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US 5,397,199 AGranted
Screed assembly for an asphalt paving machine
AssigneeCaterpillar Paving Products Inc.
InventorsJohn J. Frampton, John A. Grassi, Karen R. Raab, Richard G. Eaton
Life of this patent
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Abstract
A screed assembly has a screed plate that is formed of a material having a thermal conductivity of less than about 25 W/mK, and a thermal barrier material having a thermal conductivity of less than about 0.5 W/mK that substantially covers an upper surface of the screed plate. The low thermal conductance properties of the screed plate obviate the need for auxiliary heating systems to preheat or maintain the screed plate in thermal equilibrium with a paving material.
Claims9
A screed assembly for an asphalt paving machine, comprising:
- a frame member attachable to said asphalt paving machine;
- a screed plate attached to said frame member and having a material contacting surface and a second surface spaced from said material contacting surface, and formed of a material having a thermal conductivity of less than about 25 W/mK;
- and
- a thermal barrier material disposed in contacting relationship with said second surface of the screed plate and substantially covering said second surface and having a thermal conductivity of less than about 0.5 W/mK.
1 more element
Dependencies are inferred from the claim text.