STERN DRIVES HAVING BREAKAWAY LOWER GEARCASE

STERN DRIVES HAVING BREAKAWAY LOWER GEARCASE

A stem drive (10) is for propelling a marine vessel (31) in water. The stern drive (10) has an upper drive unit (30) with a lower mounting surface (42); a lower gearcase (32) coupled to the lower mounting surface (42) and a trailing end surface (118) that is angled relative to the lower mounting sur...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: WALDVOGEL, David J, MOORE, Kevin M, COLLINS, Stephen R, SCHERER III, John O, POIRIER, Randall J, JASZEWSKI, Wayne M
Format: Patent
Sprache:eng
Schlagworte:
MARINE PROPULSION OR STEERING
PERFORMING OPERATIONS
RELATED EQUIPMENT
SHIPS OR OTHER WATERBORNE VESSELS
TRANSPORTING
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Beschreibung
Zusammenfassung:A stem drive (10) is for propelling a marine vessel (31) in water. The stern drive (10) has an upper drive unit (30) with a lower mounting surface (42); a lower gearcase (32) coupled to the lower mounting surface (42) and a trailing end surface (118) that is angled relative to the lower mounting surface (42); and a propeller shaft (62) extending forwardly from the lower gearcase (32) and being configured to rotate a propeller for pulling the marine vessel (31) in the water. The upper drive unit (30) and the lower gearcase (32) are configured such that when a forward side of the lower gearcase (32) impacts an underwater obstruction (108), the lower gearcase (32) is caused to pivot relative to the upper drive unit (30) until the trailing end surface (118) impacts the lower mounting surface (42), which thereby causes the lower gearcase (32) to completely uncouple from the upper drive unit (30).