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GB1460556A - Impact tool for generating percussive forces - Google Patents

Impact tool for generating percussive forces

Info

Publication number
GB1460556A
GB1460556A GB1589375A GB1589375A GB1460556A GB 1460556 A GB1460556 A GB 1460556A GB 1589375 A GB1589375 A GB 1589375A GB 1589375 A GB1589375 A GB 1589375A GB 1460556 A GB1460556 A GB 1460556A
Authority
GB
United Kingdom
Prior art keywords
piston
accumulator
april
bore
space
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1589375A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HYDRACOUSTICS Inc
Original Assignee
HYDRACOUSTICS Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HYDRACOUSTICS Inc filed Critical HYDRACOUSTICS Inc
Publication of GB1460556A publication Critical patent/GB1460556A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/06—Means for driving the impulse member
    • B25D9/12—Means for driving the impulse member comprising a built-in liquid motor, i.e. the tool being driven by hydraulic pressure

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Earth Drilling (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)

Abstract

1460556 Impact tools HYDROACOUSTICS Inc 17 April 1975 [24 April 1974] 15893/75 Heading B4C A hydraulic pressure tool comprises a housing 300, a bore 308 therein and a piston 310 in the bore, the piston having faces 326, 328 the face 326 being the driving force and of larger area, a sliding valve mechanism 334 surrounding the piston and alternately covering a supply port 336 and return port 338, an accumulator 354 in the supply line connected through a chamber 352 to supply port 336 to store energy for the downward stroke of the piston. In use the passageway 352 is always connected to the space 332 below the piston to provide a restoring force and is alternately connected to the space 330 above piston 320 to provide the driving force. Valve means 340 is moved by rings 342, 344 on the piston rod. Return fluid passes through accumulator 366 which helps even out the flow thereof. A flushing medium channel is provided axially of the piston and drill bit.
GB1589375A 1974-04-24 1975-04-17 Impact tool for generating percussive forces Expired GB1460556A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US463625A US3903972A (en) 1974-04-24 1974-04-24 Impact tools

Publications (1)

Publication Number Publication Date
GB1460556A true GB1460556A (en) 1977-01-06

Family

ID=23840754

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1589375A Expired GB1460556A (en) 1974-04-24 1975-04-17 Impact tool for generating percussive forces

Country Status (9)

Country Link
US (1) US3903972A (en)
JP (1) JPS5432987B2 (en)
AU (1) AU476939B2 (en)
CA (1) CA1018864A (en)
DE (1) DE2518240C2 (en)
FR (1) FR2268573B1 (en)
GB (1) GB1460556A (en)
SE (1) SE405693B (en)
ZA (1) ZA752428B (en)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI56052C (en) * 1975-01-16 1979-11-12 Tampella Oy Ab HYDRAULISK BERGBORRMASKIN
US4265321A (en) * 1975-11-12 1981-05-05 Joy Manufacturing Company Rock drill
US4062411A (en) * 1975-12-05 1977-12-13 Gardner-Denver Company Hydraulic percussion tool with impact blow and frequency control
US4550785A (en) * 1976-04-28 1985-11-05 Consolidated Technologies Corporation Hammer
US4282937A (en) * 1976-04-28 1981-08-11 Joy Manufacturing Company Hammer
US4409368A (en) * 1981-07-13 1983-10-11 The General Tire & Rubber Company Preparation of star polymers
US4569412A (en) * 1982-05-26 1986-02-11 Hydroacoustics Inc. Seismic source
US4828048A (en) * 1986-11-10 1989-05-09 Mayer James R Hydraulic Percussion tool
US4858701A (en) * 1987-11-30 1989-08-22 Weyer Paul P Fluid-powered impact device and tool therefor
FR2657806B1 (en) * 1990-02-02 1992-05-22 Karagandin Politekhn HAND HYDRAULIC HAMMER.
SE504828C2 (en) * 1990-04-11 1997-05-12 Sandvik Ab Hammer device where piston and drill bit have reverse design relative to each other in terms of impedance
DK9400012U4 (en) * 1994-01-11 1995-04-28 Breakers As Hydraulically driven underground displacement device
US5680904A (en) * 1995-11-30 1997-10-28 Patterson; William N. In-the-hole percussion rock drill
SE509915C2 (en) * 1997-06-09 1999-03-22 Atlas Copco Tools Ab Hydraulic torque pulse generator
KR100260308B1 (en) * 1997-06-11 2000-07-01 최해성 Hydraulic hammer having improved seal ring
FI106618B (en) * 1998-03-30 2001-03-15 Sandvik Tamrock Oy Arrangement in connection with a pressurized-impact device such as a breaking device
US6464023B2 (en) 1999-01-27 2002-10-15 William N. Patterson Hydraulic in-the-hole percussion rock drill
US6155361A (en) * 1999-01-27 2000-12-05 Patterson; William N. Hydraulic in-the-hole percussion rock drill
CA2295463C (en) 1999-01-27 2008-04-29 William N. Patterson Hydraulic in-the-hole percussion rock drill
ES2293382T3 (en) 2003-12-19 2008-03-16 Clark Equipment Company IMPACT TOOL.
SE526992C2 (en) * 2004-03-12 2005-12-06 Atlas Copco Constr Tools Ab Hydraulic pressure accumulator
WO2008095073A2 (en) * 2007-02-01 2008-08-07 J.H. Fletcher & Co. Fail-resistant hammer assembly for a valveless percussive drill
US7681664B2 (en) * 2008-03-06 2010-03-23 Patterson William N Internally dampened percussion rock drill
KR200466458Y1 (en) * 2009-11-11 2013-04-18 주식회사수산중공업 A Solve Device for Accumulator abnormal pressure of Constrbattinguction Machine
SE535149C2 (en) * 2010-08-31 2012-05-02 Atlas Copco Rock Drills Ab Hydraulic percussion for use in rock or concrete cutting equipment
US8474363B2 (en) 2011-07-03 2013-07-02 Vincent M. Kelly Axial piston and valve shaft fluid engine
SE536382C2 (en) * 2012-02-17 2013-10-01 Atlas Copco Constr Tools Ab Pressure accumulator & impact device
DE102012013409A1 (en) * 2012-05-23 2013-11-28 Atlas Copco Construction Tools Gmbh impact device
NO20150341A1 (en) * 2015-03-18 2016-06-20 Resonator As Percussive hammering assembly
WO2021062483A1 (en) * 2019-10-03 2021-04-08 Warren Strange Liquid hammer drill
CN110984843B (en) * 2019-12-29 2021-09-10 东台市高科技术创业园有限公司 Hydraulic percussion drill power device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2749886A (en) * 1954-06-07 1956-06-12 Richard M Densmore Fluid pressure self-reciprocating actuator
DE1281370B (en) * 1963-09-06 1968-10-24 Krupp Gmbh Impact device with hydraulically reciprocating pistons
DE1230386B (en) * 1964-11-19 1966-12-15 Salzgitter Maschinen Ag Hydraulic hammer
FR1431835A (en) * 1965-01-28 1966-03-18 Montabert Ets Percussion device
DE6602835U (en) * 1965-10-11 1969-07-03 Heinz Callsen PRESSURIZED IMPACT DEVICE
GB1159465A (en) * 1966-07-06 1969-07-23 Hugo Cordes Control for a Ramming Hammer with Hydraulic Drive

Also Published As

Publication number Publication date
SE7504440L (en) 1975-10-27
ZA752428B (en) 1976-03-31
JPS5432987B2 (en) 1979-10-17
JPS50148202A (en) 1975-11-27
AU8024575A (en) 1976-10-07
US3903972A (en) 1975-09-09
CA1018864A (en) 1977-10-11
FR2268573B1 (en) 1980-10-17
AU476939B2 (en) 1976-10-07
DE2518240C2 (en) 1985-09-05
SE405693B (en) 1978-12-27
FR2268573A1 (en) 1975-11-21
DE2518240A1 (en) 1975-11-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee