Andrew H. Nippert

Fluid translating device

Method and apparatus for determining the position of an armature in an electromagnetic actuator

System and method for accumulating hydraulic fluid

Method and apparatus for determining the position of an armature in an electromagnetic actuator by measuring the driving voltage frequency

Digital controlled fluid translating device

Pressure compensated flow amplifying poppet valve

Method and apparatus for determining the position of an armature of an electromagnetic actuator in response to the magnitude and time derivative of the actuator coil current

Hydraulic system pump charging and recirculation apparatus

Steering resistance device

Actuator which uses fluctuating pressure from an oil pump that powers a hydraulically actuated fuel injector