Skate baton apparatus

作者: David P. Whalen

DOI:

关键词: AcousticsTraffic conditionsStructural engineeringEngineering

摘要: A baton structure having first and second cylindrical housings arranged for securement relative to one another are provided, wherein each of the include housing tubes rods telescoping extension locking housings, with a resilient tip use as friction promote displacement along skating surface by an individual. The includes reflective mirror viewing traffic conditions rearwardly individual, fluid dispenser dispense defensive such (MACE) therefrom.

参考文章(2)
Imants Brolis, Stuart J. Chirtel, Roller skating pole ,(1991)
David M. Mace, Roller skate pole ,(1979)