초록 ▼

Disclosed is a construction applicable to stern drive and outboard types of power boat propulsion units for enhancing the performance normally provided by the customary trim/tilt capabilities designed into the units. At a critical juncture in the trim/tilt operation, the present device automatically

Disclosed is a construction applicable to stern drive and outboard types of power boat propulsion units for enhancing the performance normally provided by the customary trim/tilt capabilities designed into the units. At a critical juncture in the trim/tilt operation, the present device automatically “kicks in”and by intercepting only a predetermined portion of the propeller backwash provides an almost immediate stern up/bow down result without noticeable speed retardation. The device lends itself either to kit form or to factory installation.

대표청구항 ▼

In a power boat propulsion unit pivotally mounted on a transom bracket for rotation about a substantially vertical axis for steering and a substantially horizontal axis for trimming and tilting, the unit including a propeller and an anticavitation plate, a trim augmentation device comprising: a. a m

In a power boat propulsion unit pivotally mounted on a transom bracket for rotation about a substantially vertical axis for steering and a substantially horizontal axis for trimming and tilting, the unit including a propeller and an anticavitation plate, a trim augmentation device comprising: a. a mounting plate attached to the anticavitation plate, said mounting plate extending from a front end to a rear end; b. a deflector plate extending from a forward end to an after end; c. hinge means for connecting said forward end of said deflector plate to said rear end of said mounting plate for movement between a base position in which said deflector plate is substantially coplanar with said mounting plate and a deployed position in which said deflector plate is angularly inclined to intercept a predetermined portion only of the propeller backwash in forward operating mode of the propulsion unit; and, d. means for urging said deflector plate toward said deployed position in dependence upon the extent of trim rotation of the unit about the horizontal axis.