IP Library › Granted Patent US 7,434,531
Granted Patent B1
US 7,434,531 · App. 11/799,866 · Granted Oct 14, 2008

Device for adjusting boat wake

Assignee: Pivotal Designs Inc.
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Quick Facts
Patent No.
US 7,434,531
App. No.
11/799,866
Granted
Oct 14, 2008
Kind
B1
Abstract

A boat with a controllable wake, including a boat hull with a propulsion system. A wake controlling device includes first and second plates with a bottom surface which is convexly curved between their forward and rear ends, and first and second mounts secured to the port and starboard sides, respectively, of the boat transom and securing the forward ends of the plates for pivoting about axes which are behind the boat transom and generally lie parallel to the plane of the aft boat bottom adjacent the first and second mounts. Plate controls extend between the transom and the plates to adjustably pivot the plates relative to the mounts. A plurality of generally triangular fins extend from the plates at substantially right angles to the plate bottom surfaces and extend at substantially right angles from the axes. Side plates are on the lateral edges of the first and second plates.

Claims (25)

1. A boat with a selectively controllable wake when propelled through water, comprising:

a boat hull having a longitudinal center line between port and starboard sides, a transom at the aft end, and a hull bottom extending substantially continuously to the transom;

a propulsion system for propelling the boat hull over a body of water; and

a device for controllably adjusting the wake of a boat for skiers and wake boarders pulled by the boat, including

a first plate and a second plate, each plate having a forward end and a rear end with a bottom surface which is convexly curved between said forward and rear ends,

a first mount secured to the port side of the boat transom and securing the forward end of the first plate for pivoting about a first axis which is behind the boat transom and generally lies parallel to the plane of the aft boat bottom adjacent the first mount,

a second mount secured to the starboard side of the boat transom and securing the forward end of the second plate for pivoting about a second axis which is behind the boat transom and generally lies parallel to the plane of the aft boat bottom adjacent the second mount, and

first and second plate controls between the boat transom and the first and second plates, respectively, said plate controls being selectively adjustable to adjustably pivot the first and second plates relative to the first and second mounts, respectively;

wherein

said first and second mounts each comprise an angled plate including a mounting portion securable to the boat transom and a base plate having a bottom surface substantially aligned with the bottom hull surface at the aft end of the boat, wherein said pivot axes are defined on the respective base plates spaced aft from the mounting portion,

said transom is curved, and said angled plate mounting portion is curved to substantially match the curve of the transom, and

said hull bottom and transom intersect at a first angle, said mounting portion and said base plate of each angled plate intersect at a second angle, and said first and second angles are supplementary.

2. A boat with a selectively controllable wake when propelled through water, comprising:

a boat hull having a longitudinal center line between port and starboard sides, a transom at the aft end, and a hull bottom extending substantially continuously to the transom;

a propulsion system for propelling the boat hull over a body of water; and

a device for controllably adjusting the wake of a boat for skiers and wake boarders pulled by the boat, including

a first plate and a second plate, each plate having a forward end and a rear end with a bottom surface which is convexly curved between said forward and rear ends,

a first mount secured to the port side of the boat transom and securing the forward end of the first plate for pivoting about a first axis which is behind the boat transom and generally lies parallel to the plane of the aft boat bottom adjacent the first mount, and a second mount secured to the starboard side of the boat transom and securing the forward end of the second plate for pivoting about a second axis which is behind the boat transom and generally lies parallel to the plane of the aft boat bottom adjacent the second mount, wherein said first and second mounts each comprise an angled plate including a mounting portion securable to the boat transom and a base plate having a bottom surface substantially aligned with the bottom hull surface at the aft end of the boat, wherein said pivot axes are defined on the respective base plates spaced aft from the mounting portion

first and second plate controls between the boat transom and the first and second plates, respectively, said plate controls being selectively adjustable to adjustably pivot the first and second plates relative to the first and second mounts, respectively,

a plurality of generally-triangular fins extending from said first and second plates at substantially right angles to the plate bottom surfaces and extending at substantially right angles from said first and second axes,

side plates on the lateral edges of the first and second plates, and wherein the forward end of the bottom surfaces of the first and second plates in a first position are substantially aligned with the bottom surfaces of the base plates of the first and second mounts, respectively, and

said plate controls are selectively adjustable to pivot said first and second plates down from said first position to increase the wake of the boat;

wherein

said transom is curved, and said angled plate mounting portion is curved to substantially match the curve of the transom, and

said hull bottom and transom intersect at a first angle, said mounting portion and said base plate of each angled plate intersect at a second angle, and said first and second angles are supplementary.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 11, 2015
From: EARL, THOMAS C., JR.; ZSIDO, JOSEPH W.
To: CUSTOM STAINLESS & ALUMINUM PRODUCTS INC.
Reel/Frame 037267/0222 →
CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE NAME PREVIOUSLY RECORDED ON REEL 037227 FRAME 0521. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Dec 9, 2015
From: PIVOTAL DESIGNS INC.
To: EARL, THOMAS C, JR.; ZSIDO, JOSEPH W.
Reel/Frame 037254/0762 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 7, 2015
From: PIVOTAL DESIGNS INC.
To: EARL, THOMAS C., JR.; ZSIDO, J W.
Reel/Frame 037227/0521 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 26, 2007
From: ZSIDO, JOSEPH; EARL, THOMAS C. JR.
To: PIVOTAL DESIGNS INC
Reel/Frame 019891/0359 →