US 7,475,793 B2
Bulk bag unloader with flow regulation
Richard C. Wahl, 66 Holton La., Essex Fells, N.J. 07021 (US)
Filed on Oct. 25, 2005, as Appl. No. 11/258,485.
Claims priority of provisional application 60/642043, filed on Jan. 07, 2005.
Prior Publication US 2006/0151525 A1, Jul. 13, 2006
Int. Cl. G01G 13/00 (2006.01)
U.S. Cl. 222—77  [222/55; 222/58; 222/161; 222/181.2; 222/196; 222/198] 5 Claims
OG exemplary drawing
 
1. A bulk bag unloader comprising:
a frame for supporting a bulk bag of particulate materials, a hopper moveably supported on the frame and disposed for receiving a discharge from the bulk bags supported on the frame, an outlet chute mounted to the hopper and having an inlet communicating with an outlet of the hopper and an outlet spaced from the inlet, the outlet chute defining an axis, two vibrator means mounted to the hopper and synchronized with one another for generating vibratory movement of the hopper and the outlet chute in directions substantially parallel to a vertical plane that includes the axis of the outlet chute and for substantially limiting vibrations in all other vertical planes.