Elliptical motion drive device for a step screen

Details Elliptical motion drive device for a step screen Elliptical motion drive device for a step screen

2006-04-21

2008-08-26

Upton, Christopher (Department: 1797)

Liquid purification or separation

Structural installation

Flume stream type

C210S158000, C210S159000, C210S357000, C210S389000, C210S541000, C198S750800, C074S025000, C074S055000, C074S567000

Reexamination Certificate

active

07416658

ABSTRACT:
Disclosed herein is an elliptical motion drive device for use in a step screen. The elliptical motion drive device comprises first and second eccentric wheels coupled to a single drive shaft to be eccentrically positioned to each other. Upon rotation of the drive shaft, the first and second eccentric wheels rotate and move along guide rails formed in different directions from each other to transversely and longitudinally rotate movable lattice plates connected to a movable frame of the step screen, thereby achieving elliptical motion of the movable lattice plates.

REFERENCES:
patent: 1773576 (1930-08-01), Downes
patent: 4819592 (1989-04-01), van Ligten
patent: 5032262 (1991-07-01), Wallander
patent: 5098561 (1992-03-01), Grabbe
patent: 5456826 (1995-10-01), Mellegard
patent: 6139728 (2000-10-01), Huber
patent: 6245225 (2001-06-01), Giersberg
patent: 6490941 (2002-12-01), Hur

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