Patents in subclass Pumps/By Controlling Free Piston Internal Combustion Engine
Parent class: Pumps
| Number | Patent title | Issue Date |
|---|---|---|
| 06456508 | Drive apparatus for vibrating-type compressor A drive apparatus for a vibrating-type compressor includes a DC power source as well as an inverter including switching elements. The inverter is adapted to convert direct time to alternating current through alternating switching of the... |
09/24/2002 |
| 06171063 | Control circuit for vibrating compressors for protecting against excessive voltage and temperature A control circuit for vibrating compressors for converting d-c voltage into a-c voltage to supply a-c voltage to a vibrating compressor (1) comprising a MOS-FET transistor (2) for driving the vibrating compressor (1), a timer IC for... |
01/09/2001 |