Submarine toy moved by propellers - has propellers at one or both ends of toy driven by rubber band

摘要

The submarine toy is moved by inverse propellers activated by one or two rubber band motors or motors. The propellers move with regard to the shell and can be placed at each extremity of the shell or both at the same extremity. One of the propellers can be joined to the shell which then rotates when the toy is diving. The propeller can be replaced by a spiral sheet wound round the shell.