Lubricant-dispensing system and method of operating same
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United States of America Patent
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Dec 17, 2013
Grant Date -
Nov 6, 2008
app pub date -
Apr 23, 2008
filing date -
May 4, 2007
priority date (Note) -
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Abstract
A lubricant dispenser has a housing whose interior is subdivided by a shiftable piston into a generally closed gas compartment and a lubricant compartment having an outlet port and filled with a body of lubricant. A gas generator associated with the gas compartment is electrically energizable to produce gas and thereby pressurize the gas compartment, shift the piston, and express lubricant from the outlet. A controller including a power supply and a circuit is connected between the power supply and the gas generator for feeding current from the power supply to the gas generator. During a first predetermined part of an operational cycle of the dispenser, the gas generator is energized at a first level. During a second predetermined part of an operational cycle after the first time, the gas generator is energized at a second level lower than the first level.
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