 Assignments
0 Petitions
Accused Products
Abstract
An improved extended auger arrangement and an improved asphalt paver with a tractor unit and a screed assembly, including a main screed and extendable screeds, having such an improved extended auger arrangement, the extendable screeds extending laterally outwardly from the main screed such that the screed assembly spans a width substantially greater than the width of the tractor unit. The extended auger arrangement includes a pair of opposing, oppositely pitched, inner augers, rotatable about a substantially horizontal axis oriented perpendicularly to the direction of travel of the tractor unit and approximately spanning the width of the tractor unit, and a pair of oppositely pitched outer augers, rotatable about respective horizontal axes oriented substantially non-perpendicularly to the direction of travel of the tractor unit and approximately spanning the difference between the width of the tractor unit and the width of the screed assembly. Each of the outer augers is drivingly and pivotally connected by a universal joint to a respective one of the inner augers. A supporting structure provides fore-and-aft support for the outer augers.
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Citations
21 Claims
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1. An apparatus for placing a mat of asphaltic material, comprising a tractor unit having a first width and a direction of travel;
- said tractor unit further having;
a) hopper means for receiving and containing the asphaltic material; b) conveyor means for conveying the asphaltic material from said hopper means and for discharging the asphaltic material from said tractor unit; c) distributing means for laterally distributing the asphaltic material and for placing the asphaltic material in a mat having a second width substantially greater than said first width, wherein at least a portion of said distributing means is rotated about a substantially horizontal axis oriented non-perpendicularly to said direction of travel said distributing means further including a pair of opposing inner augers approximately spanning said first width and a pair of outer augers, each outer auger being drivingly and pivotally connected end-to-end to a respective one of said inner augers; and d) screed means for compacting the mat of asphaltic material. - View Dependent Claims (2, 3, 4)
- said tractor unit further having;
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5. An apparatus for an asphalt paver adapted to produce a mat of asphaltic material wherein the asphalt paver has a first width, an extendable screed assembly having a second width substantially greater than said first width, a direction of travel, and means for depositing the apshaltic material in the path of the extendable screed assembly wherein a width of the apshaltic material being deposited is not greater than the first width;
- said means for distributing comprising;
auger means for laterally distributing the apshaltic material such that a mat of the asphaltic material is formed in front of the extendable screed assembly wherein the mat has a width approximately equal to the second width;
said auger means having at least one first auger oriented generally perpendicular to the direction of travel of the asphalt paver and at least one second auger oriented substantially non-perpendicularly to the direction of travel of the asphalt paver and being drivingly connected end-to-end to said first auger. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14)
- said means for distributing comprising;
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15. An asphalt paver adapted for movement along a path, comprising:
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a frame; an asphalt hopper supported by the frame for receiving asphaltic material; a conveyor for discharging the apshaltic material from the hopper; an inner auger having a pair of outer ends, the inner auger being adapted to laterally distribute the asphaltic material to a first width; an outer auger having an inner end drivingly connected by a flexible joint to an adjacent one of the inner auger outer ends, the flexible joint permitting the outer auger to be positioned at an angle relative to the inner auger, the outer auger being adapted to laterally distribute the apshaltic material to a second width greater than the first width; and a screed assembly supported by the frame, the screed assembly being extendable to the second width.
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16. An asphalt paver adapted for movement along a path, comprising:
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a frame; an asphalt hopper supported by the frame for receiving asphaltic material; a conveyor for discharging the apshaltic material from the hopper; an inner auger having a pair of outer ends, the inner auger being adapted to laterally distribute the asphaltic material to a first width; a pair of outer augers, each outer auger having an inner end drivingly connected to an adjacent one of the inner auger outer ends, each of the outer augers having an outer end and being rotatable about a generally horizontal axis disposed at an angle relative to the path and being oriented so that the outer auger outer ends are disposed rearwardly of the outer auger inner ends, the outer augers being adapted to laterally distribute the apshaltic material to a second width greater than the first width; and an screed assembly supported by the frame, the screed assembly being extendable to the second width. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification