A percussion mechanism that has a motor, a drive piston which can be moved to and fro in a guide cylinder by the motor, and a percussion piston. A coupling device is active between the drive piston and the percussion piston, via which coupling device the movement of the drive piston is transmitted to the percussion …

Legal parties

Inventors (applicants): Helmut Braun, Rudolf Berger
Assignees (initial): Wacker Neuson Produktion GmbH & Co. KG (Munich, DE)
Agents: Boyle Fredrickson, S.C. (attorney)

The application was examined by Nathaniel Chukwurah, Alexandra Elve (USPTO dept. 3721)


  • 1. A percussion mechanism, comprising: …
  • 2. The percussion mechanism as recited in claim 1 , wherein the algorithm determines a fixed …
  • 3. The percussion mechanism as recited in claim 1 , said motor being controllable in a such …

International priority data

DE: 10 2008 035 298 / Jul. 29, 2008 (national)

Cited documents


  • SU 1138310 A, Feb. 1, 1985
  • DE 102005030340 B3, Jan. 1, 2007
  • DE 102005010737 A1, Sep. 1, 2006
  • EP 1607186 A1, Dec. 1, 2005
  • DE 498728, May. 1, 1930
  • Bongers-Ambrosius et al. US 2002/0056558 A1 / 173/201, May. 1, 2002
  • Dresig et al. US 2005/0072584 A1 / 173/1, Apr. 1, 2005
  • DE 102006059076 A1, Jun. 1, 2008
  • EP 1 607 186 A1, Jun. 1, 2004
  • DE 3311423 A1, Oct. 1, 1984


Brief Description of the Drawings

FIG. 1 is a schematic illustration of a percussion mechanism according to the invention; FIG. 2 shows the movement pattern of the drive piston and the percussion piston of a conventional …


Background of the Invention

1. Field of the Invention The invention relates to a percussion mechanism used as a breaker, rock-drilling hack, and/or a percussion hammer and, more particularly, relates to a percussion mechanism …

Detailed Description of the Preferred Embodiment

FIG. 1 is a schematic side view of a percussion mechanism with a motor 1 encompassing a stator 2, a rotor 3, and an electronic control 4. The motor is a reluctance-type …

More details about Pneumatic-Spring Percussion Mechanism With a Variable Rotary Drive

Miscellaneous patent data

The exemplary patent drawings are Pneumatic-Spring Percussion Mechanism With a Variable, Schematic illustration of a percussion, different movement patterns of the drive, movement pattern of the drive, numbered 13/056,148 (application), the patent grant was extended by 207 days, the assignee classification - a foreign company or corporation, categorized under Pulsation caused by mechanical movement as a primary classification, the known applicant's name is Berger Rudolf, similar classification categories are Supplied through distributor maintained in fixed position, Trolleys, Tool advanced laterally of structure, Picks, Handles, Handle mountings, Adjustable to impacting device, Safety devices, Drive Gearing Advances Relative to Source or Power, comprising a built-in liquid motor, Reciprocatory drive and advance originate from same mechanical element, the known agent's company is Boyle Fredrickson, S.C., claims 1-15 comprise the invention scope, the claim number 1 is selected as exemplary, the grant publication number is 08534376, the patent particularly claims a percussion mechanism, comprising…, the known inventor's name is Rudolf Berger, invented by Rudolf Berger et al., the patent was granted on Sep. 17, 2013, the invention is titled Pneumatic-Spring Percussion Mechanism With a Variable Rotary Drive, the assignee organization is Wacker Neuson Produktion GmbH & Co. KG, located in Munich (DE), explained by 8 figures, the application publication date is Jul. 28, 2009, was examined by Alexandra Elve, the main examiner, Nathaniel Chukwurah, the assistant (3721 USPTO department), the invention description is illustrated by 6 drawings.

Invention classification information

The invention is classified under Control devices for the reciprocating piston, With means to reciprocate tool, Pulsation caused by mechanical movement. The designated search classifications include Pulsation caused by mechanical movement, Processes, Automatic Control of Power Operated Means, With means to reciprocate tool, Hammer head driven by electric motor.

Patent details
Publication number 08534376
Publication date Sep. 17, 2013
Kind code B2
Application number 13/056,148
Application date Jul. 28, 2009
Application type U
Application series code 13
Int. pub. country WO
Int. pub. number WO2010/012453
Int. publication Feb. 4, 2010
Int. filing country WO
Int. filing PCT/EP2009/005468
Filed internationally Jul. 28, 2009
National stage date Jan. 27, 2011
Extension term 207
National classification 173/201
Total number of claims 15
Exemplary claims 1
Number of drawings 6
Number of figures 8
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