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US 2015/0028656 A1Published application
Bit Holder
AssigneeThe Sollami Company
InventorPhillip Sollami
Life of this patent
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Abstract
An improved bit holder includes a larger bit shank bore and an enlarged upper shank segment or band with a taper of up to 7 degrees per side that provides an interference fit between the top of the shank and top of the bit block bore when the bottom of the bit holder body seats on the top of the bit block bore. An annular tapered void adjacent the bit holder tire portion provides for ease of bit holder extraction.
Claims8
A bit holder body and a generally cylindrical shank depending from the bottom of said bit holder body,
- said shank including:
- an upper portion generally closely subjacent a bottom of said bit holder body, said upper portion including an outer taper surface of up to 7 degrees per side with a central axis of said bit holder.
Dependencies are inferred from the claim text.