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EP 4 771 249 A1

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(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 24769212.2 (22) Date of filing: 27.08.2024

(51) International Patent Classification (IPC):  E21B 7/04(2006.01) E21B 17/04(2006.01) E21B 7/06(2006.01) E21B 17/046(2006.01) (52) Cooperative Patent Classification (CPC): E21B 7/04; E21B 7/064; E21B 17/04; E21B 17/046; E21B 17/0465 (86) International application number: PCT/US2024/044035 (87) International publication number: WO 2025/049477 (06.03.2025 Gazette 2025/10)

(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: 28.08.2023 US 202363579155 P (71) Applicant: Vermeer Manufacturing Company Pella, IA 50219 (US)	(72) Inventors: LANGENFELD, Micheal David Pella, IA 50219 (US) SMITH, Jacob Richard Altoona, IA 50009 (US) (74) Representative: Forresters IP LLP  Skygarden Erika-Mann-Straße 11 80636 München 80636 München (DE)