Inventor
CULLMAN JEFF
US4 patents
Patents
4 patentsUS10024341B2Jul 17, 2018
Hydraulic hybrid swing drive system for excavators
PARKER HANNIFIN CORP15 citations79
US9926946B2Mar 27, 2018
Hydraulic hybrid swing drive system for excavators
PARKER HANNIFIN CORP3 citations67
US10819252B2Oct 27, 2020
Adaptive hybrid wireless power generation using piezoelectric element and power beaming in hydraulic systems
PARKER HANNIFIN CORP1 citations59
US11421713B2Aug 23, 2022
Hydraulic hybrid swing drive system for excavators
PARKER HANNIFIN CORP0 citations56