Arch clamp foot lifting apparatus
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United States of America Patent
Stats
-
Dec 26, 2000
Grant Date -
N/A
app pub date -
Jun 24, 1998
filing date -
Sep 18, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Since a solenoid device generates the maximum drawing force at the final position of the retracting stroke of a plunger when it retracts into the solenoid device, the drawing force becomes so large at a position close to a pressing end position of a pressing member that energy is consumed than necessity, and the solenoid device is made large-sized. Accordingly, an arch clamp foot lifting apparatus of the present invention solved this problem by connecting a wedge-shaped block member to a plunger of the solenoid device and retaining an upper portion of the pressing member on a cam surface of a block member through a driven portion.
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