US 12,275,511 B2
Marine drive having vented lower unit
David J. Waldvogel, Fond du Lac, WI (US); Kass W. Sawyer, Neenah, WI (US); Laura K. Mueller, Fond du Lac, WI (US); Douglas A. Hull, Campbellsport, WI (US); and Aaron J. Novak, North Fond du Lac, WI (US)
Assigned to Brunswick Corporation, Mettawa, IL (US)
Filed by Brunswick Corporation, Mettawa, IL (US)
Filed on Feb. 14, 2022, as Appl. No. 17/671,041.
Prior Publication US 2023/0257095 A1, Aug. 17, 2023
Int. Cl. B63H 20/32 (2006.01); B63H 20/06 (2006.01); B63H 21/17 (2006.01); H02K 5/10 (2006.01); H02K 5/20 (2006.01); B63H 20/02 (2006.01)
CPC B63H 20/32 (2013.01) [B63H 20/06 (2013.01); B63H 21/17 (2013.01); H02K 5/10 (2013.01); H02K 5/207 (2021.01); B63H 2020/025 (2013.01); H02K 2209/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A marine drive for propelling a marine vessel in a body of water, the marine drive comprising:
a motor housing,
a motor in the motor housing, the motor being configured to cause a propulsor of the marine drive to create a thrust force in the body of water,
a vent conduit that vents the motor housing to atmosphere, and
a hydrophobic plug configured to permit venting of air and moisture from the motor housing via the vent conduit and configured to prevent ingress of moisture to the motor housing via the vent conduit.