(19)
(11) EP 2 249 040 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.07.2013 Bulletin 2013/28

(43) Date of publication A2:
10.11.2010 Bulletin 2010/45

(21) Application number: 10160464.3

(22) Date of filing: 20.04.2010
(51) International Patent Classification (IPC): 
F04C 18/344(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated Extension States:
AL BA ME RS

(30) Priority: 01.05.2009 GB 0907606

(71) Applicant: Wabco Automotive UK Limited
Leeds LS27 0HQ (GB)

(72) Inventors:
  • Heaps, David
    Leeds, LS27 0HQ (GB)
  • Wellings, Paul
    Leeds, LS27 0HQ (GB)

(74) Representative: Gray, James et al
Withers & Rogers LLP 4 More London Riverside
London SE1 2AU
London SE1 2AU (GB)

   


(54) Improved monovane vacuum pump


(57) A vacuum pump (10) for use in automotive applications having a casing (12) defining a chamber (14), a rotor (26) rotatably mounted within the chamber (14) and a vane (40) slidably mounted in a slot (32) on the rotor (26). The vane (40) is formed from a single piece of material having a planar centre portion (42) and curved ends (44) where the curved ends (44) are turned towards one another. Each curved end (44) has a contact portion which contacts the chamber wall (18), the contact portion being intermediate the centre portion (42) and the tip of said single piece of material distal to the centre portion (42).







Search report









Search report