# US 9,038,555 B2 · Adjustable skeg > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,038,555 B2 - Document ID: US9038555B2 - Status: Granted - Kind: B2 - Application number: 13/645,220 - Filed: 2012-10-04 - Published: 2013-04-04 - Granted: 2015-05-26 - Earliest claimed: 2011-10-04 - Assignees: Marine Dynamics, Inc. - Applicants: Marine Dynamics, Inc. - Inventors: Jon C. Templeman - Web page: https://patentgrep.com/patent/US9038555B2 ## CPC - B63H 20/34: comprising stabilising fins {, foils, anticavitation plates, splash plates, or rudders (rudders carrying propellers B63H25/42; rudders carrying jets B63H25/46)} - B63H 20/12: Means enabling steering - Y10T 29/49817: with other than ancillary treating or assembling - Y10T 29/49947: by applying separate fastener - B63H: MARINE PROPULSION OR STEERING (propulsion of air-cushion vehicles B60V1/14; specially adapted for submarines, other than nuclear propulsion, B63G; specially adapted for torpedoes F42B19/00) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract An adjustable skeg has a body formed by sidewalls including a closed bottom or base. The sidewalls converge to form a leading edge and a trailing end. The top is generally open and the top and sidewalls define a cavity for receiving a skeg or stub. The skeg may also be of unitary construction with the lower drive unit/gear case of a boat motor. The top and bottom portions of the trailing end project rearwardly to form extensions beyond a central portion of the trailing end. A torque vane is pivotally mounted between the top and bottom extensions. The vane is pivotable to subtend a preselected angle with a respective sidewall for eliminating steering torque. A plurality of receivers is positioned on either the top or bottom extension for locking the vane in place following adjustment. The receivers are identified by respective indicia for calibrating adjustment of the torque vane. ## Claims ### Claim 1 A skeg for attachment to the lower drive unit of a boat motor, comprising: a. a pair of spaced apart sidewalls; b. the sidewalls are connected to form a body having a leading edge, and a trailing end; c. the body further includes upper and lower extension portions that extend rearwardly beyond the trailing end; d. the body has an open top and closed bottom; e. a vane is pivotally connected to the trailing end; and f. a repositionable fastener on the lower extension to enable pivotal adjustment of the vane. ### Claim 2 (depends on 1) The skeg of claim 1, wherein the trailing end includes a plurality of spaced apart recesses for receiving the fastener. ### Claim 3 (depends on 2) The skeg of claim 2, wherein the trailing end includes a plurality of indicia identifying the recesses for receiving the fastener. ### Claim 4 (depends on 1) The skeg of claim 1, wherein a portion of the trailing end forms a bottom extension having a convex upper surface. ### Claim 5 (depends on 1) The skeg of claim 1, wherein a dependent fin portion is connected to the bottom. ### Claim 6 (depends on 1) The skeg of claim 1, wherein the body includes a plurality of apertures in spaced relation to the open top for fastening the skeg to the lower drive unit. ### Claim 7 A skeg that is attachable to the lower drive unit of a boat motor, comprising: a. a body having a pair of sidewalls connected at a leading edge, a bottom and a trailing end; b. the body includes upper and lower extension portions that extend rearwardly beyond the trailing end; c. a vane is pivotally connected between the upper and lower extensions; d. a fastener connects the lower extension with the vane; and e. the fastener is repositionable on the lower extension to enable pivotal adjustment of the vane. ### Claim 8 (depends on 7) The skeg of claim 7, wherein the lower extension includes a plurality of spaced recesses for receiving the fastener. ### Claim 9 (depends on 8) The skeg of claim 8, wherein the lower extension includes a plurality of indicia identifying the recesses for receiving the fastener. ### Claim 10 (depends on 7) The skeg of claim 7, wherein the fastener connects the vane to the top extension and is repositionable on the top extension to enable pivotal adjustment of the vane. ### Claim 11 (depends on 8) The skeg of claim 8, wherein the lower extension includes a convex upper surface. ### Claim 12 (depends on 8) The skeg of claim 8 wherein the lower extension includes a dependent fin portion. ### Claim 13 A boat motor comprising: a. an engine; b. a lower drive unit attached to the engine, the lower drive unit including a propeller and a skeg; c. the skeg comprising a sidewall forming a body, wherein the body includes a leading edge, a trailing end and a closed bottom, the body further includes upper and lower extension portions that extend rearwardly beyond the trailing end; d. a repositionable vane is pivotally connected to the body; and e. a fastener on the lower extension connects the repositionable vane to the trailing end. ### Claim 14 (depends on 13) The boat motor of claim 13, wherein the trailing end includes a bottom portion having: a. a plurality of spaced recesses for receiving the fastener; and b. a plurality of indicia identifying the recesses for receiving the fastener. ### Claim 15 (depends on 13) The boat motor of claim 13, wherein the bottom includes a convex upper surface and a dependent fin portion. ### Claim 16 A method of using an adjustable skeg attached to the lower drive unit of a boat motor, the skeg including a body having a pair of sidewalls connected at a leading edge, a bottom edge and a trailing end, the body having upper and lower extension portions that extend rearwardly beyond the trailing end, a vane pivotally connected between the upper and lower extension portions, and a fastener for connecting the vane to the lower portion, the method comprising: a. unfastening the vane from the lower extension portion; b. pivotally rotating the vane between the upper and lower extension portions from a selected angular orientation to a second selected angular orientation; and c. fastening the vane to the lower extension portion at the second selected angular orientation.