Land vehicles – Runner vehicle – Central runner
Patent
1995-06-07
1998-05-19
Camby, Richard M.
Land vehicles
Runner vehicle
Central runner
280 15, 280 142, 280817, A63C 500
Patent
active
057527091
ABSTRACT:
Ski apparatus with two outer skis and a third ski, located between the two outer skis, coupled to the outer skis by four cranks, connected as a front pair and a rear pair. Each crank has a gear on one end and a free end. The free end of a crank is attached to a journal box on an outer ski to permit the crank to rotate freely. The gear of the crank from one outer ski meshes with the gear of a crank attached to the other outer ski, coupling the cranks in pairs and causing the cranks to rotate in opposite directions. The gears from each pair are contained in a gearbox attached to the third or middle ski. In one embodiment, the journal box may be slidably attached to the ski, to permit the ski to move forward and backward relative to the journal box, thereby permitting the user to alternately advance and retreat the skis relative to each other. In another embodiment, ski bindings are attached to the center ski by means of a linkage to allow vertical movement of the ski bindings relative to the center ski, thereby allowing the ski apparatus to be canted without the ski bindings interfering with the outer skis.
REFERENCES:
patent: 32360 (1861-05-01), Goodyear et al.
patent: 3862764 (1975-01-01), Hartz
patent: 5458370 (1995-10-01), Melcher
patent: 5558354 (1996-09-01), Lion
Camby Richard M.
Titus John D.
Vanaman Frank
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