(19)
(11) EP 3 158 194 A1

(12)

(43) Date of publication:
26.04.2017 Bulletin 2017/17

(21) Application number: 15796299.4

(22) Date of filing: 05.05.2015
(51) International Patent Classification (IPC): 
F04B 43/02(2006.01)
(86) International application number:
PCT/US2015/029151
(87) International publication number:
WO 2015/179121 (26.11.2015 Gazette 2015/47)
(84) Designated Contracting States:
AL 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 RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
MA

(30) Priority: 20.05.2014 US 201462000638 P

(71) Applicants:
  • Chen, Chung-chin
    Alexandria, Virginia 22314 (US)
  • Cai, Ying Lin
    Foshan City, Guangdong 528303 (CN)
  • Hsu, Chao Fou
    Sanmin Chiu Kaohsiung 807 (TW)

(72) Inventors:
  • CAI, Ying, Lin
    528303 Guangdong (CN)
  • HSU, Chao, Fou
    807 Kaohsiung City (TW)

(74) Representative: Zeuner Summerer Stütz 
Nußbaumstrasse 8
80336 München
80336 München (DE)

   


(54) ROUNDEL STRUCTURE FOR FOUR-COMPRESSION-CHAMBER DIAPHRAGM PUMP WITH MULTIPLE EFFECTS