Adjustable set back control device
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United States of America Patent
Stats
-
Oct 9, 1990
Grant Date -
N/A
app pub date -
Oct 28, 1987
filing date -
Oct 28, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for adjustably controlling the position and set-back of a piston rod which extends from a damping cylinder used on an airfeed peck drill. The device includes a plurality of ball members which surround the piston rod. The ball members are positioned against the piston rod by a spring biased cone having a tapered internal surface. The balls are further positioned with respect to the cone by a spring biased ball separator which is movable with respect to the cone by air pressure. The travel of the piston rod is made adjustable by a nut member threadably engaged with the housing.
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