US 12,067,814 B1
Marine motor assembly and method for testing a water resistance of a motor unit housing of a marine motor assembly
Mark J Skrzypchak, Pleasant Prairie, WI (US); Nathan Blank, Burlington, WI (US); and Kenneth Chung, Lindenhurst, IL (US)
Assigned to BRP US Inc., Sturtevant, WI (US)
Filed by BRP US INC., Sturtevant, WI (US)
Filed on Jan. 24, 2022, as Appl. No. 17/582,509.
Claims priority of provisional application 63/143,651, filed on Jan. 29, 2021.
Int. Cl. G07C 5/08 (2006.01); B63B 79/10 (2020.01); B63H 20/02 (2006.01); B63H 20/10 (2006.01); B63H 20/24 (2006.01); B63H 20/32 (2006.01); F02M 35/10 (2006.01)
CPC G07C 5/0808 (2013.01) [B63B 79/10 (2020.01); B63H 20/02 (2013.01); B63H 20/10 (2013.01); B63H 20/24 (2013.01); B63H 20/32 (2013.01); F02M 35/1015 (2013.01); G07C 5/0816 (2013.01); G07C 5/0841 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A marine motor assembly for mounting to a watercraft, the marine motor assembly comprising:
a motor unit including:
a motor unit housing,
a motor disposed inside the motor unit housing,
a propulsion device operatively connected to the motor,
an air pump fluidly communicating with an under-housing volume of the motor unit housing,
a pressure sensor fluidly communicating with the under-housing volume for measuring air pressure in the under-housing volume of the motor unit housing; and
a control unit communicating with the air pump and the pressure sensor, the control unit being programmed for:
controlling the air pump for changing air pressure in the under-housing volume of the motor unit housing;
monitoring change in the air pressure for a predetermined amount of time; and
following the predetermined amount of time:
in response to determining that the change in air pressure is within a predetermined range, confirming that the motor unit housing is water-resistant, and
in response to determining that the change in air pressure is outside the predetermined range, indicating that the water resistance of the motor unit housing is compromised.