The invention relates to a drive device for a surfboard, comprising movable elements for increasing the propulsion resulting from said drive device. Said elements are set in motion by the user of the surfboard. The user can thus travel through the water with their surfboard while simultaneously training their body.

The invention relates to a drive device for a surfboard, comprising movable elements for increasing the propulsion resulting from said drive device. Said elements are set in motion by the user of the surfboard. The user can thus travel through the water with their surfboard while simultaneously training their body.

A jewelry display includes a ferromagnetic planar substrate having a front surface opposite a back surface. A bracket is configured to be attached to a wall, the bracket comprising at least one bracket magnet which is a permanent magnet. The back surface of the ferromagnetic planar substrate is configured to removably attach to the bracket due to the magnetic force of the at least one bracket magnet. A plurality of jewelry fixtures are configured to be removably attached to the front surface of the ferromagnetic planar substrate. Each jewelry fixture includes at least one permanent fixture magnet and a jewelry holding structure. The at least one permanent fixture magnet of each jewelry fixture is magnetically attracted to the ferromagnetic planar substrate. The at least one bracket magnet may be at least 2, 5, 10 times or more as powerful as the at least one permanent fixture magnet.

A jewelry display includes a ferromagnetic planar substrate having a front surface opposite a back surface. A bracket is configured to be attached to a wall, the bracket comprising at least one bracket magnet which is a permanent magnet. The back surface of the ferromagnetic planar substrate is configured to removably attach to the bracket due to the magnetic force of the at least one bracket magnet. A plurality of jewelry fixtures are configured to be removably attached to the front surface of the ferromagnetic planar substrate. Each jewelry fixture includes at least one permanent fixture magnet and a jewelry holding structure. The at least one permanent fixture magnet of each jewelry fixture is magnetically attracted to the ferromagnetic planar substrate. The at least one bracket magnet may be at least 2, 5, 10 times or more as powerful as the at least one permanent fixture magnet.

A motion transfer apparatus comprising a frame; at least one wheel shaft operably coupled to at least one wheel, the at least one wheel shaft rotatable on the frame; a gear assembly coupled to the at least one wheel shaft; at least one pedal engaging the gear assembly and movable by an appendage within a predetermined angular range to apply a force; at least one crank arm with a predetermined length coupled to the at least one pedal and to the gear assembly for applying the force directly from the pedal to the gear assembly to rotate the at least one wheel; and a restorative member generating a restorative force to return the pedal and the at least one crank arm from a lower stroke position to an upper stroke position.

The present invention relates to a mechanism comprising a frame (10), levers (7), pedals (19,17,13), clutches (01), and/or freewheels, gears and/or pulleys, rotation shafts (8,9, 11, 14, 15), and/or push shafts levers (20) which convert the reciprocating pushing motion into a rotational motion of the different vehicles or whatever needs of driving force, by the muscular effort of the legs of at least one user in a vertical position (standing) and/or a user in a horizontal position (sitting) or even completely lying on the back or on the stomach in order to push the levers (7) which bounce back and forth around a horizontal axis (HX) and/or two parallel and symmetrical vertical axes (VX1 and VX2).

The present invention relates to a mechanism comprising a frame (10), levers (7), pedals (19,17,13), clutches (01), and/or freewheels, gears and/or pulleys, rotation shafts (8,9, 11, 14, 15), and/or push shafts levers (20) which convert the reciprocating pushing motion into a rotational motion of the different vehicles or whatever needs of driving force, by the muscular effort of the legs of at least one user in a vertical position (standing) and/or a user in a horizontal position (sitting) or even completely lying on the back or on the stomach in order to push the levers (7) which bounce back and forth around a horizontal axis (HX) and/or two parallel and symmetrical vertical axes (VX1 and VX2).

The present disclosure is a forward-facing rowing mechanical device for on-water paddling transportation equipment. The device is comprised of a novel mechanism which re-diverts effort from legs of the rower to the opposite direction. Therefore, the water propelling direction is changed by the mechanism from backward driving to forward driving. The device includes a backbone; a seat on top of the backbone; a sliding rigger carrying oars; a foot plate for receiving effort from the rower; the effort diverting mechanism for changing driving direction and other necessary peripheral parts.

The present disclosure is a forward-facing rowing mechanical device for on-water paddling transportation equipment. The device is comprised of a novel mechanism which re-diverts effort from legs of the rower to the opposite direction. Therefore, the water propelling direction is changed by the mechanism from backward driving to forward driving. The device includes a backbone; a seat on top of the backbone; a sliding rigger carrying oars; a foot plate for receiving effort from the rower; the effort diverting mechanism for changing driving direction and other necessary peripheral parts.

Examples are disclosed that relate to watercraft with retractable drive mechanisms. One example provides a watercraft including a hull having a receiving compartment, and also having a deck. The watercraft also includes a drive unit extending through the deck and the hull of the watercraft and being configured to receive rotational input. The drive unit includes a driveshaft and propeller moveable between an extended position in which the propeller is positioned underneath the hull and a retracted position in which the propeller is positioned at least partially within the receiving compartment.