Rotary expansible chamber devices – Unlike helical surfaces on relatively wobbling rotating...
Patent
1997-03-21
1998-09-15
Vrablik, John J.
Rotary expansible chamber devices
Unlike helical surfaces on relatively wobbling rotating...
418153, F04C 2107, F04C 500
Patent
active
058070877
ABSTRACT:
A stator assembly is provided for use in a progressing cavity pump. The assembly includes a tubular pump barrel in which are slidably positioned a plurality of cup-like spacers. Each spacer has a tubular wall, an inlet end with an internal annular flange and an outlet end defined by a circumferential edge of the tubular wall. An elastomeric stator segment is housed in each spacer. Each stator segment has adjacent an outlet end thereof a circumferential external lip portion and has a contoured cavity therethrough generally coaxial with the pump barrel and adaptable to rotatably receive a progressing cavity pump rotor therein. The lip portion of each stator segment is captured between a spacer outlet end circumferential edge and the next adjacent spacer annular flange portion so that the elastomeric stator segments are retained in serial position within the pump barrel by the spacers permitting the spacers and stator segments to be easily removed from the pump barrel for repair and replacement.
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Mono Merlin Pump Family Brochure by by Mono Pumps Limited, Nov. 1991.
Mono Merlin Monobloc Pump Range Technical Data Sheet No. 8001/005 by Mono Pumps Limited, Jul. 1986.
Brandt David Christopher
Fulbright Gene Ray Neil
Tarby, Inc.
Vrablik John J.
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