Bit retention system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jun 6, 2000
Grant Date -
N/A
app pub date -
May 1, 1998
filing date -
May 1, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A substantially tubular retainer member is provided, having a bore of substantially uniform internal diameter which can slip over the retention shoulder of the percussion bit, whether that shoulder is solid or threaded. Pins are then driven through holes in the retainer, under the retention shoulder. The pins retain the head of the bit in the event of bit breakage.
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