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Class Information
Number: 173/133
Name: Tool driving or impacting > Impacting devices (e.g., hammers) > Impact transmitting anvil > Anvil retained for limited movement
Description: Apparatus in which the impact transmitting mass of material is arranged relative to the tool in such a manner as to permit relative movement between said mass and said tool.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8672052 Demolition hammer with reversible housing and interchangeable wear plate arrangement Mar. 18, 2014
8657028 Impact hammer Feb. 25, 2014
8486084 Surgical slap hammer Jul. 16, 2013
8272453 Handheld power tool Sep. 25, 2012
8230940 Method for driving a support into a ground surface by means of a pile-driving device, and a pile-driving device for use with such a method Jul. 31, 2012
8122793 Tool for aligning wind turbine tower fasteners Feb. 28, 2012
7712554 Percussive drill bit provided with an improved chuck assembly May. 11, 2010
7665548 Secondary retainer for a downhole hammer bit Feb. 23, 2010
7343989 Secondary retainer for a downhole hammer bit Mar. 18, 2008
7284622 Tool holder for hammer Oct. 23, 2007
7207633 Scaling assembly Apr. 24, 2007
7143840 Impact tool Dec. 5, 2006
7013986 Impact tool Mar. 21, 2006
6789632 Rock drilling apparatus Sep. 14, 2004
6745850 Tool holder for hammer Jun. 8, 2004
6732814 Rock drilling machine May. 11, 2004
6467321 Device for ultrasonic peening of metals Oct. 22, 2002
6328116 Arrangement in connection with a hydraulic breaking apparatus Dec. 11, 2001
6056070 Hydraulic ramming apparatus May. 2, 2000
5996708 Percussion tool Dec. 7, 1999
5871059 Mechanism for preventing idling strikes in power-driven striking tools Feb. 16, 1999
5735358 Indexing percussive drilling bit Apr. 7, 1998
5350025 Nonrotary piston for jackhammer and removable splined nut therefor Sep. 27, 1994
5279371 Down-the-hole drilling machine Jan. 18, 1994
5226487 Pneumopercussive machine Jul. 13, 1993
5161624 Tool for driving fastening elements into hard receiving materials Nov. 10, 1992
5125462 Quick-change ram boring head Jun. 30, 1992
5095998 Ram boring machine Mar. 17, 1992
5090487 Drill head with integral impact hammers Feb. 25, 1992
5050687 Compression-vacuum action percussive machine Sep. 24, 1991
5031706 Pneumopercussive soil penetrating machine Jul. 16, 1991
4938297 Ram boring machine Jul. 3, 1990
4930584 Cracking device Jun. 5, 1990
4906049 Ripper using a hydraulic hammer and a method for making the improvement Mar. 6, 1990
4886128 Ram boring implement having a movable bit Dec. 12, 1989
4884642 Percussive action machine Dec. 5, 1989
4860835 Diesel type pile-driver Aug. 29, 1989
4815193 Rivet installation tool and method of installing rivets Mar. 28, 1989
4690226 Hammer drill Sep. 1, 1987
4669553 Percussion tool Jun. 2, 1987
4646852 Pneumatic mallet Mar. 3, 1987
4632190 Pneumatically-operated multi-needle chisel tool Dec. 30, 1986
4624325 Apparatus for dampening the recoil of percussion tools Nov. 25, 1986
4619460 Hammer-drill chuck Oct. 28, 1986
4614241 Impact tool assembly with bit isolating means Sep. 30, 1986
4545440 Attachment for pneumatic hammers for punching holes of varying size Oct. 8, 1985
4523647 Power hammer Jun. 18, 1985
4512692 Tool shaft for a tool of the percussive and rotative type Apr. 23, 1985
4491445 Tool holder for hammer drills Jan. 1, 1985
4476941 Motor-driven hand-held percussion tool Oct. 16, 1984

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