(19)
(11) EP 0 713 009 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.02.1998 Bulletin 1998/07

(43) Date of publication A2:
22.05.1996 Bulletin 1996/21

(21) Application number: 95308267.4

(22) Date of filing: 17.11.1995
(51) International Patent Classification (IPC)6: F04B 43/02
(84) Designated Contracting States:
DE ES FR GB IT

(30) Priority: 17.11.1994 GB 9423174

(71) Applicants:
  • Clarke, Peter
    Southwell, Nottingham NG25 0TX (GB)
  • Clarke, Edit
    Southwell, Nottingham NG25 0TX (GB)
  • Clarke, Rene
    Southwell, Nottingham NG25 0TX (GB)
  • Clarke, Brendon
    Southwell, Nottingham NG25 0TX (GB)
  • Clarke, Carl
    Southwell, Nottingham NG25 0TX (GB)
  • Clarke, Cheryl
    Southwell, Nottingham NG25 0TX (GB)

(72) Inventor:
  • Clarke, Peter
    West Bridgford Nottingham NG14 5FG (GB)

(74) Representative: Gilding, Martin John 
Eric Potter & Clarkson St. Mary's Court St. Mary's Gate
Nottingham NG1 1LE
Nottingham NG1 1LE (GB)

   


(54) Diaphragm pump


(57) A diaphragm pump (10) comprising:
a chamber (12) opening at opposite end portions to provide an inlet (14 and an outlet (16), and including an aperture (30) defined in a surface of the chamber between the inlet and outlet;
a flexible diaphragm (40) having an inner region (42) and an outer region (44), the outer region (44) sealing against the surface of the chamber surrounding the aperture to close off the aperture, the chamber and the diaphragm (40) thereby defining a passageway (50) providing fluid communication between the inlet and outlet;
a one-way inlet valve (25) coupled to the inlet (14) and a one-way outlet valve (27) coupled to the outlet (16);
the inner region (42) of the diaphragm (40) being reciprocatable within the chamber (12), whereby on reciprocation of the inner region fluid is drawn in via the inlet valve and expelled via the outlet valve,
wherein the diaphragm (40) is angled such that the plane of the diaphragm faces the outlet (16).






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