Variable speed waste removal system

Details Variable speed waste removal system Variable speed waste removal system

2006-12-05

2006-12-05

Cecil, Terry K. (Department: 1723)

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

C210S091000, C210S098000, C210S106000, C210S143000, C210S159000

Reexamination Certificate

active

07144500

ABSTRACT:
The invention is directed to a system for removing waste material from a fluid flowing in a channel. This system may incorporate the use of a trap for collecting the waste material while allowing the fluid to pass; a rake for removing the waste material away from the trap; a drive assembly for moving the rake to remove the waste material; a prime mover for operating the drive assembly; and a variable speed controller configured for operating the prime mover over a variable range of speeds.

REFERENCES:
patent: 3601504 (1971-08-01), McBurnett
patent: 4857182 (1989-08-01), Jackson
patent: 4917796 (1990-04-01), Rudzinski
patent: 5074996 (1991-12-01), Galanty et al.
Letter describing two-speed mechanical bar screen system in Chicago, Illinois more than one year prior to the filing of the instant patent application.

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