Scott Allen Graham

US Patent:

6676382, Jan 13, 2004

Filed:

Aug 29, 2002

Appl. No.:

10/233832

Inventors:

Harold Leighton - Tega Cay SC
Philip A. Mayleben - Edgewood KY
Scott R. Graham - West Chester OH
Buford A. Cooper - Sunman IN

Assignee:

Campbell Hausfeld/Scott Fetzer Company - Harrison OH

International Classification:

F04B 4904

US Classification:

417 40, 417 12, 417 18, 417 441, 417 63, 417280, 4174233

Abstract:

Motor speed, motor amps, float position and elapsed run time are monitored to determine whether a sump pump is in a normal condition, a jammed condition, an inadequate pumping rate condition, a dry running condition or a stuck float condition. A processor is configured to increase the motor speed in response to an inadequate pumping rate condition, and to rapidly energize the motor clockwise and counterclockwise in response to a jammed condition or a stuck float condition. The processor provides signals to a display for displaying information about the condition that the pump is in. The pump is set up to receive power from either an AC power source or a battery power source. Availability of the AC power source is monitored and the pump is switched to operate from the battery power source when AC power is unavailable.