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US 5,688,152 AGranted
Marine drive unit with the primary shaft bearing mounted in the engine flywheel cover
AssigneeAB Volvo Penta
InventorChristian Rodskier
Life of this patent
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AssigneeAB Volvo Penta
InventorChristian Rodskier
Estimating the term…
A marine drive unit in combination with a coupling (6) between the engine (4) and the propeller drive unit (2). The unit has a divided flywheel cover (20), the proximal portion (22) of which is joined to the engine and has an axially extending section (25) with a connecting portion (38), which has, as seen in the drawing, an inner profile which is upwardly tapered both longitudinally and transversely to the drive unit. A primary shaft (16) is joined via drive knuckles (15) to the propeller drive unit (2) and is borne in a bearing (28) mounted in a seat (27) in a first end of a bearing holder (26). The primary shaft (16) engages a flywheel (19). The other end of the bearing holder (26) is joined to the distal portion (24) of the flywheel cover. The distal portion (24) has a supporting portion (31) with an exterior profile complementary to the interior profile of the connecting portion (38). The proximal portion (22) of the flywheel cover can be anchored to its distal portion (24) via a screw (42) and the bearing holder (26) has a rubber element (32) welded to its outside, the rubber element being mounted in abutment with a shoulder (36) in a passage (12) in a bushing elements (10) fixed in the boat transom (9).
In a marine drive unit with engine mounting in combination with a coupling between an engine and a propeller drive, said unit comprising a bearing holder joined to a flywheel cover, said bearing holder having a seat for a bearing for a shaft extending from the engine, said shaft being a primary shaft in the drive unit, and a resilient element which is disposed between the bearing holder and a bushing means arranged on a boat transom and partially penetrating said boat transom, the improvement wherein the flywheel cover is divided and has a proximal portion joined to the engine and having a connecting portion, and a distal portion joined to the bearing holder and having a supporting portion, shaped to complement the connecting portion, and the engine, when the connecting portion is in precise contact with the supporting portion, is correctly aligned in relation to the bearing mounted in the bearing holder seat.
Dependencies are inferred from the claim text.