Drill bit

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9925691
SERIAL NO

15114286

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A drill bit includes a pointed head and a bit shaft. A dust suction passage is formed in the bit shaft. A hole with an opening is formed in the pointed head or in a portion of the bit shaft, the portion being near a distal end of the bit shaft. The bit shaft includes a first portion, the first portion including a core and a rib. The core extends in an axial direction, and is thinner than the pointed head. The rib protrudes radially outward from a side surface of the core, and extends over an entire length of the first portion. The dust suction passage extends through the core in the axial direction.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
KABUSHIKI KAISHA MIYANAGAMIKI-SHI HYOGO 673-0433

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miyanaga, Masaaki Miki, JP 53 444

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