Vane pump including rotor having eccentric gravity center

Details Vane pump including rotor having eccentric gravity center Vane pump including rotor having eccentric gravity center

2007-12-11

2007-12-11

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Weight balanced working member or partition

C418S039000, C418S259000

Reexamination Certificate

active

11267302

ABSTRACT:
A vane pump includes a casing having a cylindrical inner bore and a rotor disposed in the inner bore with an eccentric relation thereto, forming a circular pump chamber between the rotor and the inner bore. The circular pump chamber is divided by vanes held in the rotor into pump chambers changing their capacities according to rotation of the rotor. A gravity center of the rotor is shifted from the rotational center of the rotor by removing or adding some weight, so that an imbalanced centrifugal force is applied to the rotor. The driving shaft and the rotor are tightly coupled to each other by the imbalanced centrifugal force even if there is a small gap or dimensional errors therebetween.

REFERENCES:
patent: 4925378 (1990-05-01), Ushiku et al.
patent: 2006/0099102 (2006-05-01), Kato et al.
patent: 1239115 (2002-09-01), None
patent: 5-58888 (1993-08-01), None
patent: 2003-222089 (2003-08-01), None

Affiliated with

Also associated with

Rating

Vane pump including rotor having eccentric gravity center does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vane pump including rotor having eccentric gravity center, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vane pump including rotor having eccentric gravity center will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3847481