亚洲Av永久无码天堂影院,成人激情五月天,伊人久久亚洲综合影院首页,欧美性xxxxx极品-久久综合第一页,亚洲国产欧美日韩精品一区二区三区,91av中文,日韩2页

Contact Us

Tiny Cooling Fan invention Time

Date: 2015-5-12   Click: 1486 Times

"Tiny Cooling Fan" time later invention, the mechanical roof fan originated in 1830, a man named James Byron was inspired by American watches from the structure, the invention can be fixed on a ceiling, with spring driven mechanical fan. This fan blades rotate slowly bring cool people feel happy, but have climbed the ladder to the winding, very troublesome. In 1872, a Frenchman named Joseph has developed a turbo start by clockwork, gear drive chain means mechanical fan, this mechanical fan "Tiny Cooling Fan" more delicate than Byron invention, the use is also convenient . 1880, American Shule first blade mounted directly on the motor, connect the power supply, the rapid rotation of the blades, cool breeze blowing, which is the world's first "Tiny Cooling Fan".

Back to: Industry news

+86-0769-83660708

Home Product News Contact