Progressing cavity pump or motor

Details Progressing cavity pump or motor Progressing cavity pump or motor

2004-05-14

2008-08-05

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Unlike helical surfaces on relatively wobbling rotating...

C418S153000, C418S178000, C415S072000, C415S073000, C366S051000, C138S138000, C138S139000, C166S236000, C417S410300, C417S310000, C277S504000, C277S530000, C277S636000

Reexamination Certificate

active

07407372

ABSTRACT:
A progressing cavity pump or a motor includes, in one embodiment, an outer tube12, an inner tube14, and a plurality of apertures16. A pair of annular seal glands18seal the stator material to the outer tube. The stator material is injection molded into the inner tube and passes through the plurality of apertures and into an annular gap between the inner tube and the outer tube. In other embodiments, the outer housing for a progressing cavity pump or motor is provided with one or more grooves, with each groove having an outer surface radius less than the outer housing surface radius. A plurality of apertures are provided in fluid communication with the grooves. According to the method of the invention, the stator material is injected into the apertures and fills a space radially outward of the apertures to bond the stator materiaal to the outer housing.

REFERENCES:
patent: 3280753 (1966-10-01), Zimmer
patent: 4755115 (1988-07-01), Akaike
patent: 5318416 (1994-06-01), Hantschk et al.
patent: 7131827 (2006-11-01), Jager
patent: 2541779 (1977-03-01), None
patent: 3119568 (1982-12-01), None
patent: 3322095 (1984-12-01), None
patent: 2081812 (1982-02-01), None
patent: 61180512 (1986-08-01), None

Affiliated with

Also associated with

Rating

Progressing cavity pump or motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4001658