Screw vacuum pump having a decreasing pitch for the screw member

Details Screw vacuum pump having a decreasing pitch for the screw member Screw vacuum pump having a decreasing pitch for the screw member

1995-08-22

1997-09-16

Vrablik, John J.

Rotary expansible chamber devices

Multistage

Interengaging rotary members

418150, 4182011, F04C 1816, F04C 2502

Patent

active

056673701

ABSTRACT:
A screw displacement pump has a chamber. Inlet and outlet are provided for the admission of gas to and discharge of gas from the chamber. Intermeshing screw members rotatably mounted within the chamber for delivering the gas from the inlet to outlet, wherein the pitch of the screw members decrease continuoulsy from the inlet end thereof to the outlet end thereof to cause compression of the gas being delivered. The continuous reduction in the pitch distance from the inlet end to the outlet end is generated by the following relationship:

REFERENCES:
patent: 2691482 (1954-10-01), Ungar
patent: 2705922 (1955-04-01), Rathman
patent: 3424373 (1969-01-01), Gardner
patent: 3807911 (1974-04-01), Caffrey
patent: 4224015 (1980-09-01), Nagata
patent: 4714418 (1987-12-01), Matsubara et al.

Affiliated with

Also associated with

Rating

Screw vacuum pump having a decreasing pitch for the screw member does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Screw vacuum pump having a decreasing pitch for the screw member, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screw vacuum pump having a decreasing pitch for the screw member will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-213894