Abstract: A generally trapezoidal fin (22) is pivotally fastened to a casing which can receive the entire fin, permitting total retraction of the fin. The casing is formed with at least one notch (42) for selectively positioning the fin relative to the casing. In a preferred embodiment, the fin is operated by a lever member (26) which has a knob (50) at its distal end for use in positioning the fin (22) from above.

Abstract: A child's ridable vehicle is disclosed which includes generally first and second body portions with proximal ends overlapped and secured at alignment apertures to a frame of the vehicle. The second body portion overlaps the first body portion at sill portions of each which are inverted U-shaped sections overlapped on the frame. The second body portion has a unitary post bushing passing through the alignment aperture in the first body portion and into an aperture in the frame to be secured by a threaded fastener and this locates both body portions relative to each other and to the frame. The two body portions may be assembled by placing them at a wide angle V and nesting them together then straightening out the two parts to be in common plane and mating them with the frame with a threaded fastener inserted through the frame and securing the two overlapped body portions to the frame.

Abstract: A floating, reclining lounge (10) including a mechanism to permit it to be easily adjusted in the aquatic environment without the need for manually applied lifting force. In one embodiment, the mechanism includes a slotted bracket (30) with resilient sockets which enable the seat of the lounge to be moved and secured in select positions of adjustment. In another embodiment, the mechanism include a slotted bracket (100) having a rack (110) and pinion (108) to facilitate such adjustment.

Abstract: A child's battery-powered riding toy includes a floorboard with two spring-biased switches that must be closed by the child operator to place the vehicle in self-powered motion and can only be reached simultaneously of the child operator is safely aboard. The battery power supply is capable of providing high or low voltage to the motor drive, but a reversing switch is connected between the battery power supply and the motor drive, and it must be in its "forward" position to receive the high battery voltage. In its "reverse" position, the reversing switch separately connects the motor drive to only the low battery voltage. The spring-biased switch connected directly to the reversing switch has a dynamic braking load connected to it to be placed across the motor drive when the reversing switch is in its "forward" condition and the latter spring-biased switch is allowed to be under the control of its biasing spring.

Abstract: The invention is an improvement in the construction of the sailboard portion of windsurfers wherein the usual hard-foam slab hull typical of surfboard construction is replaced by a slab of soft foam, the only rigid structure of the entire board being a pair of closely spaced fiberglass stringers longitudinally extended along the midline of the board, and mounts for the mast, daggerboard and fin, which mounts are sandwiched between the two longitudinal stringers which are embedded centrally in the soft foam slab.

Abstract: A sailboat hull comprised of a monolithic structure fabricated of low-density polymer foam and having integrally formed therewith an internal H-shaped structure. The H-shaped structure serves to reinforce the hull and provides buoyancy chambers extending along either side of the hull and a centerboard trunk medially of the hull. The chambers define leg space therebetween and are so proportioned that said leg space is buoyantly supported above the surface of the water when the hull is in a tipped vertically disposed position. The hull is provided with a rudder comprised of a pair of separate cheek plates vertically disposed in spaced parallel relationship to one another and held in this position by extruded aluminum pintle blocks secured between the plates. The pintle blocks extend forwardly of the plates and carry aligned pintle pins. A tiller is fixedly attached between the upper edges of the plates and the rudder is pivotally secured between the plates beneath the tiller.