(19)
(11) EP 3 891 358 A1

(12)

(43) Date of publication:
13.10.2021 Bulletin 2021/41

(21) Application number: 20833517.4

(22) Date of filing: 14.02.2020
(51) International Patent Classification (IPC): 
E21B 43/12(2006.01)
F04B 49/06(2006.01)
F04B 47/08(2006.01)
(52) Cooperative Patent Classification (CPC):
F04B 49/06; F04B 47/08; E21B 47/008
(86) International application number:
PCT/US2020/018214
(87) International publication number:
WO 2020/263349 (30.12.2020 Gazette 2020/53)
(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:
KH MA MD TN

(30) Priority: 26.06.2019 US 201962866977 P

(71) Applicant: Q.E.D. Environmental Systems, Inc.
Dexter MI 48130 (US)

(72) Inventor:
  • SCHAUPP, John F.
    Sylvania, Ohio 43560 (US)

(74) Representative: Staeger & Sperling Partnerschaftsgesellschaft mbB 
Sonnenstraße 19
80331 München
80331 München (DE)

   


(54) FLUID PUMP SYSTEM FOR GROUNDWATER WELLS WITH INTELLIGENT CYCLE COUNT AND AIR SUPPLY VALVE MONITORING