The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 30, 2025
Filed:
Feb. 08, 2022
Brunswick Corporation, Mettawa, IL (US);
Charles A. Lubitz, Fond du Lac, WI (US);
David M. Van Buren, Fond du Lac, WI (US);
Matthew W. Snyder, Fond du Lac, WI (US);
Brunswick Corporation, Mettawa, IL (US);
Abstract
A method for shifting a multi-speed transmission of a marine propulsion device from a first gear being engaged to a second gear being engaged by selectively filling a first clutch and a second clutch with a fluid. The method includes operating the marine propulsion device with the second gear disengaged and controlling the second clutch to perform a first prefill in which fluid is injected into the second clutch to partially fill the second clutch while the second gear remains disengaged. The method further includes receiving, after the first prefill, a request to shift from the first gear to the second gear and subsequently increasing a pressure in the second clutch to cause the second gear to engage and decreasing a pressure in the first clutch to cause the first gear to disengage to thereby shift the multi-speed transmission.