A toy as a floating - and the fly tool play, and so forth. With the spring barrel factory or e - motor.

• 1. 筒形飞行玩具 [P] . 中国专利： CN2278515Y . 1998.04.15
• 2. 一种使浮动活塞退出深孔活塞筒的工具 [P] . 中国专利： CN107414735A . 2017-12-01
• 3. In a toy vehicle, particularly play tool car with an electric motor drive, the spring barrel factory - or flywheel - drive arranged movable fig. [P] . 德国专利： DE1147882B . 1963-04-25

  机译： 在玩具车中，特别是在具有电动马达驱动器的游乐工具车中，弹簧筒工厂或飞轮驱动器布置为可移动。

• 4. Barrel factory driven toy vehicle, particularly play tool car [P] . 德国专利： DE1062595B . 1959-07-30

  机译： 桶式工厂驱动的玩具车，特别是游乐工具车

• 5. Barrel factory operated toy vehicle, for example, play tool car, with a on the vehicle frame in a rotary - and tiltable loading surface. [P] . 德国专利： DE1731058U . 1956-09-27

  机译： 桶式工厂操作的玩具车，例如游乐工具车，在车架上具有可旋转且可倾斜的装载表面。

• 1. "Powerful Play: Using Toys as Tools in Engineering Education" [C] . Doug Schmucker, Anna P. Phillips, Paul J. Palazolo, American Society for Engineering Education Annual Conference and Exposition . 2002
• 2. The play pyramid: a play classification and ideation tool for toy design [O] . Barry M. Kudrowitz, David R. Wallace 2010