Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Lopin Wang0
Date of Patent
April 5, 2022
0Patent Application Number
168109310
Date Filed
March 6, 2020
0Patent Citations
Patent Citations Received
Patent Primary Examiner
An air pump includes a mouthpiece, an adjustment mechanism, and an air cylinder mechanism that includes a small-diameter cylinder permitted to move relative to the adjustment mechanism. When the small-diameter cylinder is moved away from the adjustment mechanism, air from external environment is sucked into a first space of the air cylinder mechanism. The adjustment mechanism is operable to switch between a singular pumping state, where air in the first space is released to the external environment when the small-diameter cylinder is moved toward the adjustment mechanism, and a dual pumping state, where the air in the first space is injected into the mouthpiece when the small-diameter cylinder is moved toward the adjustment mechanism.
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