Patent ID: 9296017
Filing Date: 2016-03-29
CPC Classification: B07B,F16C

Claim Text:
1. A material screening apparatus adaptable between a reduced-bearing mode and an additional-bearing mode, the apparatus comprising: a screen box comprising at least one screen deck; a frame, the screen box being coupled to the frame; a rotatable shaft coupled to the screen box for imparting vibrational and/or oscillatory motion to said at least one screen deck; drive means operable to impart rotational motion to the shaft; and bearings coupling said shaft to said screen box, said bearings providing a reduced-bearing mode and an additional-bearing mode wherein a first set of at least one of said bearings couples said shaft to said screen box in said reduced-bearing mode, wherein, in the additional-bearing mode only, the first set and a second set of at least one of said bearings couples the shaft to the frame.