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A water craft constituted by a fiberglass body with a streamlined bow in back of which is a recess forming a seating compartment. The rear end of the body is formed to provide a keel. Front-to-back guides in the seating compartment support a shiftable seat having dismountable arms that extend latera

A water craft constituted by a fiberglass body with a streamlined bow in back of which is a recess forming a seating compartment. The rear end of the body is formed to provide a keel. Front-to-back guides in the seating compartment support a shiftable seat having dismountable arms that extend laterally to opposite sides of the body to support floats at their ends. In front of the seat, pedals are supplied which are kinematically joined to a central shaft within the body that is connected to a drive shaft that emerges from the body for driving a propeller.

대표청구항 ▼

An occupant-propelled marine vessel, comprising: (a) an elongated main body buoyant in water and being of streamlined construction, said body extending from a bow at the front of the body along a longitudinal axis to a stern at the rear of the body, said body having a submerged keel lying in a verti

An occupant-propelled marine vessel, comprising: (a) an elongated main body buoyant in water and being of streamlined construction, said body extending from a bow at the front of the body along a longitudinal axis to a stern at the rear of the body, said body having a submerged keel lying in a vertical plane longitudinally extending centrally through the body, and a single submerged rudder mounted at the stern for pivoting movement about a vertical axis normal to said longitudinal axis, said body further having an above-water deck and an interior below the deck; (b) a pair of side arms mounted at opposite sides, and extending transversely, of the main body; (c) a pair of side floats buoyant in water and being of streamlined construction, said side floats being respectively mounted at outer ends of the side arms at opposite sides of the vertical plane; (d) a seat mounted on the deck for adjustment along the longitudinal axis; and (e) occupant-propulsion means for enabling a seated occupant to forwardly propel the vessel by the use of the occupant\s feet, including (i) a pedal shaft in front of the seat and extending along an inclined pedal axis from the interior both forwardly and upwardly through the deck, (ii) two foot pedals connected above the deck to the pedal shaft at opposite sides thereof and engageable with the occupant\s feet, for repetitively driving the pedal shaft in alternate directions about the inclined pedal axis, (iii) a drive shaft within the interior of the body and extending longitudinally along a drive axis, said drive shaft being operatively connected to the pedal shaft and being turnable in alternate directions about the drive axis, (iv) an outboard propeller mounted at the stern on an output shaft for joint rotation with the output shaft about an output axis parallel to the longitudinal axis, and (v) a reversing transmission within the interior of the body and operatively connected between the drive shaft and the output shaft, for converting the alternate turning of the drive shaft into a uni-directional rotation of the output shaft together with the propeller, thereby forwardly propelling the vessel regardless of the direction in which the drive shaft is turned, said reversing transmission including a primary gear mounted on the drive shaft for joint turning in alternate directions about the drive axis, a secondary gear in meshing engagement with the primary gear and turnable in alternate directions by the primary gear about a first gear axis parallel to the drive axis, and a pair of tertiary gears colinearly mounted on a gear shaft extending along a second gear axis parallel to the first gear axis, one of the tertiary gears being in meshing engagement with the primary gear and operative for turning the gear shaft solely in one predetermined direction, the other of the tertiary gears being in meshing engagement with the secondary gear and operative for turning the gear shaft solely in said same one predetermined direction.