Overload clutch particularly for thread-cutting chucks or the like
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United States of America Patent
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Sep 22, 1987
Grant Date -
N/A
app pub date -
Sep 11, 1985
filing date -
Oct 11, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A safety or overload clutch, particularly for thread-cutting chucks or quick-change inserts thereof, has a cylindrical clutch ring and a chuck body mounted coaxially inside the clutch ring, with a ball pocket clutch arranged between the inside surface of the clutch ring and the external surface of the chuck body. The ball pocket clutch provides for an adjustable releasing or disengagement of the torque, whereby one of the surfaces is provided with ball pockets of less depth than the diameter of the clutch balls, and the opposite surface is provided with counterpockets having release or disengagement openings, in which, in case of an overload, the clutch balls can escape against the effect of a spring-stressed axial pressure ring into a stable release position. The pressure ring is movable in the clutch ring, whereby the ball pockets are axially extending grooves and the counterpockets, at least on one side, open into open release channels which are axially offset in relation to the pressure ring, whereby the width of the release channels basically corresponds to the diameter of the clutch balls.
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