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Air pump

  • US 10,253,768 B2
  • Filed: 02/04/2016
  • Issued: 04/09/2019
  • Est. Priority Date: 09/11/2015
  • Status: Active Grant
First Claim
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1. An air pump, comprising:

  • an upper cover, a valve seat, an airbag seat, a base, airbags, a crank shaft, a drive shaft, an eccentric wheel and an electric motor,wherein;

    a lower end of the drive shaft is in active connection with a hole wall of an eccentric hole of the eccentric wheel,vents are opened on the hole wall of the eccentric hole to use as a heat sink and pass through said hole wall radially, allowing the lower end of said drive shaft to be exposed to the outside through said vents, andsaid lower end of said drive shaft, corresponding to said vents, is formed into a reduced diameter section, allowing edges of said vents to be positioned on said reduced diameter section.

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