73249713
Feb 11, 1980
Sep 3, 1985
VIBRATING SCREENS AND SCREEN DECKS FOR USE IN NON-VERTICAL DISPOSTION IN MATERIAL SEPARATING MACHINES IN MINING AND MINERAL PROCESSING; SAID SCREENS AND SCREEN DECKS (1) BEING OF MULTI-APERTURED NON-WOVEN CONSTRUCTION AND (2) BEING MADE OF POLYURETHANE ELASTOMER AND (3) WHEN HAVING SQUARE APERTURES THEREIN THE APERTURE SIDES BEING NO LESS THAN 1/8", WHEN HAVING ROUND APERTURES THEREIN THE APERTURE BEING NO LESS THAN 1/8" IN DIAMETER, AND WHEN HAVING RECTANGULAR APERTURES THEREIN THE LONGER DIMENSION THEREOF BEING NO LESS THAN 1/8"
Machinery