(19)
(11) EP 4 816 694 A1

(12)

(43) Date of publication:
07.10.2026 Bulletin 2026/41

(21) Application number: 24895263.2

(22) Date of filing: 27.11.2024
(51) International Patent Classification (IPC): 
F04B 43/02(2006.01)
F04B 53/00(2006.01)
F04B 43/00(2006.01)
 F04B 45/04(2006.01)
F16J 3/02(2006.01)
(52) Cooperative Patent Classification (CPC):
F04B 43/026; F04B 43/02; F04B 43/04; F04B 43/0054; F04B 45/04
(86) International application number:
PCT/CA2024/051578
(87) International publication number:
WO 2025/111703 (05.06.2025 Gazette 2025/23)
(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:
GE KH MA MD TN

(30) Priority: 30.11.2023 US 202318525491

(71) Applicant: Leggett & Platt Canada Co.
Halifax, Nova Scotia B3J 2X2 (CA)

(72) Inventors:
  • BLENDEA, Horia
    LaSalle, Ontario N9J 3P7 (CA)
  • TINDALL, Paul
    Harrow, Ontario N0R 1G0 (CA)

(74) Representative: Kraus & Lederer PartGmbB 
Thomas-Wimmer-Ring 15
80539 München
80539 München (DE)

   


(54) PUMP DIAPHRAGM WITH IMPROVED SEAL GEOMETRY