Carriage latch for a disc drive
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United States of America Patent
Stats
-
Dec 29, 1987
Grant Date -
N/A
app pub date -
Aug 29, 1986
filing date -
Aug 29, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A dynamic lock for a disc drive carriage incorporates a plunger that captures an extension on the carriage. The plunger is guided by a solenoid and frame. The plunger is spring loaded such that it normally is biased into the carriage to restrain the carriage in the home locking position. The solenoid can withdraw the plunger and allow release of the carriage. A counterweight rotates about a pivot provided on the frame adjacent the plunger. A finger that protrudes from the counterweight rides in a recess on the plunger. In the event of a sudden shock to the disc drive, the shock force is transmitted from the plunger through the finger to the counterweight. The counterweight is designed to be of equal mass to the plunger, whereby the shock force is neutralized, preventing the plunger from moving back toward the solenoid and releasing the carriage.
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