Marine propulsion system gear case assembly

US9227715B1 · kind B1 · utility

Assignee

• BRP US Inc. · US

Inventors

• Roger Raetzman · Pleasant Prairie, US
• Simon Pfiffner · Deerfield, US
• Michael Freitag · Würzburg, DE
• Mark C. Noble · Pleasant Prairie, US
• John Feuerstein · Racine, US

Key dates

• Filing date: Jan 31, 2014
• Grant date: Jan 5, 2016
• Expiry date: Jan 31, 2034

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B63H2020/323
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A gear case assembly for a marine propulsion system has a gear case having a first end adapted to connect the gear case to a remainder of the marine propulsion system, and a second end disposed opposite the first end. A driveshaft is disposed at least in part in the gear case. A propeller shaft, operatively connected to an end of the driveshaft, is disposed at an angle thereto. The end of the driveshaft and at least a portion of the propeller shaft are disposed in a transmission chamber defined in the gear case. An expansion port is defined in the gear case. A container, defining an expansion chamber, is disposed outside the gear case. The expansion port fluidly communicates the transmission chamber with the expansion chamber. An outboard engine is also disclosed.