P

Inventor

LOUP RONALD L

US14 patents
⚠️ This page may combine multiple inventors who share the name “LOUP RONALD L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DOUBLE A PROD CO

6 patents
US4170214AOct 9, 1979

Hydraulic valve module

DOUBLE A PROD CO73 citations93
US4308891AJan 5, 1982

Terminal blocks and indicator for solenoid valves

DOUBLE A PROD CO38 citations92
US4353394AOct 12, 1982

Solenoid operated directional valve with detent mechanism

DOUBLE A PROD CO16 citations73
US4574843AMar 11, 1986

Solenoid valve override cartridge

DOUBLE A PROD CO18 citations71
US4185661AJan 29, 1980

Solenoid operated directional valve with detent mechanism

DOUBLE A PROD CO16 citations70
US4194173AMar 18, 1980

Solenoid construction

DOUBLE A PROD CO5 citations59

KOOMEY INC

4 patents
US4699355AOct 13, 1987

Fail-safe fluid piloted valve positioner with hydromechanical position lock

KOOMEY INC28 citations92
US4554940ANov 26, 1985

Pressure reducing and regulating valve

KOOMEY INC29 citations92
US4444216AApr 24, 1984

Pressure reducing and regulating valve

KOOMEY INC37 citations92
US4475568AOct 9, 1984

Pressure reducing and regulating valve

KOOMEY INC24 citations81

DOUBLE A PRODUCTS COMPANY

4 patents
USD273699SMay 1, 1984

Solenoid operated valve

DOUBLE A PRODUCTS COMPANY11 citations71
US4418720ADec 6, 1983

Solenoid operated directional valves having modular construction

DOUBLE A PRODUCTS COMPANY20 citations71
US4406307ASep 27, 1983

Directional valve with spool transfer loop

DOUBLE A PRODUCTS COMPANY13 citations70
US4375226AMar 1, 1983

Valve body for solenoid operated directional valve

DOUBLE A PRODUCTS COMPANY6 citations62