Title:
PUMP APPARATUS
Document Type and Number:
WIPO Patent Application WO/2019/158935
Kind Code:
A3
Abstract:
A pump apparatus comprising a pump chamber having a fluid inlet and a fluid outlet; and a flexible impeller mounted for rotation within the pump chamber, wherein the pump chamber is defined by a curved wall, the wall including a first wall portion having a first radius and a second wall portion having a second radius, wherein the second radius is greater than the first radius; the flexible impeller includes a plurality of radially extending vanes, wherein the vanes contact the curved wall of the pump chamber such that separate pump cavities are defined between adjacent vanes and the pump chamber wall; the flexible impeller is driven to rotate by a drive shaft; the drive shaft passes through a first end wall which closes one side of the pump chamber and a distal end of the drive shaft rotates within a bearing defined by a second end wall which closes the opposite side of the pump chamber; and wherein the fluid inlet and the fluid outlet are defined in the second end wall.
Inventors:
WEATHERLEY RICHARD (GB)
Application Number:
PCT/GB2019/050413
Publication Date:
October 03, 2019
Filing Date:
February 15, 2019
Export Citation:
Assignee:
TCS MICROPUMPS LTD (GB)
International Classes:
F04C5/00
Foreign References:
| EP2639456A1 | 2013-09-18 | |||
| JPH06288357A | 1994-10-11 |
Attorney, Agent or Firm:
BRIDLE INTELLECTUAL PROPERTY LIMITED (GB)
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