Planning parts demand coverage based on variable percentage of substitution parts
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United States of America Patent
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Jun 28, 2011
Grant Date -
May 15, 2008
app pub date -
Nov 15, 2006
filing date -
Nov 15, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method is provided for meeting anticipated parts demands, by controlling substitute part inventory coverage based on percentage requirements. The method is characterized by substitution sets determined as a ratio of the current PN level. In one embodiment, current parts of specified type and substitute parts functionally equivalent to the current parts are respectively kept in inventory. This embodiment includes specifying a maximum percentage of demand for the current parts that is allowed to be filled using substitute parts. The number of additional parts needed to cover a demand is determined, when the demand specifies a total number of current parts exceeding the number thereof in inventory. A number of substitute parts is then assigned from inventory to cover the demand, up to a number that does not exceed the specified maximum percentage of the specified total number. When the number of additional parts needed is greater than the number of assigned substitute parts, a number of current parts equal to the difference therebetween is then purchased.
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