Air pump
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United States of America Patent
Stats
-
Sep 25, 2007
Grant Date -
Jun 15, 2006
app pub date -
Dec 9, 2004
filing date -
Dec 9, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An air pump includes a body being composed of two semi-housings. A sleeve is received in an opening at a top of the body. A rim is formed at a top of the sleeve and an annular recess is defined at a bottom of the sleeve. By fasteners through the rim, the sleeve is secured in the body. A motor is mounted on the body for driving a gear assembly in the body. A piston has a movable block movably received in the sleeve and a linkage eccentrically connected to the gear assembly. A discharge valve with a nozzle is mounted on the sleeve for discharging compressed air out from the nozzle. Whereby, the sleeve can be made with a small thickness, so its cost is low. Moreover, it is easy to install the sleeve in the correct position to ensure the piston to smoothly reciprocate in the sleeve.
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