Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Twin shaft vacuum pump with purge gas inlet

Twin shaft vacuum pump with purge gas inlet

US Patent 5046934 · Granted Sep 10, 1991

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Muffler1995
Dry-running vacuum pump1994
Multiple connection for rotation vacuum pumps1992
Method and apparatus for delivering oil to a multi-stage pump1991
Method for operating a twin shaft vacuum pump according to the Northey principle1991
Multiple connector for rotation vacuum pumps1991
Multistage rotary piston vacuum pump having sleeves to fix shaft positions1991
Multistage vacuum pump with bore for fouling removal1990
Twin-shaft, multiple-stage vacuum pump with the shafts vertically disposed1990
Filter cartridge with series elements for chemical and mechanical filtration1989
Apparatus for purifying hydrogen-free fluorinated lubricants1988
Vacuum pump and trap combination1986