Coating apparatus – Immersion or work-confined pool type – Running length work – longitudinally traveling
Patent
1978-05-08
1981-01-13
McIntosh, John P.
Coating apparatus
Immersion or work-confined pool type
Running length work, longitudinally traveling
118428, 118429, 118DIG17, B05C 312
Patent
active
042443202
ABSTRACT:
This invention relates to an improved prepasted wallpaper trough assembly having a thin walled polystyrene tray with a horizontal bar. The bar is engaged in place in the tray by forcing the ends of the bar downward into channels formed in the ends of the tray. The width of the bar is slightly larger than the width of the channels and therefore the channels resiliently engage the ends of the bar. Thus, the "memory" factor of the plastic which, when deformed attempts to return to its original shape holds the bar in place during the wallpapering operation. The assembly is simple and its shape enables it to be made extremely economically by vacuum forming.
REFERENCES:
patent: D214430 (1969-06-01), Kistler
patent: 951562 (1910-03-01), Hamelstrom
patent: 1356716 (1920-10-01), Hayes
patent: 2613879 (1952-10-01), Carr, Jr.
patent: 3304034 (1967-02-01), Jones
patent: 3575771 (1971-04-01), Padgett
patent: 3913522 (1975-10-01), Light
patent: 3995763 (1976-12-01), Ayres et al.
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