Marine dual propeller lower bore drive assembly

US5366398A · kind A · utility

Assignee

• Brunswick Corporation · US

Inventors

• Gary L. Meisenburg · Stillwater, US
• Edward C. Eick · Stillwater, US
• Phillip D. Magee · Stillwater, US
• Charles M. Mixon · Stillwater, US
• Robert B. Weronke · Oshkosh, US
• Waylon D. Shields · Stillwater, US
• Woody Smith · Stillwater, US
• Steven J. Pavey · Carney, US

Key dates

• Filing date: May 28, 1993
• Grant date: Nov 22, 1994
• Expiry date: May 28, 2013

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B63H2023/327
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A marine drive (10, 310) has two counter-rotating propellers (12 and 14, 312 and 314). Inner and outer concentric counter-rotating propeller shafts (40 and 42, 340 and 338) are supported by a spool (38, 336) in the lower horizontal bore (28, 328). Passages are provided in the housing for communicating lubrication and/or exhaust with the horizontal bore. Locking structure (50, 404) holds the driven gears and bearings in place in the lower horizontal bore.