Inventor
UNSWORTH PETER J
GB18 patents
⚠️ This page may combine multiple inventors who share the name “UNSWORTH PETER J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ALLEN BRADLEY CO
7 patentsUS5008608AApr 16, 1991
Controller for starting and stopping electric motors
ALLEN BRADLEY CO95 citations95
US5548197AAug 20, 1996
Method and apparatus for determining motor speed using zero crossing times
ALLEN BRADLEY CO50 citations92
US5488281AJan 30, 1996
Method and apparatus for predicting winding failure using zero crossing times
ALLEN BRADLEY CO52 citations92
US4862052AAug 29, 1989
Method for stopping an electric motor
ALLEN BRADLEY CO24 citations92
US4833386AMay 23, 1989
Apparatus and method for braking an electric motor
ALLEN BRADLEY CO33 citations92
US5627447AMay 6, 1997
Method and apparatus for detecting current delay angle from motor terminal voltage
ALLEN BRADLEY CO33 citations91
US5567994AOct 22, 1996
Active harmonic filter with time domain analysis
ALLEN BRADLEY CO67 citations91
ROCKWELL AUTOMATION TECH INC
4 patentsUS6757665B1Jun 29, 2004
Detection of pump cavitation/blockage and seal failure via current signature analysis
ROCKWELL AUTOMATION TECH INC138 citations97
US7308322B1Dec 11, 2007
Motorized system integrated control and diagnostics using vibration, pressure, temperature, speed, and/or current analysis
ROCKWELL AUTOMATION TECH INC174 citations95
US7389278B2Jun 17, 2008
Detection of pump cavitation/blockage and seal failure via current signature analysis
ROCKWELL AUTOMATION TECH INC20 citations91
US6636823B1Oct 21, 2003
Method and apparatus for motor fault diagnosis
ROCKWELL AUTOMATION TECH INC49 citations89