SCREW COUNTER AND ELECTRONIC DEVICE USING THE SAME
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United States of America Patent
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N/A
Issued Date -
Mar 15, 2012
app pub date -
Jun 29, 2011
filing date -
Sep 13, 2010
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A screw counter includes a first interface, a second interface, and a processing unit. The first interface connected to a screwdriver, the screwdriver is adapted for screwing a predetermined total number of screws into a workpiece to perform a screwing operation on the workpiece. The second interface is connected to a detecting unit. The detecting unit detects a start time and a finish time of the screwing operation. The processing unit counts a variable, each time when the processing unit is changed from a first state to a second state, the variable adds one; a total added value of the variable is calculated during a time interval between the start time and the finish time to acquire a total number of screws which are completely screwed into the workpiece.
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