Marine dual propeller lower bore drive assembly

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 communicati...

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Hauptverfasser: SHIELDS, WAYLON D, SMITH, WOODY R, WERONKE, ROBERT B, MIXON, CHARLES M, PAVEY, STEVEN J, EICK, EDWARD C, MEISENBURG, GARY L, MAGEE, PHILLIP D
Format: Patent
Sprache:eng
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Zusammenfassung: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.