Invention Grant
- Patent Title: Progressive cavity pump including inner and outer rotors and a wheel gear maintaining an interrelated speed ratio
- Patent Title (中): 进气腔泵包括内外转子和保持相互关联速比的齿轮
-
Application No.: US13059427Application Date: 2009-08-07
-
Publication No.: US08496456B2Publication Date: 2013-07-30
- Inventor: Sigurd Ree
- Applicant: Sigurd Ree
- Applicant Address: NO Straume
- Assignee: AGR Subsea AS
- Current Assignee: AGR Subsea AS
- Current Assignee Address: NO Straume
- Agency: Foley & Lardner LLP
- Priority: NO20083617 20080821
- International Application: PCT/NO2009/000276 WO 20090807
- International Announcement: WO2010/021550 WO 20100225
- Main IPC: F01C1/10
- IPC: F01C1/10 ; F03C2/00 ; F03C4/00 ; F04C2/00
Abstract:
A progressive cavity pump includes at least one inner rotor with Z external threads and at least one outer rotor with Z+1 internal threads. The outer rotor has radial bearings at both ends, whereas the inner rotor has a radial bearing only on one side, preferably the inlet side. There is arranged, on the same side as the bearing of the inner rotor, a conventional gear, for example a wheel gear, for maintaining a stable ratio between the rotational speeds of the inner and outer rotors exactly equal to (Z+1)/Z.
Public/Granted literature
- US20110150687A1 PROGRESSIVE CAVITY PUMP WITH INNER AND OUTER ROTORS Public/Granted day:2011-06-23
Information query
IPC分类:
