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US 6,280,147 B1Granted
Apparatus for adjusting the stroke length of a pump element
AssigneeLiquid Metronics Incorporated
InventorsEnrique L. Kilayko, Liam Ryan
Life of this patent
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Abstract
A metering pump includes an apparatus for adjusting the stroke length of a pump element. The apparatus comprises a lever having a cam which is contacted by the pump element.
Claims17
A metering pump, comprising:
- a pump element having a stroke length movable within a range of positions;
- a circuit for modulating electrical power to a power unit in dependence upon the position of the pump element;
- and
- an apparatus for adjusting the stroke length of the pump element including a lever;
- wherein the apparatus for adjusting the stroke length of the pump element contacts the pump element at a position within a range of positions to determine the stroke length of the pump element.
2 more elements
A metering pump having a power unit and a movable armature having a stroke length, comprising:
- a sensor for detecting armature position;
- a driver circuit coupled to the power unit and delivering electrical power to the power unit;
- a programmed processor responsive to the sensor for controlling the driver circuit such that electrical power is delivered to the power unit in dependence upon the position of the armature;
- and
- an apparatus for adjusting the stroke length of the armature including,
- a lever having a first portion which is manually operable and a second portion;
- a cam coupled to the second portion of the lever including a stop surface having a position which is variable as a function of the position of the first portion of the lever, wherein the position of the stop surface determines the stroke length.
4 more elements
Dependencies are inferred from the claim text.