Inventor
CAMPBELL CHESTER D
US8 patents
Patents
8 patentsUS5522231AJun 4, 1996
Apparatus and method for mass flow control of a working fluid
PARKER HANNIFIN CORP30 citations91
US5477701ADec 26, 1995
Apparatus and method for mass flow control of a working fluid
PARKER HANNIFIN CORP22 citations91
US5460349AOct 24, 1995
Expansion valve control element for air conditioning system
PARKER HANNIFIN CORP29 citations91
US5289692AMar 1, 1994
Apparatus and method for mass flow control of a working fluid
PARKER HANNIFIN CORP51 citations91
US5295656AMar 22, 1994
Expansion valve for air conditioning system with proportional solenoid
PARKER HANNIFIN CORP13 citations80
US5660052AAug 26, 1997
Apparatus and method for detecting characteristics of a working fluid
PARKER HANNIFIN CORP15 citations72
US5335513AAug 9, 1994
Apparatus and method for detecting characteristics of a working fluid
PARKER HANNIFIN CORP17 citations72
US5390897AFeb 21, 1995
Expansion valve for air conditioning system with proportional solenoid
PARKER HANNIFIN CORP3 citations61