MOBILE APPLICATOR FOR THERMO PAVEMENT MARKING
First Claim
Patent Images
1. A mobile thermoplastic applicator comprising:
- a kettle having walls which define an interior space for melting thermoplastic;
a main gas burner situated beneath the kettle to heat the kettle;
a heat exchanger plenum situated inside the kettle and configured to subdivide the interior space and circulate heated air from the main gas burner; and
a screed die box configured to receive molten thermoplastic from the kettle, and to deposit molten thermoplastic on a surface.
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Accused Products
Abstract
A mobile thermoplastic applicator comprises a kettle, a main gas burner, a heat exchanger plenum, and a screed die box. The kettle has walls which define an interior space for melting thermoplastic. The main gas burner is situated beneath the kettle, and is configured to heat the kettle. The heat exchanger plenum is situated inside the thermoplastic kettle and is configured to subdivide the interior space and circulate heated air from the main gas burner. The screed die box is configured to receive molten thermoplastic from the kettle and deposit that molten thermoplastic on a surface.
9 Citations
20 Claims
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1. A mobile thermoplastic applicator comprising:
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a kettle having walls which define an interior space for melting thermoplastic; a main gas burner situated beneath the kettle to heat the kettle; a heat exchanger plenum situated inside the kettle and configured to subdivide the interior space and circulate heated air from the main gas burner; and a screed die box configured to receive molten thermoplastic from the kettle, and to deposit molten thermoplastic on a surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A mobile thermoplastic applicator comprising:
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a load bearing frame on wheels; a kettle mounted on the load bearing frame, and having hollow walls which define an interior space for melting thermoplastic; a heat exchanger plenum situated inside the kettle and configured to subdivide the interior space; a main gas burner mounted on the load bearing frame beneath the kettle to heat the kettle, and to heat air which circulates through the heat exchanger plenum and the hollow walls of the kettle; an agitator rotatably attached between the heat exchanger and the hollow walls of the kettle, and capable of being swept through the interior space to break down thermal boundaries in melting thermoplastic via radial, axial, and circumferential shearing; an insulated baffle situated between the main gas burner and the kettle; a gas system supplying the main gas burner with combustible gas, and having an automatic gas safety valve; and a screed die box configured to receive molten thermoplastic from the kettle, and deposit molten thermoplastic on a surface. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification