In-hole motor drill with bit clutch
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 11, 1980
Grant Date -
N/A
app pub date -
Nov 2, 1978
filing date -
Nov 2, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An in-hole motor drill assembly has the rotor of the motor connected to the drill bit by a slidable rotary drive connection, and normally disengaged torque transmitting members are engageable, if desired, to lock the bit and motor housing together for rotation of the bit by rotation of the motor housing. The torque transmitting members also interlock to prevent disengagement when an upward pull is applied during rotation of the bit.
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Cited Art Landscape
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