US 12,459,624 B1
Marine drives having an electric motor assembly and methods for making the same
William W. McEathron, Fond du Lac, WI (US); and Vinodh Kumar Balakrishnan, Fond du Lac, WI (US)
Assigned to Brunswick Corporation, Mettawa, IL (US)
Filed by Brunswick Corporation, Mettawa, IL (US)
Filed on Apr. 20, 2023, as Appl. No. 18/303,897.
Int. Cl. B63H 21/17 (2006.01); B63H 21/36 (2006.01); F04D 13/08 (2006.01); H02K 5/10 (2006.01); H02K 9/00 (2006.01)
CPC B63H 21/17 (2013.01) [B63H 21/36 (2013.01); F04D 13/086 (2013.01); H02K 5/10 (2013.01); H02K 9/00 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A marine drive comprising:
a torpedo housing that axially extends between a closed end and an open end, an internal cavity being defined between the closed end and the open end;
an electric motor configured to power a propulsor for propelling the marine drive in a body of water, the electric motor having a motor housing with a first portion located inside the internal cavity and a second portion located outside the internal cavity so that the second portion is directly exposed to the body of water, wherein the torpedo housing defines an opening that directly exposes a portion of the first portion of the motor housing that is aligned with the opening to the body of water, and further comprising a groove in a radially outermost surface of the motor housing that facilitates flow of the water through the opening and between the torpedo housing and the motor housing.