Molded plastic control lock knob with push and/or pull feature
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 15, 1983
Grant Date -
N/A
app pub date -
Sep 3, 1980
filing date -
Sep 3, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device is disclosed for use with adjustable rotary controls such as potentiometers that have a push and/or pull feature to provide a means for locking the control knob and to provide varying amounts of drag force to aid in fine adjustments. A locking shoe assembly having integral locking shoes with cam surfaces is attached to the control panel with the rotary control shaft extending through its center. A locking knob with internal cams fits over the locking shoe assembly and is held in place with an annular retention ring. A control knob with an integral land surface is attached to the rotary shaft and extends into the locking shoe assembly. Rotation of the locking knob engages the various cam surfaces thus binding the land surface and the control knob.
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