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Class Information
Number: 173/198
Name: Tool driving or impacting > Work cleansing > Using vacuum or reverse circulation
Description: Apparatus using either (1) a suction or (2) a circulation of fluid up through a tool in a direction opposite normal operation to remove unwanted material.

Patents under this class:

Patent Number Title Of Patent Date Issued
8636084 Auxiliary device and a system composed of an electrical work machine comprising an auxiliary device Jan. 28, 2014
8479354 Drill brush and vacuum attachment apparatus Jul. 9, 2013
8443914 Attachment device-equipped electric tool May. 21, 2013
8342782 Drilling tool with dust collector Jan. 1, 2013
7909114 Drilling device Mar. 22, 2011
7740086 Suction device for a pick power tool Jun. 22, 2010
7425109 Suctioning device for a machine tool Sep. 16, 2008
7419341 Machining mechanical parts with a hollow cylindrical tool Sep. 2, 2008
7371034 Drilling attachment May. 13, 2008
7354226 Hand-held power tool with a dust suction module Apr. 8, 2008
7322429 Portable drilling machine Jan. 29, 2008
7182150 Cordless hand held power tool with powered accessory Feb. 27, 2007
7017680 Hand held drilling and/or hammering tool with dust collection unit Mar. 28, 2006
6848749 Device for the removal of the surface layer of a wall or ceiling Feb. 1, 2005
6830113 Dust suppression guard Dec. 14, 2004
6732814 Rock drilling machine May. 11, 2004
6719072 Suction drill unit for dowel anchorage in rock Apr. 13, 2004
6712157 Portable power tool with rotation motor and grease lubricated angle drive Mar. 30, 2004
6615930 Suction module Sep. 9, 2003
6533047 Suction tool Mar. 18, 2003
5690183 Drill head unit Nov. 25, 1997
5492183 Drill head unit Feb. 20, 1996
5398414 Electrical hand saw Mar. 21, 1995
5330013 Drill head unit Jul. 19, 1994
5199501 Drilling or chiseling tool with suction apparatus Apr. 6, 1993
4790391 Air pressure impact drilling method and apparatus for same Dec. 13, 1988
4470469 Swivel head for drilling and mining tool Sep. 11, 1984
4416337 Drill head assembly Nov. 22, 1983
4298073 Drill head Nov. 3, 1981
4294317 Drillhead unit Oct. 13, 1981
4271916 System for adapting top head drilling rigs for reverse circulation drilling Jun. 9, 1981
4192390 Power tool Mar. 11, 1980
4190116 Mine roof bolter Feb. 26, 1980
4158520 Rock bolting apparatus Jun. 19, 1979

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