Adjustable stroke drive for a displacement piston pump
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United States of America Patent
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-
Dec 31, 1996
Grant Date -
N/A
app pub date -
Aug 4, 1994
filing date -
Aug 7, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A stroke drive, particularly for displacement piston pumps, has a first eccentric (8) on which a second eccentric (9) is mounted. A push rod bearing (10) is connected to the second eccentric (9). The eccentrics (8, 9) are connected to each other by way of an intermediate drive (17) which conveys a synchronous rotation to the eccentrics. An adjusting device (16) serves to change the relative position of the eccentricities (e1, e2) of the eccentrics (8,9) relative to each other. In this manner the length of the stroke is steplessly adjustable from a maximal value to a minimal value.
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