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Double / Double


1. The existing inflating needle is an independent part. 2. Inflating needle is easy to lose and sometime poor connected with pump's vent. Needs is simple, but the user experience is so bad. Double is a dual purpose inflating needle, which combines a inflating needle with a tire air nozzle. User can switches two different modes through the sliding button. To pump a ball, the gas releases through the needle’s hole on the Top. To pump a tire, the inflating needle retracts into the rubber band while the air releases from the inner ring.


Rochester institute of technology

Rochester institute of technology
Rochester, United States


Rochester institute of technology

Rochester institute of technology
Cleveland, United States

Danwei Ye Yu Liu Yakun Zhang