P

Inventor

HARMS LOUIS C

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

PARKER HANNIFIN CORP

6 patents
US6422533B1Jul 23, 2002

High force solenoid valve and method of improved solenoid valve performance

PARKER HANNIFIN CORP67 citations95
US6286535B1Sep 11, 2001

Proportional pressure control valve

PARKER HANNIFIN CORP45 citations95
US6571828B2Jun 3, 2003

Proportional pressure control valve

PARKER HANNIFIN CORP25 citations92
US6481463B1Nov 19, 2002

Control valve with mechanical feedback and method for controlling fluid flow

PARKER HANNIFIN CORP28 citations92
US6405746B2Jun 18, 2002

Proportional pressure control valve

PARKER HANNIFIN CORP11 citations73
US6926033B2Aug 9, 2005

Proportional pressure control valve

PARKER HANNIFIN CORP3 citations62

FLUID POWER IND INC

3 patents
US5836335ANov 17, 1998

Proportional pressure control valve

FLUID POWER IND INC78 citations95
US5598794AFeb 4, 1997

High accuracy automatically controlled variable linear seed spacing planting apparatus

FLUID POWER IND INC58 citations94
US5461903AOct 31, 1995

Apparatus and method for detecting leak in hydraulic system

FLUID POWER IND INC33 citations91

UNITED TECHNOLOGIES AUTOMOTIVE

1 patent
US4873817AOct 17, 1989

Electrically controlled pressure relief valve system and method

UNITED TECHNOLOGIES AUTOMOTIVE41 citations92

AMBAC IND

1 patent
US4121610AOct 24, 1978

Electrically operated proportional flow control hydraulic valve and manually operable remote control device therefor

AMBAC IND104 citations91

HARMS LOUIS C

1 patent
US8398004B2Mar 19, 2013

Hydraulic drive system for sand and salt spreaders

HARMS LOUIS C1 citations45