#F04B17/03

HYBRID CEMENTING PUMP

A hybrid cementing apparatus includes a mixing tub; a genset; variable frequency drives electrically coupled to the genset; a transfer switch electrically coupled to the variable frequency drives; ele…

DRIVE·Apr 9·1 min read

F04B17/03 Halliburton Energy Services, Inc.

LINEAR MOTOR, COMPRESSOR EQUIPPED WITH LINEAR MOTOR, REFRIGERATOR EQUIPPED WITH COMPRESSOR, AND VEHICLE AIR SUSPENSION EQUIPPED WITH COMPRESSOR

A linear motor for a compressor having asymmetric load characteristics in both directions of a stroke, improves the service life of a bearing, and reduces a total length of a system. The linear motor …

DRIVE·Aug 29·2 min read

F04B17/03 Hitachi Astemo, Ltd.

CONTROL DEVICE FOR MOTOR UNIT

A control device for a motor unit provided in a vehicle is disclosed. The motor unit includes a motor including multiple coils provided side by side around a motor axis; a transmission mechanism trans…

DRIVE·Apr 1·1 min read

F04B17/03 NIDEC TOSOK CORPORATION

Fault tolerant electric drive system

A fault tolerant electric drive system comprises an alternator (10), a motor controller (12) and an electric motor (14), wherein the alternator (10) and motor (14) each have a plurality of correspondi…

DRIVE·Jul 24·1 min read

F04B17/03 ROLLS ROYCE ENGINE CONTROL SYSTEMS LTD [GB]