Pumps – Motor driven – Electric or magnetic motor
Reexamination Certificate
1999-03-01
2001-03-13
Look, Edward K. (Department: 3745)
Pumps
Motor driven
Electric or magnetic motor
C092S059000, C092S118000, C092S169100, C417S550000
Reexamination Certificate
active
06200110
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a compressor, and more particularly to an air compressor.
2. Description of the Prior Art
Typical air compressors comprise a piston slidably received in a housing, and a motor coupled to the piston for moving the piston along the housing in a reciprocating action. However, the outlet air may not be adjusted.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional air compressors.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide an air compressor in which the outlet air may be adjusted to the required condition.
The other objective of the present invention is to provide an air compressor in which the piston housing may be adjusted to different positions.
In accordance with one aspect of the invention, there is provided an air compressor comprising a housing including a tube extended therefrom and including a passage formed therein and communicating the housing with the tube, the housing including a chamber formed therein and including a tapered surface formed therein and close to the tube, a piston slidably received in the chamber of the housing, and means for forcing the piston to move along the chamber of the housing in a reciprocating action and to force air in the chamber of the housing out through the tube via the passage. The tapered surface is provided for allowing the piston to smoothly move along the chamber of the housing.
The tube includes a stop slidably received therein, and means for forcing the stop to resiliently block the passage. The forcing means includes a spring engaged with the stop, and means for adjusting a resilience force of the spring against the stop.
The piston includes an aperture formed therein for allowing the air to flow into the housing from an outside of the housing, and means for resiliently blocking the aperture of the piston. The aperture blocking means includes a spring blade having a first end secured to the piston and having a second end for blocking the aperture of the piston, the air is allowed to flow into the housing via the aperture when the piston is moved away from the tube.
A base is further provided, a pin is eccentrically secured to the base, the piston includes a rod extended therefrom and secured to the pin, and means for rotating the pin to move the piston along the chamber of the housing in the reciprocating action. The piston forcing means includes a motor secured to the base and having a pinion, a gear is rotatably secured to the base at a pivot shaft and engaged with the pinion of the motor, the pin is extended from the gear and eccentric relative to the pivot shaft.
The housing may be adjusted away from or toward the pin for adjusting the piston relative to the tube and for adjusting the air compressed by the piston when the piston is moved along the chamber of the housing.
Further objectives and advantages of the present invention will become apparent from a careful reading of a detailed description provided hereinbelow, with appropriate reference to accompanying drawings.
REFERENCES:
patent: 1055437 (1913-03-01), Aldridge
patent: 3961868 (1976-06-01), Droege, Sr. et al.
patent: 5655887 (1997-08-01), Chou
Baxley Charles E.
Lazo Thomas E.
Look Edward K.
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