(19)
(11) EP 4 551 798 A1

(12)

(43) Date of publication:
14.05.2025 Bulletin 2025/20

(21) Application number: 23828539.9

(22) Date of filing: 23.06.2023
(51) International Patent Classification (IPC): 
F01C 1/22(2006.01)
F01C 21/00(2006.01)
(52) Cooperative Patent Classification (CPC):
F01C 1/22; F01C 21/008
(86) International application number:
PCT/US2023/068948
(87) International publication number:
WO 2024/044415 (29.02.2024 Gazette 2024/09)
(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(30) Priority: 25.08.2022 US 202263400797 P

(71) Applicant: LiquidPiston, Inc.
Bloomfield CT 06002 (US)

(72) Inventors:
  • SHKOLNIK, Alexander
    WILMINGTON, Massachusetts 01887 (US)
  • SHKOLNIK, Nikolay
    HARTFORD, Connecticut 06117 (US)
  • KOPACHE, Alexander
    HARTFORD, Connecticut 06107 (US)
  • NICKERSON, Mark
    FALMOUTH, Maine 04105 (US)
  • AHMED, Saad
    HARTFORD, Connecticut 06117 (US)
  • BECKER, Kyle
    ARLINGTON, Massachusetts 02474 (US)
  • SPITULNIK, Adam
    HARTFORD, Connecticut 06103 (US)
  • MIKHAILOV, Konstantin
    PASADENA, Maryland 21122 (US)

(74) Representative: Prüfer & Partner mbB Patentanwälte · Rechtsanwälte 
Sohnckestraße 12
81479 München
81479 München (DE)

   


(54) ROTARY ENGINE WITH AXIALLY SYMMETRIC RING GEARS