US Patent No: 5,806,609

Number of patents in Portfolio can not be more than 2000

Manually operable tool for drilling and/or removing material in brittle and/or low ductile material

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Importance

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Abstract

A manually operable tool, such as a hammer drill, for drilling and/or removing material in at least one of brittle material and low ductile material, has a continuously rotatable chuck (8) and a motor driven striking mechanism (1) for transmitting impulse-like blows to a tool bit (9) held in the chuck (8). The tool includes members (5) for transmitting impulse-like blows composed of superimposed axially-directed blows and torsional blows to the tool bit (9) in the chuck for forming drilling blows. Further, an adaptor can be provided for attachment to the hammer drill containing the members (5) for affording the superimposed blows.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
HILTI AKTIENGESELLSCHAFTSCHAAN1258

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bongers-Ambrosius, Hans-Werner Laupheim, DE 43 278
Kaibach, Werner Buchloe, DE 17 73
Ludwig, Ralf Sennwald, CH 15 137
Schad, Hanspeter Grabs, CH 16 156
Schulz, Reinhard Staufen-Wettelbrunn, DE 32 222
Schweizer, Edwin Balzers, LI 8 97
Stock, Maximilian Azmoos, CH 10 124

Cited Art

Patent Info (Count) # Cites Year
 
ROBERT BOSCH GMBH (2)
4,567,951 Hammer drill 32 1983
5,277,259 Hammer drill with hammer drive action coupling 17 1991
 
BLACK & DECKER INC. (1)
4,895,212 Rotary hammer 37 1989

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
HILTI AKTIENGESELLSCHAFT (3)
6,196,330 Manually operable drilling tool with dual impacting function 12 1999
6,902,012 Percussion electrical hand-held tool 6 2001
6,799,644 Pneumatic percussive mechanism 1 2003
 
BLACK & DECKER INC. (2)
7,398,835 Rotary hammer having both a reciprocating hammer mechanism and a ratcheting hammer mechanism 5 2006
7,398,834 Hammer drill with selective lock-on 4 2006
 
ROBERT BOSCH GMBH (2)
6,843,327 Manual machine tool 15 2003
8,096,369 Striking mechanism for a handheld electric power tool 0 2007
 
MAKITA CORPORATION (1)
7,059,425 Reciprocating power tool 2 2004
 
PERF-O-LOG, INC. (1)
6,796,191 Torque swivel and method of using same 1 2003
 
POWERNAIL CO. (1)
8,186,554 Tapered guide bushing for reciprocating driver and tool incorporating same 0 2009
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (2)
7,096,972 Hammer drill attachment 3 2002
D555682 Tool for driving a ground rod 1 2006