Two stage stepped piston air compressor
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United States of America Patent
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-
Apr 14, 1987
Issued Date -
N/A
app pub date -
Dec 16, 1981
filing date -
Dec 14, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An air compressor with a cylinder (1) has a stepped piston (4) movably disposed therein which performs compression in both stroke directions to provide two-stage compression. Each compression stage is associated with at least one inlet and outlet valve (34, 36 or 35, 37), whereby one outlet opening (22) of a lower compression stage is connected with an inlet opening (20) of a higher compression stage. All valves (34-37) are disposed on the upper side of the compressor in the vicinity of the cylinder head (13; 30). The compressor has few individual parts and the valves are easily accessible for maintenance.
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