Title:
PUMP DEVICE
Document Type and Number:
Japanese Patent JP2009065762
Kind Code:
A
Abstract:
To provide a pump device that achieves a pump without drive unit without use of a moving valve in a pump casing.
Direct current is passed through a coil 22 wound on a doughnut-shaped pump casing to cause a recirculating flow 24 containing a powdery magnetic substance 26 in the cavity in the pump casing 12. Water is thereby pumped.
Inventors:
KISHIMOTO KOICHI
Application Number:
JP2007230541A
Publication Date:
March 26, 2009
Filing Date:
September 05, 2007
Export Citation:
Assignee:
NIDEC SHIBAURA CORP
International Classes:
H02K44/04; F04B9/00
Attorney, Agent or Firm:
Tamako Tsutada
Masato Tsuda
Tetsuji Nakamura
Katsuyuki Tomita
Masato Tsuda
Tetsuji Nakamura
Katsuyuki Tomita