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Class Information
Number: 173/118
Name: Tool driving or impacting > Impacting devices (e.g., hammers) > Spring bodily cyclically moved with hammer head
Description: Apparatus in which a resilient member is arranged to transmit force to a hammer head, and said member moves in entirety during each stroke of the hammer head.










Patents under this class:

Patent Number Title Of Patent Date Issued
8061437 Nail gun with rapidly attachable and detachable magazine assembly Nov. 22, 2011
8011443 Striking mechanism for a handheld power tool Sep. 6, 2011
7922059 Hand-held drive-in power tool Apr. 12, 2011
7503400 Two shot power nailer Mar. 17, 2009
6997269 Attachment for impact hammer Feb. 14, 2006
6966390 Pile hammer Nov. 22, 2005
6938704 Pneumatic percussive tool with a movement frequency controlled idling position Sep. 6, 2005
6698531 Vibration tamper Mar. 2, 2004
6119796 Pneumatic spring percussion mechanism with an air supply Sep. 19, 2000
5813479 Trigger mechanism for impacting device Sep. 29, 1998
5662177 Trigger mechanism for impacting device Sep. 2, 1997
5125462 Quick-change ram boring head Jun. 30, 1992
5097912 Staking system for concrete forms Mar. 24, 1992
5052498 Portable hammer machine Oct. 1, 1991
4609054 Anti-noise impact element Sep. 2, 1986
4557336 Alignment mechanism for ram type compactors Dec. 10, 1985
4436163 Arrangement for converting rotary motion to reciprocatory motion Mar. 13, 1984
4428439 Adjustable, portable, hand-held impactor Jan. 31, 1984
4366869 Hammer drill Jan. 4, 1983
4346767 Rotary impact drill Aug. 31, 1982
4346768 Impact device with sinusoidal rotary-to-reciprocative converter Aug. 31, 1982
4346769 Percussive tool drive linkage Aug. 31, 1982
4336847 Percussion drill Jun. 29, 1982
4325436 Hammer drill or chipping hammer device Apr. 20, 1982
4310055 Percussion hammer with a one piece striker Jan. 12, 1982
4290492 Idling and air replenishing system for a reciprocating hammer mechanism Sep. 22, 1981
4276941 Hand-held power tool Jul. 7, 1981
4201269 Impact device with linear single acting air spring May. 6, 1980
4183414 Percussion tool and cartridge-type oil tank therefor Jan. 15, 1980
4166507 Percussive drilling apparatus Sep. 4, 1979
4156468 Housing for electric tools May. 29, 1979
4114699 Pneumatic rotary hammer device Sep. 19, 1978
4102410 Resilient work-coupled impact device Jul. 25, 1978
4099580 Impact device with linear air spring Jul. 11, 1978
4095654 Impact device with multiple connecting rods and gearing Jun. 20, 1978
4015909 Tamping machine Apr. 5, 1977
4014392 Stabilized piston-cylinder impact device Mar. 29, 1977
3973633 Hammer device Aug. 10, 1976











 
 
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