B - Operations – Transporting – 23 – B
Patent
B - Operations, Transporting
23
B
77/17
B23B 45/00 (2006.01) B25D 16/00 (2006.01) H01H 9/06 (2006.01)
Patent
CA 1080005
FORWARD BIASED SWITCH FOR A REVERSIBLE HAMMER DRILL ABSTRACT OF THE INVENTION A hammer drill having a reversible switch which is forward biased normally to prevent the drill from operating in the hammer mode while the switch is in the reverse position. This is a precaution to prevent damage to the clutch teeth which are designed for ratchet action when the tool is operated in the forward direction, but will lock down in reverse to stall tool or damage the mechanism.
318841
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