Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Device for controlling the pressure in the bearings of a roots blower supercharger

Device for controlling the pressure in the bearings of a roots blower supercharger

US Patent 4709682 · Granted Dec 1, 1987

Estimated economic value: $82,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Pressure accumulation system for internal combustion engine2014
Method and apparatus for controlling operation of internal combustion engine, an2006
Fuel discharge preventive device of gas engine1998
Intake device of a two stroke engine with supercharger bypass passage1991
Fluid pump1990
Electromagnetic coupling1988
Rotor assembly of roots pump1988
Apparatus for controlling the proportion of air and fuel in an air-fuel mixture 1984
Apparatus for controlling the proportion of air and fuel in the air-fuel mixture1983
Exhaust gas purifying method of an internal combustion engine1983