| (19) |
 |
|
(11) |
EP 0 200 510 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
30.12.1986 Bulletin 1986/52 |
| (43) |
Date of publication A2: |
|
05.11.1986 Bulletin 1986/45 |
| (22) |
Date of filing: 28.04.1986 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH DE FR GB IT LI LU NL SE |
| (30) |
Priority: |
01.05.1985 GB 8511097
|
| (71) |
Applicant: FGL PROJECTS LIMITED |
|
() |
|
| (72) |
Inventor: |
|
- Gannon, Raymond c/o FGL Projects Limited
()
|
|
| |
|
| (54) |
Improvements in or relating to pumps |
(57) A pump comprising a deformable tube which passes through an external casing divided
into air-tight chambers each connected to a source of increased and reduced pressure.
The tube contains a valve means so that when different parts of the tube are subjected
to a predetermined sequence of variations in pressure by varying the pressure in the
chambers fluid within the tube is urged from its inlet to its outlet.