Patent ID: 6638132
Filing Date: 2003-10-28
Classification: A63H

Abstract:
A rubber band driving device for a two-propeller model plane, comprisinga power rubber band, a wooden skeletal bar, a rubber band winder, a rubber band locator, a power distributor, first and second transmission bars, first and second support bars, a left propeller gear box, a right propeller gear box, and left propeller blades and right propeller blades, wherein, said wooden skeleton bar is fitted with said rubber band locator between a first end and a second end of said wooden skeleton bar, said rubber band winder being connected at said first end, said power distributor and a propelling direction adjuster being connected proximate said second end, said power rubber band having one end being connected to said rubber band winder while another end of said rubber band is linked to said power distributor: said power distributor being connected to said first and second transmission bars and said first and second support bars, said power distributor comprises a distributor shaft fixed to a driving gear, said driving gear being engaged with a first end gear arranged at one end of each said first and second transmission bars, and rotatably engaging an integral component comprising a switch disc gear, a switch disc pivot and a switch disc, said integral component being moveably fitted through a switch disc bearing relative to said power distributor; said right and left propeller gear boxes being respectively connected with and driving said right and left propeller blades through a second end gear fitted at an end of each said transmission bars opposite said first end gear, and respectively through a bevel gear being disposed in said right propeller gear box and a bevel gear being disposed in an opposite position in said left propeller gear box.