IP Library › Granted Patent US 12703468
Granted Patent B2
US 12703468 · App. 18/336,563 · Granted Aug 11, 2026

Beaching propeller

Inventors: Michael Woodruff (Titusville, FL); David Woodruff (Titusville, FL); Christopher Woodruff (Titusville, FL)
Assignee: RAIDER OUTBOARDS, INC.
B63H1/20B63H1/15B63H1/26B63H21/32
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Quick Facts
Patent No.
US 12703468
App. No.
18/336,563
Granted
Aug 11, 2026
Kind
B2
Abstract

A propeller including a propeller hub, two or more blades connected with the propeller hub, and an insert having a tubular shape with an inner and outer face. The insert having a raised ridge on the inner face and the insert being inserted in at least a portion of the propeller hub.

Claims (28)

1 . A propeller comprising:

a propeller hub;

two or more blades connected with the propeller hub; and

an insert having a tubular shape with an inner and outer face, the insert having a raised ridge on the inner face, the insert being inserted in at least a portion of the propeller hub, the insert being secured in the propeller hub using an adhesive.

2 . The propeller of claim 1 , wherein the raised ridge is more than one raised ridge.

3 . The propeller of claim 2 , wherein the raised ridge is five raised ridges.

4 . The propeller of claim 1 , wherein the raised ridge extends at an angle to an edge of an opening of the insert.

5 . The propeller of claim 1 , wherein sequential raised ridges are arranged in a non-overlapping manner around the inner face.

6 . The propeller of claim 1 , wherein each blade of the two or more blades comprises graphene or a graphene composite.

7 . The propeller of claim 1 , wherein each blade of the two or more blades comprises pristine graphene.

8 . The propeller of claim 1 , wherein the propeller has a color corresponding to one or more parameters of the propeller.

9 . The propeller of claim 8 , wherein the one or more parameters includes pitch of the two or more blades, thickness of a leading edge of the two or more blades, thickness of a trailing edge of the two or more blades.

10 . The propeller of claim 1 , wherein the raised ridge extends helically on the inner face.

11 . An insert for a propeller, the insert having a tubular shape and comprising:

a raised ridge on an inner face of the insert, and

wherein the raised ridge is five raised ridges.

12 . The insert of claim 11 , wherein the raised ridge helically extends on the inner face.

13 . The insert of claim 11 , wherein the raised ridge is more than one raised ridge.

14 . The insert of claim 11 , wherein the raised ridge extends at an angle to an edge of an opening of the insert.

15 . The insert of claim 11 , wherein sequential raised ridges are arranged in a sequential, non-overlapping manner around the inner face.

16 . The insert of claim 11 , wherein the insert comprises graphene or a graphene composite.

17 . The insert of claim 11 , wherein the insert comprises pristine graphene.

18 . A propeller comprising:

a propeller hub;

three blades connected with the propeller hub; and

an insert in at least a portion of the propeller hub,

wherein the insert has a tubular shape having inner and outer faces, the insert having five helical raised ridges on the inner face.

19 . The propeller of claim 18 , wherein the insert is secured in the propeller hub using an adhesive.