B - Operations – Transporting – 07 – B
Patent
B - Operations, Transporting
07
B
B07B 1/46 (2006.01) B07B 1/00 (2006.01) B07B 1/40 (2006.01)
Patent
CA 2447836
The vibrating screen has a frame, a screen box, two pairs of springs supporting the screen box over the frame and a driven eccentric shaft mounted under the screen box. The vibrating screen is characterized by a loading pan affixed to the upper end of the screen box. The loading pan has a central region over the upper springs such that a flexion of the structural members under the loading pan is minimum. The loading pan is wider than the screen box and has sloped sides forming a funnel on the upper end of the screen box to retain the side portions of a load until most of the central portion has been moved to the screen box. In another aspect, each spring has torsion bushings therein, with a pair of arms joining the torsion bushings and forming an angle pointing toward the lower end of the screen box.
Macnaughton Douglas J.
P. Eng. Theriault Mario D.
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