Rock drill

United States of America Patent

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Jun 28, 2005
Grant Date
Jun 26, 2003
app pub date
Feb 24, 2001
filing date
Mar 2, 2000

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Abstract

A rock drill for rotary hammers is proposed in which a conveying helix (3) having main and secondary webs (6 to 9) is used. A one-piece carbide crown, with its wing-shaped main and secondary lips (24 to 27), is butt-welded to the conveying helix.

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Patent Owner(s)

Patent Owner	Address
HAWERA PROBST GMBH	SCHUTZENSTRASSE 77 RAVENSBURG 88212

International Classification(s)

B23B:TURNING; BORING

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[Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Fuss, Mathias	Leinfelden-Echterdingen, DE	5	50

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Rock drill

Number of patents in Portfolio can not be more than 2000

United States of America Patent

10220243

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PATENT NO	6910838
APP PUB NO	20030118414A1
SERIAL NO	10220243
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
June 28, 2005	US,6910838,B2 US6910838B2	GRANTED PATENT AS SECOND PUBLICATION
June 26, 2003	US,20030118414,A1 US20030118414A1	FIRST PUBLISHED PATENT APPLICATION

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10220243

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