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Class Information
Number: 173/126
Name: Tool driving or impacting > Impacting devices (e.g., hammers) > Hammer head comprises plural parts or diverse materials
Description: Apparatus in which the hammer head is composed of (1) at least two separate elements or (2) at least two separate materials.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7527106 |
Method for operating the engine of fastening tool |
May. 5, 2009 |
| 7182149 |
Pneumatic wrench having reinforced strength |
Feb. 27, 2007 |
| 7089694 |
Sign post assembly and method for the same |
Aug. 15, 2006 |
| 6029753 |
Increased efficiency percussion piston and method for operating same |
Feb. 29, 2000 |
| 5931243 |
Hammer device |
Aug. 3, 1999 |
| 5803188 |
Hydraulically driven percussion hammer |
Sep. 8, 1998 |
| 5727639 |
Pile driving hammer improvement |
Mar. 17, 1998 |
| 5662179 |
Hole-making device |
Sep. 2, 1997 |
| 5556649 |
Device for removing runners from molded products |
Sep. 17, 1996 |
| 5542479 |
Hand operated impact tool |
Aug. 6, 1996 |
| 5511626 |
Hydraulically operated subsoil displacement apparatus |
Apr. 30, 1996 |
| 5337837 |
Dual-diameter pneumatic ground piercing tool |
Aug. 16, 1994 |
| 5117920 |
Pole driver |
Jun. 2, 1992 |
| 5086849 |
Apparatus useful in driving electrical ground rods |
Feb. 11, 1992 |
| 5038874 |
Drill bit having a flushing medium channel |
Aug. 13, 1991 |
| 5029651 |
Post driver |
Jul. 9, 1991 |
| 4813494 |
Stake driver |
Mar. 21, 1989 |
| 4751970 |
Angular attachment for transmitting and deviating output power of a machine |
Jun. 21, 1988 |
| 4610188 |
Magnetic driving tool |
Sep. 9, 1986 |
| 4569402 |
Method of controlling impact force and shock interval in drop hammers |
Feb. 11, 1986 |
| 4558747 |
Impact devices |
Dec. 17, 1985 |
| 4462468 |
Ram head for self-driven pneumatic ram drills |
Jul. 31, 1984 |
| 4448264 |
Ground rod driving pole |
May. 15, 1984 |
| 4427078 |
Pile-driving ram |
Jan. 24, 1984 |
| 4413686 |
Wedge arrangement for locking together hammerhead and anvil |
Nov. 8, 1983 |
| 4350214 |
Ram block |
Sep. 21, 1982 |
| 4335622 |
Soil gas probe |
Jun. 22, 1982 |
| 4293045 |
Impacting device |
Oct. 6, 1981 |
| 4253706 |
Magnetic breaker bar |
Mar. 3, 1981 |
| 4252472 |
Fixing posts in the ground |
Feb. 24, 1981 |
| 4226287 |
Apparatus for pile driver cushion recoil |
Oct. 7, 1980 |
| 4132108 |
Ram assembly for electromagnetic high energy impact apparatus |
Jan. 2, 1979 |
| 4124090 |
Bounceless seismic wave generator |
Nov. 7, 1978 |
| 4106298 |
Device for the production of earth holes |
Aug. 15, 1978 |
| 4094364 |
Percussion drill rod |
Jun. 13, 1978 |
| 3939922 |
Hydraulic hammer assembly |
Feb. 24, 1976 |
| 3934656 |
Automatic hydraulic hammer |
Jan. 27, 1976 |
| 3934655 |
Hydraulic post setting and wire dispensing apparatus |
Jan. 27, 1976 |
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