Road structure – process – or apparatus – Apparatus – Automatic control
Patent
1981-08-10
1984-08-14
Leppink, James A.
Road structure, process, or apparatus
Apparatus
Automatic control
404 72, 404120, E01C 1922
Patent
active
044653972
ABSTRACT:
To lay a running track, a resilient particulate material is spread over a substrate of a given width. Pressure is applied individually downwardly on the material over a plurality of respective segments of the width, as the material is smeared over and amongst the segments to form a bonded layer of said material which exhibits a continuous and even upper surface across said width. This is accomplished by means of a machine that includes an elongated frame of a length sufficient to span a plurality of lanes of a running track. A plurality of successively-hinged individually-articulatable platens depend from and are distributed along the frame. Each platen has a length corresponding generally to the width of respective ones of the lanes. Means included with respect to each of the platens enables the application of pressure on the material toward the underlying substrate of the track. Also included are means for reciprocating the platens laterally and generally across and between the respective ones of the lanes as well as means for moving the machine along the track.
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patent: 4197032 (1980-04-01), Miller
Hollon Blake D.
Hollon Edmund D.
Drake Hugh H.
Hjorth Beverly E.
Leppink James A.
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