POSITIVE POSITIONING DEVICE AND SYSTEM
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United States of America
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Issued Date -
Jan 16, 2020
app pub date -
Jul 13, 2018
filing date -
Jul 13, 2018
priority date (Note) -
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Abstract
A positive positioning device comprises a plurality of stacked plates, a body, a spring-biased piston and a piston release device. The plurality of stacked plates have a central opening defined to receive a pivot shaft. The body houses the plurality of stacked plates and has an internal bore within which a cylinder is defined. The spring-biased piston is shaped to slide within the bore to apply a force to the stacked plates to resist rotation of a pivot shaft inserted through the central opening in the stacked plates. The piston release device is actuatable by a user to release the piston to decrease force applied to the stacked plates and allow free rotation of the pivot shaft.
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