having a tubular-slide valve, which is coaxial with the piston

Patents Grantslast 30 patents

  • Information Patent Grant

    Two-piston hydraulic striking device

    • Patent number 11,072,977
    • Issue date Jul 27, 2021
    • Furukawa Rock Drill Co., Ltd.
    • Masahiro Koizumi
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Hydraulic hammer having co-axial accumulator and piston

    • Patent number 10,562,166
    • Issue date Feb 18, 2020
    • Caterpillar Inc.
    • Cody Moore
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Hydraulic hammering device

    • Patent number 10,493,610
    • Issue date Dec 3, 2019
    • Furukawa Rock Drill Co., Ltd.
    • Masahiro Koizumi
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Hydraulic hammer having impact system subassembly

    • Patent number 9,592,598
    • Issue date Mar 14, 2017
    • Caterpillar Inc.
    • Cody Moore
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Hydraulic hammer having co-axial accumulator and piston

    • Patent number 9,555,531
    • Issue date Jan 31, 2017
    • Caterpillar Inc.
    • Cody Moore
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Percussion device

    • Patent number 9,108,311
    • Issue date Aug 18, 2015
    • Sandvik Mining and Construction Oy
    • Markku Keskiniva
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Hydraulic pick

    • Patent number 8,789,617
    • Issue date Jul 29, 2014
    • KONEK s.r.o.
    • Stefan Konecník
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Pressurised air pick device with variable control

    • Patent number 8,720,601
    • Issue date May 13, 2014
    • Sullair, LLC
    • Alain Mucig
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Rock drilling machine and axial bearing

    • Patent number 7,419,015
    • Issue date Sep 2, 2008
    • Sandvik Mining and Construction Oy
    • Timo Muuttonen
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Impact device with a rotable control valve

    • Patent number 7,290,622
    • Issue date Nov 6, 2007
    • Sandvik Mining and Construction Oy
    • Markku Keskiniva
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Control valve and a method for a percussion device with a working c...

    • Patent number 7,178,447
    • Issue date Feb 20, 2007
    • Sandvik Tamrock Oy
    • Antti Koskimäki
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Control valve in a percussion device and a method comprising a clos...

    • Patent number 7,174,824
    • Issue date Feb 13, 2007
    • Sahdvik Tamrock Oy
    • Antti Koskimäki
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Impact tool

    • Patent number 7,156,190
    • Issue date Jan 2, 2007
    • Clark Equipment Company
    • Jack B. Ottestad
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Steel retainer for rock drill

    • Patent number 7,044,479
    • Issue date May 16, 2006
    • Paul B. Campbell, Jr.
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Information Patent Grant

    Pneumatic tool

    • Patent number 6,161,628
    • Issue date Dec 19, 2000
    • Q.C. Witness Int. Co., Ltd.
    • I-Yueh Liu
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Rock drill percussion mechanism

    • Patent number 5,794,717
    • Issue date Aug 18, 1998
    • Roger Robarts Briggs
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Single-stroke pneumatic apparatus

    • Patent number 4,947,941
    • Issue date Aug 14, 1990
    • Institut Gornogo Dela Sibirskogo Otdelenlja Akademii Nauk SSSR
    • Vadim B. Sudnishnikov
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Single-blow pneumatic percussive tool

    • Patent number 4,862,972
    • Issue date Sep 5, 1989
    • Vadim B. Sudinshnikov
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Single-blow pneumatic percussive tool

    • Patent number 4,850,437
    • Issue date Jul 25, 1989
    • Vadim B. Sudnishnikov
    • B44 - DECORATIVE ARTS
  • Information Patent Grant

    Percussion tool utilizing negative pressure

    • Patent number 4,741,404
    • Issue date May 3, 1988
    • Landmark West Ltd.
    • Nobuo Oyama
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Hydraulic impact tool

    • Patent number 4,724,911
    • Issue date Feb 16, 1988
    • Enmark Corporation
    • Robert J. Buske
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Method of driving an element and an hydraulic impactor

    • Patent number 4,667,748
    • Issue date May 26, 1987
    • Atlas Copco Aktiebolag
    • Erik V. Lavon
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Pneumatic impact tool

    • Patent number 4,651,833
    • Issue date Mar 24, 1987
    • Emil Schenker AG
    • Kurt Karpf
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    Hydraulically operated impacting device

    • Patent number 4,635,531
    • Issue date Jan 13, 1987
    • Mannesmann AG
    • Wilhelm Rode
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Pressure fluid operated percussive tool

    • Patent number 4,563,938
    • Issue date Jan 14, 1986
    • Atlas Copco Aktiebolag
    • Stig R. Henriksson
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Actuator for a hydraulic impact device

    • Patent number 4,479,551
    • Issue date Oct 30, 1984
    • Hughes Tool Company
    • Edgar J. Justus
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Hydraulic demolishing rock drill

    • Patent number 4,474,248
    • Issue date Oct 2, 1984
    • Donadio; Giovanni
    • Mario Musso
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Liquid pressure striking device

    • Patent number 4,444,274
    • Issue date Apr 24, 1984
    • Maruzen Kogyo Company Limited
    • Isaku Suwabe
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Hydraulic impact device

    • Patent number 4,231,434
    • Issue date Nov 4, 1980
    • Edgar J. Justus
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Grant

    Hydraulic percussion apparatus

    • Patent number 4,165,788
    • Issue date Aug 28, 1979
    • Roger Montabert
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS

Patents Applicationslast 30 patents

  • Information Patent Application

    HYDRAULIC HAMMER HAVING CO-AXIAL ACCUMULATOR AND PISTON

    • Publication number 20170087704
    • Publication date Mar 30, 2017
    • Caterpillar Inc.
    • Cody Moore
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    HYDRAULIC HAMMERING DEVICE

    • Publication number 20170001294
    • Publication date Jan 5, 2017
    • Furukawa Rock Drill Co., Ltd.
    • Masahiro KOIZMUI
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    HYDRAULIC HAMMER HAVING IMPACT SYSTEM SUBASSEMBLY

    • Publication number 20140262407
    • Publication date Sep 18, 2014
    • Caterpillar Inc.
    • Cody Moore
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    HYDRAULIC HAMMER HAVING CO-AXIAL ACCUMULATOR AND PISTON

    • Publication number 20140262406
    • Publication date Sep 18, 2014
    • Caterpillar Inc.
    • Cody Moore
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    PERCUSSION DEVICE

    • Publication number 20120018182
    • Publication date Jan 26, 2012
    • SANDVIK MINING AND CONSTRUCTION OY
    • Markku Keskiniva
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    PRESSURISED AIR PICK DEVICE WITH VARIABLE CONTROL

    • Publication number 20110174512
    • Publication date Jul 21, 2011
    • Alain Mucig
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Hydraulic pick

    • Publication number 20100193212
    • Publication date Aug 5, 2010
    • Konek, s.r.o.
    • Stefan Konecník
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Rock drilling machine and axial bearing

    • Publication number 20060213690
    • Publication date Sep 28, 2006
    • Sandvik Tamrock OY
    • Timo Muuttonen
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Control valve in a percussion device and a method comprising a clos...

    • Publication number 20060175091
    • Publication date Aug 10, 2006
    • Antti Koskimaki
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Control valve and a method for a percussion device with a working c...

    • Publication number 20060169468
    • Publication date Aug 3, 2006
    • Antti Koskimaki
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Impact device with a rotable control valve

    • Publication number 20060032649
    • Publication date Feb 16, 2006
    • Markku Keskiniva
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    Impact tool

    • Publication number 20050145400
    • Publication date Jul 7, 2005
    • Clark Equipment Company
    • Jack B. Ottestad
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Valve for hydraulic rock drill

    • Publication number 20030006052
    • Publication date Jan 9, 2003
    • Paul B. Campbell
    • B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
  • Information Patent Application

    Steel retainer for rock drill

    • Publication number 20020195779
    • Publication date Dec 26, 2002
    • Paul B. Campbell
    • Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC