Molecular drag vacuum pump

Details Molecular drag vacuum pump Molecular drag vacuum pump

1992-12-03

1994-10-11

Look, Edward K.

Rotary kinetic fluid motors or pumps

Smooth runner surface for working fluid frictional contact

4174234, F01D 136

Patent

active

053541723

ABSTRACT:
A vacuum pump of the molecular drag type comprising a pump body, a cylindrical element adapted for rotation within the pump body about its longitudinal axis and having a plurality of circumferential slots defined in its surface which are substantially perpendicular to the longitudinal axis, a stator element held stationary with regard to the pump body and having projections extending into the slots substantially to fill the slots in the vicinity of the stator, wherein at least some of the surfaces of the stator projections adjacent the walls of the slots are coated with an abradable material.

REFERENCES:
patent: 3628894 (1971-12-01), Ferguson, Jr.
patent: 4389119 (1983-06-01), Valsamis et al.
Harris, Nigel S., Modern Vacuum Practice, 1989, pp. 146-151.

Affiliated with

Also associated with

Rating

Molecular drag vacuum pump does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1654529