Vacuum pumps

Details Vacuum pumps Vacuum pumps

1996-12-09

1998-06-30

Verdier, Christopher

Rotary kinetic fluid motors or pumps

Smooth runner surface for working fluid frictional contact

415188, 415192, 415195, 4152085, F01D 136

Patent

active

057723958

ABSTRACT:
A vacuum pump assembly which comprises at least two cylinders of different diameters and arranged coaxially relative to each other to define an annular space therebetween and a helical member positioned within the space to define a helical path between the cylinders. Rotation of the cylinders is effected relative to the helical member, or vice versa, about their longitudinal axis.

REFERENCES:
patent: 2730297 (1956-01-01), Van Dorsten et al.
patent: 3749528 (1973-07-01), Rousseau et al.
patent: 4023920 (1977-05-01), Bachler et al.
patent: 4732529 (1988-03-01), Narita et al.
patent: 4746265 (1988-05-01), Luijten
patent: 4806074 (1989-02-01), Burger et al.
patent: 5165872 (1992-11-01), Fleischmann et al.
patent: 5358373 (1994-10-01), Hablanian
patent: 5553998 (1996-09-01), Muhlhoff et al.

Affiliated with

Also associated with

Rating

Vacuum pumps does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vacuum pumps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vacuum pumps will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1852693