Exhaust trim tab for a boat
AssigneeFineline LLC
InventorShane Stillman
Life of this patent
Estimating the term…
Abstract
A moveable exhaust trim tab for a motorized boat directs exhaust gas and cooling liquid into the water, changing the size and shape of the wake and reducing engine noise. The device comprises a trim tab base having a lip and a cap attached to the trim tab base to form a cavity between the lip and the cap into which the boat's exhaust is directed. The cavity has various apertures that permit the exhaust to exit the cavity and, in some embodiments, permit water to enter the cavity from below. The device may comprise baffles, outlets, inlets, and directional collars to change the flow of the exhaust. The trim tab is attached to the boat with an actuator that lets the trim tab to be adjusted at an angle relative to the boat.
Claims14
An exhaust trim tab for a boat having a motor, the exhaust trim tab comprising:
- a. a trim tab base having a lip;
- b. a cap attached to the trim tab base to form a cavity between the cap and the lip;
- c. an exhaust pipe connector for transmitting exhaust from the motor to the cavity;
- and
- d. one or more exhaust apertures in the trim tab base.
An exhaust trim tab system for a boat having a motor, the system comprising:
- a. a trim tab base having a lip and two upturned edges at opposite ends of the trim tab base;
- b. a cap attached to the trim tab base above the lip to form a cavity, wherein:
- i. the cap has a top surface;
- ii. the cap has a cap edge extending at about a right angle from the cap's top surface toward the trim tab base;
- and
- iii. the cap is disposed above the trim tab base to form a gap between the cap edge and the trim tab base;
- c. a plurality of edge apertures in the cap edge;
- d. an exhaust pipe connector in fluid communication with the cavity;
- and
- e. one or more trim tab base apertures in the trim tab base wherein at least one trim tab aperture is angled toward the rear of the boat.
An exhaust trim tab system for a boat having a motor, the system comprising:
- a. a trim tab base having a lip and two upturned edges at opposite ends of the trim tab base;
- b. a cap having the same size and shape as the lip attached to the trim tab base above the lip to form a cavity, wherein:
- i. the cap has a cap edge extending downward toward the trim tab base;
- and
- ii. the cap is disposed above the trim tab base to form a gap between the cap edge and the trim tab base;
- c. a plurality of edge apertures in the cap edge;
- d. an exhaust pipe connector for transmitting exhaust from the motor to the cavity;
- e. three trim tab base apertures in the trim tab base wherein:
- i. a first trim tab base aperture has a collar angled toward the rear of the boat;
- and
- ii. a second trim tab base aperture and a third trim tab base aperture each has a collar angled toward the bow of the boat;
- f. an actuator attached to the trim tab base;
- and
- g. a hinge connected to the trim tab base, wherein the actuator and the hinge cooperate to enable the trim tab base to be adjusted angularly relative to the boat.
Dependencies are inferred from the claim text.