PUMP MECHANISM
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United States of America Patent
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app pub date -
Jun 29, 2015
filing date -
Jun 24, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A pump mechanism includes a crankshaft defining a crankshaft longitudinal axis therethrough; three cylinders arranged around the crankshaft, each of the three cylinders defining a cylinder longitudinal axis therethrough, each cylinder longitudinal axis extending away from the crankshaft in a substantially radial direction, adjacent cylinder longitudinal axes enclosing predetermined angles (Wz) about the crankshaft longitudinal axis; and a piston corresponding to each of the three cylinders. Each crank has a predetermined angular offset (WK) relative to an adjacent crank, and the predetermined angular offset (WK) is selected in accordance with the predetermined angles (Wz), in such a way that phase shifts between each piston and a sequentially actuated piston during a rotation of the crankshaft are equally large. A sum of the predetermined angles (Wz) between adjacent cylinder longitudinal axes, over all of the cylinder longitudinal axes, is less than or equal to 180 degrees.
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