Inventor
KOEPSEL ROGER E
US21 patents
Patents
21 patentsUS7637722B1Dec 29, 2009
Marine propeller
BRUNSWICK CORP36 citations92
US6340290B1Jan 22, 2002
Controllable pitch propeller with a fail safe increased pitch movement
BRUNSWICK CORP22 citations92
US5791950AAug 11, 1998
Twin propeller marine propulsion unit
BRUNSWICK CORP19 citations92
US5290147AMar 1, 1994
Variable pitch marine propeller with shift biasing and synchronizing mechanism
BRUNSWICK CORP21 citations92
US5236310AAug 17, 1993
Marine propeller with performance pitch, including five blade version
BRUNSWICK CORP23 citations92
US4897061AJan 30, 1990
Gearcase exhaust vent for a marine propulsion system
BRUNSWICK CORP33 citations92
US7086836B1Aug 8, 2006
Dual rate torque transmitting device for a marine propeller
BRUNSWICK CORP30 citations90
US9745948B1Aug 29, 2017
Marine propeller and method of design thereof
BRUNSWICK CORP15 citations84
US5902160AMay 11, 1999
Twin propeller marine propulsion unit
BRUNSWICK CORP14 citations81
US5104292AApr 14, 1992
Marine propeller with performance pitch, including five blade version
BRUNSWICK CORP21 citations81
US4331429AMay 25, 1982
Symmetrical propeller
BRUNSWICK CORP22 citations77
US6068529AMay 30, 2000
Marine propulsion unit with dual water inlet structure
BRUNSWICK CORP7 citations73
US5219272AJun 15, 1993
Variable pitch marine propeller with hydrodynamic shifting
BRUNSWICK CORP14 citations73
US11713102B1Aug 1, 2023
Marine drives and methods of making marine drives so as to minimize deleterious effects of cavitation
BRUNSWICK CORP1 citations71
US11459074B1Oct 4, 2022
Marine drives and methods of making marine drives so as to minimize deleterious effects of cavitation
BRUNSWICK CORP3 citations71
USD319210SAug 20, 1991
Five blade marine propeller
BRUNSWICK CORP15 citations67
US12391353B1Aug 19, 2025
Marine drives and methods of making marine drives so as to minimize deleterious effects of cavitation
BRUNSWICK CORP0 citations60
US11981411B1May 14, 2024
Marine drives and methods of making marine drives so as to minimize deleterious effects of cavitation
BRUNSWICK CORP0 citations60
US4993151AFeb 19, 1991
Method of making an easily removed marine propeller
BRUNSWICK CORP5 citations60
US4925369AMay 15, 1990
Easily removed marine propeller
BRUNSWICK CORP6 citations60
US4789303ADec 6, 1988
Marine propeller carry handle and emergency spare kit
BRUNSWICK CORP4 citations56