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US 5,102,306 AGranted
AC/DC air pump
OwnerKuo-Sheng Liuinventor
Life of this patent
Estimating the term…
Abstract
An AC/DC air pump used for filling air into car tire, the housing of the air pump accomodates a driving motor with radiative fan, by applying a large gear driven by motor, and the large gear is gearing the link eccentrically to drive the piston of air cylinder for engaging in reciprocating motion so as to provide high or low pressure air-filling effect.
Claims5
An AC/DC air pump for inflating air into a car tire or the like comprising:
- an air cylinder having a piston operable to produce a high pressure air supply;
- and
- a rotary electric motor for providing rotational movement about an axis of rotation and coupled to said cylinder for reciprocally driving said piston, said motor comprising a stator, a rotatable output shaft at said axis, and a rotor fixedly coupled to said output shaft;
- said rotor comprising a magnetizable core, a first driving winding wound on said core and energizable from a direct current power supply, and a second driving winding wound on said core in coaxial relationship with said first driving winding and energizable from an alternating current power supply, said first driving winding having an axial length that is coextensive with said second driving winding, wherein said first and second driving windings are in partial overlapping relationship;
- said stator comprising at least one pair of magnetic poles extending continuously along said axial length for interaction with flux produced by each of the rotor driving windings;
- whereby said motor may be connected to either said direct current power supply or said alternating current power supply to drive said air cylinder.
3 more elements
Dependencies are inferred from the claim text.