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Class Information
Number: 173/127
Name: Tool driving or impacting > Impacting devices (e.g., hammers) > Hammer head comprises plural parts or diverse materials > Piston of drive motor
Description: Apparatus in which the hammer head comprises or is rigidly connected to a mass of material forming an element which is received in a chamber, said element having surface which is acted upon by motive material in the chamber to cause the element to move and deliver a blow.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7527106 |
Method for operating the engine of fastening tool |
May. 5, 2009 |
| 7118507 |
Automatic reduction-ratio changing apparatus |
Oct. 10, 2006 |
| 6619407 |
Air-operated hammer |
Sep. 16, 2003 |
| 6224294 |
Tubular piling driving apparatus and piling installation method |
May. 1, 2001 |
| 6209659 |
Hand-held drill with a compressed air-operated hammer mechanism |
Apr. 3, 2001 |
| 6039231 |
Adjustable energy control valve for a fastener driving device |
Mar. 21, 2000 |
| 5231750 |
Fastener driving device with offset feed |
Aug. 3, 1993 |
| 5181450 |
Pneumatic fastener driving apparatus with piston holding detent |
Jan. 26, 1993 |
| 5000365 |
Adjustable piston-driver connection and method of adjusting |
Mar. 19, 1991 |
| 4669553 |
Percussion tool |
Jun. 2, 1987 |
| 4602689 |
Power tool |
Jul. 29, 1986 |
| 4530455 |
Piston and driver |
Jul. 23, 1985 |
| 4496007 |
Compressed-air pile-driver |
Jan. 29, 1985 |
| 4384623 |
Pneumatic fastener gun |
May. 24, 1983 |
| 4371042 |
Fluid operated ram |
Feb. 1, 1983 |
| 4367800 |
Subsea pile driver |
Jan. 11, 1983 |
| 4193459 |
Post-hole driver |
Mar. 18, 1980 |
| 4126191 |
Gas discharge type underwater hammer with liquid purge and reflood control |
Nov. 21, 1978 |
| 4122904 |
Pneumatic hammer driver |
Oct. 31, 1978 |
| 4100977 |
Drop hammers |
Jul. 18, 1978 |
| 4098355 |
Underwater hammer with circumferential flow seal |
Jul. 4, 1978 |
| 4056150 |
Ram device |
Nov. 1, 1977 |
| 4043405 |
Pile-driving arrangement |
Aug. 23, 1977 |
| 3965992 |
Internally silenced impact driven tools and impacting means therefor |
Jun. 29, 1976 |
| 3958647 |
Powerful submersible deepwater pile driver powered by pressurized gas discharge |
May. 25, 1976 |
| 3952813 |
Percussive device for driving holes in soil |
Apr. 27, 1976 |
| 3935908 |
Pile hammers |
Feb. 3, 1976 |
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