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| Number | Title | Issue Date |
| 4100874 | Flap rudder The flap rudder is provided for use on a boat hull including a generally horizontal propeller shaft having a marine propeller mounted thereon and comprises a rudder assembly supported from the hull in horizontal registry with the propeller and for oscilla... | 07/18/1978 |
| 4088091 | Fin assembly for power boats There is disclosed a fin structure for mounting in an opening in the hull of a power boat having an elongated rectangular panel connected between the base edges of a pair of elongated fins, each fin having a base edge, a leading edge and a trailing edge, ... | 05/09/1978 |
| 4074646 | Variable foil keel and sail boat A sailboat, and a variable foil appendage, ie., keel or rudder for a sailboat, the appendage having a central core portion, and movable skin portions on either side thereof, the skin portions being connected to the core portion essentially along the forwa... | 02/21/1978 |
| 4029038 | Releasable rudder lock A rudder lock for pivotally mounting a rudder on a boat and comprising a bracket attachable to the rudder, a pintle attached to the bracket, and a mounting member attachable to the boat and having an aperture sized to receive the pintle. A resilient lock ... | 06/14/1977 |
| 4024827 | Vessel rudder assembly, particularly a balance type profile rudder with a fin A vessel rudder assembly including a rudder stock bearing, a rudder shaft and a rudder blade whereby the rudder stock bearing is in the form of a cantilever beam including an internal bore through which the rudder shaft extends the rudder blade is connect... | 05/24/1977 |
| 4016824 | Rudder post tube assembly A rudder post tube assembly for sailing craft having an inverted frusto-conical shell rotatably fitting in an inverted frusto-conical casing which opens out of the bottom of the craft. A rudder post tube is secured to the wall of the shell for rotatably s... | 04/12/1977 |
| 4008677 | Retractible rudder A transom mounted retractible rudder for sailboats or other small vessels. A rudder blade is pivotally mounted on a lower portion of a rudder stock. By means of a handle located adjacent the stern of the boat and connected through a linkage to the rudder ... | 02/22/1977 |
| 3999496 | Swiveling strut fairing for steering of hydrofoil ships A hydrofoil strut assembly for a hydrofoil ship. The assembly has two major parts, the first part serves as a strut and is mounted at one end to the ship's hull foundation and carries a hydrofoil at the other end; the second part serves as a rudder, compl... | 12/28/1976 |
| 3991697 | Twin-screw vessel A ship construction comprises a symmetrical hull having two screw propellers which are symmetrically arranged in respect to the longitudinal central plane of the hull. A rudder is mounted aft of the screw propellers and preferably in the central plane. Th... | 11/16/1976 |
| 3981258 | Waterski sailboat A hydrofoil sailboat with a slender hull and a foil-shaped sail spaced laally therefrom. The hull has one flat side facing the sail and one convex side. The sail is inclined from the vertical toward the hull and is supported at its base ends by a pair of... | 09/21/1976 |
| 3972301 | Apparatus for steering a ship An apparatus for automatically maintaining a ship on a pre-selected course in which a trim tab is secured to a rudder. The trim tab contains a motor therein which is responsive to an electric signal such that the motor will actuate the trim tab when a sig... | 08/03/1976 |
| 3952682 | Steering assembly for a marine craft A marine craft steering assembly comprises a rudder stock mountable on a craft for steering movements, and a rudder blade mounted on the stock to partake of steering movements therewith and to swing relatively to the stock to a raised position if the blad... | 04/27/1976 |
| 3953138 | One-way twist lock for telescopic tubes A locking mechanism operates to selectively lock and unlock a pair of telescopic tubes. A lock base is fixed to one tube and is formed with an eccentric pin. A lock ring is slidably disposed within the other tube and is slipped over and carried by the ecc... | 04/27/1976 |
| 3946693 | Removable inboard rudder An inboard rudder capable of being removed and mounted through a hollow trunk within the hull of the boat and so arranged that the rudder post is pivotally mounted and held in place against one side of the trunk by means of a filler member which is insert... | 03/30/1976 |
| 3939792 | Vertically liftable rudder blade A rudder for an outboard motor having fins normally located in the slipstream produced by the motor propellor. The force of the water on the fins at a predetermined speed of the boat lifts the rudder vertically so that the steering of the boat is substant... | 02/24/1976 |
| 3931779 | Sailing boat A boat having a mainsail and a conventional rudder. The mainsail is supported by a mast and a pivotally mounted boom. A blade is pivotally mounted toward the free end of the boom about an axis that is substantially parallel to the mast. The blade acts as ... | 01/13/1976 |
