Rotating spray head for spray urethane
AssigneeLear Corporation
InventorsGlenn Cowelchuk, Andrew P. Mellentine, Joe T. Donatti, Robert Adams
Life of this patent
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Abstract
A system and method for spray application of polyurethane used to spray form an article is disclosed. A spray nozzle is rotated as the polyurethane composition is sprayed onto a mold surface to apply a swath of polyurethane to the mold surface. The spray nozzle may be of an internal mixing or external mixing type that is moved relative to a mold surface in a path to create a skin layer with multiple partially overlapping swaths being applied in multiple passes. A motor and gear drive are used to rotate the nozzle tip and associated structure.
Claims5
A system for forming a polyurethane layer on a surface, comprising:
- a spray gun for spraying a liquid reaction mixture comprising polyol and isocyanate, said mixture being sprayed in form of a flat fan shaped spray pattern onto a mold surface to apply a swath of the mixture to the mold surface;
- a motor;
- a drive gear connected to the motor and a driven gear connected to the spray gun that connect the motor to the spray gun to rotate the spray gun as it sprays the mixture;
- and
- moving the spray gun relative to the mold surface in a path to cover the mold surface, whereby a layer is formed that has a relatively consistent thickness.
Dependencies are inferred from the claim text.