Apparatus for filling a trench in a paved surface
First Claim
1. A machine for introducing selected course material into a trench in an existing, paved surface, said machine comprising a frame which carries:
- (A) application means for depositing paving material to the trench to a desired level, said application means comprising;
1. first and second guide rails resiliently biased outwardly to bear against opposite sides of the trench and follow the contours of the trench;
2. a strike-off gate extending across the trench between said guide rails, said strike-off gate comprising;
a. a plurality of strike-off gate sections, at least one of said gate sections being movable in response to mutual lateral movement of said guide rails, said strike-off gate sections overlapping and movable relative each other to accommodate changes in width of the trench sensed by said guide rails as they follow the contour of the trench;
b. height adjustment means for establishing the effective vertical position of each said strike-off gate section;
(B) feed means comprising at least one hopper adapted to receive selected course material from a source of supply as needed;
(C) dispensing means for transferring the selected course material from said at least one hopper into the trench.
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Accused Products
Abstract
The improvement to machines for filling trenches in paved surfaces has two hoppers hydraulically operated to deposit selected course material directly into the trench from a substantially vertical drop in substantially equal quantities from each side. At least one of the hoppers moves responsive to the movement of guide rails that follow the contours of the trench. A vertically adjustable strike-off plate, adapted to define a course level above or below the level of the surrounding paved surface, has two components, at least one of which moves relative the other responsive to the guide rails to accommodate trench width, and includes apparatus for laying down a window of paving material during a final pass and pushing it into a mini-trench created by intrusion of the guide rails.
33 Citations
13 Claims
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1. A machine for introducing selected course material into a trench in an existing, paved surface, said machine comprising a frame which carries:
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(A) application means for depositing paving material to the trench to a desired level, said application means comprising; 1. first and second guide rails resiliently biased outwardly to bear against opposite sides of the trench and follow the contours of the trench; 2. a strike-off gate extending across the trench between said guide rails, said strike-off gate comprising; a. a plurality of strike-off gate sections, at least one of said gate sections being movable in response to mutual lateral movement of said guide rails, said strike-off gate sections overlapping and movable relative each other to accommodate changes in width of the trench sensed by said guide rails as they follow the contour of the trench; b. height adjustment means for establishing the effective vertical position of each said strike-off gate section; (B) feed means comprising at least one hopper adapted to receive selected course material from a source of supply as needed; (C) dispensing means for transferring the selected course material from said at least one hopper into the trench. - View Dependent Claims (2, 3, 4, 11, 12)
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5. A machine for introducing selected course material into a trench in an existing, paved surface, said machine comprising a frame which carries:
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(A) application means for depositing paving material to the trench to a desired level, said application means comprising; 1. first and second guide rails resiliently biased outwardly to bear against opposite sides of the trench; 2. a strike-off gate extending across the trench between said guide rails, said strike-off gate comprising; a. a plurality of strike-off gate sections, at least one of said gate sections being movable in response to lateral movement of said guide rails, said strike-off gate sections overlapping and movable relative each other to accommodate changes in width of the trench; b. height adjustment means for establishing the effective vertical position of each said strike-off gate section;
the range of adjustment afforded by said height adjustment means including effective vertical positions of said strike-off gate sections both above and below the level of the existing, paved surface.(B) feed means comprising at least one hopper adapted to receive selected course material from a source of supply as needed; (C) dispensing means for transferring the selected course material from said at least one hopper into the trench. - View Dependent Claims (6, 7, 8, 9, 10, 13)
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Specification