US3010431A - Percussion tools - Google Patents

Percussion tools Download PDF

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Publication number
US3010431A
US3010431A US550A US55060A US3010431A US 3010431 A US3010431 A US 3010431A US 550 A US550 A US 550A US 55060 A US55060 A US 55060A US 3010431 A US3010431 A US 3010431A
Authority
US
United States
Prior art keywords
housing
tool
chamber
valve
piston
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 - Lifetime
Application number
US550A
Other languages
English (en)
Inventor
Holdo Jan Kristian
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.)
Atlas Copco AB
Original Assignee
Atlas Copco AB
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 Atlas Copco AB filed Critical Atlas Copco AB
Priority to US550A priority Critical patent/US3010431A/en
Priority to ES0263723A priority patent/ES263723A1/es
Priority to GB4671/64A priority patent/GB974930A/en
Priority to GB224/61A priority patent/GB957204A/en
Priority to CH8261A priority patent/CH398467A/de
Priority to BE598809A priority patent/BE598809A/fr
Application granted granted Critical
Publication of US3010431A publication Critical patent/US3010431A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B25D9/08—Means for driving the impulse member comprising a built-in air compressor, i.e. the tool being driven by air pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/24—Damping the reaction force
    • B25D17/245—Damping the reaction force using a fluid
    • 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

Definitions

  • the invention is particularly directed to portable percussion tools such as paving breakers, hammers, riveters, rock drills and the like but the invention may also be used in pile drivers, sheeting drivers or the like.
  • piston in tools according to the invention may be operated pneumatically or hydraulically or by other pressure fluids as the case may be.
  • a disadvantage of percussion tools is the vibrations or shocks transmitted to the handles or other members serving to feed or to carry the tool towards a work piece during operation of the tool.
  • One object of the invention is to minimize or eliminate said shock and vibration transmission.
  • a further object of the invention is to provide a simple, economical and efiicient percussion tool in which the transmission of vibrations or shocks from the tool to the handle or handles or other feeding means is materially reduced.
  • FIG. 3 is a longitudinal section through the cylinder axis of the same tool on a plane at 45 to the section planes of FIGS. 1 and 2.
  • FIG. 4 is a transverse section on line IVIV of FIG. 3.
  • FIG. 4 also illustrates the planes II, IIII and IIIIII on which the longitudinal sections of FIGS. 1 to 3, respectively, are taken.
  • FIGS. 5 and 6 are longitudinal sec tions of a modification of the tool in FIGS. 1-4.
  • FIG. 7 is a cross section on line VIIVH of FIG. 6.
  • hammer piston reciprocable in said working cylinder member and said housing, means operative to effect pneumatic control of said first mentioned means for automatically adjusting the value of said force to maintain said member relative to said housing in a substantially predetermined mean position -and for maintaining such adjusted value relatively constant over a considerable number of successive reciprocations of said hammer piston, means in the housing for supplying pressure fluid to the working cylinder, distributing valve means in the housing controlling pressure fluid supply to working chambers in the working cylinder for producing a rapid working stroke and a relatively slow return stroke and including a distributing valve member, passages in said distributing valve means for venting the main portion of the compressed air cushions produced by the hammer piston during the working stroke and the return stroke, respec: tively, and further passages in the distributing valve means for supplying pressure fluid for moving said distributing valve member to positions for admitting pressure fluid to said working chambers, respectively.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Percussive Tools And Related Accessories (AREA)
US550A 1960-01-05 1960-01-05 Percussion tools Expired - Lifetime US3010431A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US550A US3010431A (en) 1960-01-05 1960-01-05 Percussion tools
ES0263723A ES263723A1 (es) 1960-01-05 1961-01-02 Perfeccionamientos en utiles de percusiën
GB4671/64A GB974930A (en) 1960-01-05 1961-01-02 Improvements in percussion tools
GB224/61A GB957204A (en) 1960-01-05 1961-01-03 Improvements in percussion tools
CH8261A CH398467A (de) 1960-01-05 1961-01-04 Schlagwerkzeug
BE598809A BE598809A (fr) 1960-01-05 1961-01-04 Perfectionnements aux outils travaillant par percussion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US550A US3010431A (en) 1960-01-05 1960-01-05 Percussion tools

Publications (1)

Publication Number Publication Date
US3010431A true US3010431A (en) 1961-11-28

Family

ID=21691992

Family Applications (1)

Application Number Title Priority Date Filing Date
US550A Expired - Lifetime US3010431A (en) 1960-01-05 1960-01-05 Percussion tools

Country Status (5)

Country Link
US (1) US3010431A (fr)
BE (1) BE598809A (fr)
CH (1) CH398467A (fr)
ES (1) ES263723A1 (fr)
GB (2) GB974930A (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200893A (en) * 1962-04-09 1965-08-17 Leavell Charles Vibration elimination
US3223181A (en) * 1962-03-27 1965-12-14 Vernon L Price Vibrationless air hammer assembly
US3306172A (en) * 1964-07-13 1967-02-28 Atlas Copco Ab Means for transmitting force between an oscillating and a desirably steady member of an apparatus
US3451492A (en) * 1966-11-29 1969-06-24 Atlas Copco Ab Recoil vibration damped percussive machine
US4036085A (en) * 1975-02-18 1977-07-19 Atlas Copco Aktiebolag Handle structure for percussive tools
US4308926A (en) * 1979-05-15 1982-01-05 Etablissements Montabert S.A. Pneumatically cushioned percussion apparatus
US4388972A (en) * 1980-04-25 1983-06-21 Atlas Copco Aktiebolag Vibrationless impact tool
US5330202A (en) * 1992-10-08 1994-07-19 Ingersoll-Rand Company Tool retainer for a percussive, fluid-activated apparatus
US20060185868A1 (en) * 2005-02-24 2006-08-24 Reimund Becht Handle assembly for hammer apparatus
EP1674209A3 (fr) * 2004-12-24 2009-08-12 J.C. Bamford Excavators Limited Outil de percussion à moteur
GB2548579A (en) * 2016-03-21 2017-09-27 Webster Tech Ltd Power tool
US10967495B2 (en) 2017-07-21 2021-04-06 Webster Technologies Limited Power tool

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3122979A1 (de) * 1981-06-10 1983-01-05 Hilti AG, 9494 Schaan Bohr- oder meisselhammer
CH664730A5 (de) * 1983-07-21 1988-03-31 Sig Schweiz Industrieges Verfahren und vorrichtung zur daempfung des rueckpralles bei schlagwerkzeugen.
GB2234464A (en) * 1989-08-02 1991-02-06 Thor Tools Limited Percussive tool

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1221615A (en) * 1916-04-12 1917-04-03 William Culross Simpson Jr Shock-absorber for pneumatic tools.
US1792888A (en) * 1928-04-05 1931-02-17 Chicago Pneumatic Tool Co Portable percussive tool
US1924234A (en) * 1931-06-25 1933-08-29 Messr Ehrenreich & Cie Pneumatic cushion device
US2061806A (en) * 1934-02-28 1936-11-24 Sullivan Machinery Co Shock absorbing device
US2400650A (en) * 1941-09-02 1946-05-21 Mechanical Res Corp Vibration apparatus
US2679826A (en) * 1948-08-09 1954-06-01 Mechanical Res Corp Pneumatic tool
US2730073A (en) * 1953-06-23 1956-01-10 Mechanical Res Corp Percussion tools
US2748750A (en) * 1953-01-13 1956-06-05 Armour Res Found Vibrationless pneumatic impact tool

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1221615A (en) * 1916-04-12 1917-04-03 William Culross Simpson Jr Shock-absorber for pneumatic tools.
US1792888A (en) * 1928-04-05 1931-02-17 Chicago Pneumatic Tool Co Portable percussive tool
US1924234A (en) * 1931-06-25 1933-08-29 Messr Ehrenreich & Cie Pneumatic cushion device
US2061806A (en) * 1934-02-28 1936-11-24 Sullivan Machinery Co Shock absorbing device
US2400650A (en) * 1941-09-02 1946-05-21 Mechanical Res Corp Vibration apparatus
US2679826A (en) * 1948-08-09 1954-06-01 Mechanical Res Corp Pneumatic tool
US2748750A (en) * 1953-01-13 1956-06-05 Armour Res Found Vibrationless pneumatic impact tool
US2730073A (en) * 1953-06-23 1956-01-10 Mechanical Res Corp Percussion tools

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3223181A (en) * 1962-03-27 1965-12-14 Vernon L Price Vibrationless air hammer assembly
US3200893A (en) * 1962-04-09 1965-08-17 Leavell Charles Vibration elimination
US3306172A (en) * 1964-07-13 1967-02-28 Atlas Copco Ab Means for transmitting force between an oscillating and a desirably steady member of an apparatus
DE1288526B (de) * 1964-07-13 1969-01-30 Atlas Copco Ab Schlagwerkzeug
US3451492A (en) * 1966-11-29 1969-06-24 Atlas Copco Ab Recoil vibration damped percussive machine
US4036085A (en) * 1975-02-18 1977-07-19 Atlas Copco Aktiebolag Handle structure for percussive tools
US4308926A (en) * 1979-05-15 1982-01-05 Etablissements Montabert S.A. Pneumatically cushioned percussion apparatus
US4388972A (en) * 1980-04-25 1983-06-21 Atlas Copco Aktiebolag Vibrationless impact tool
US5330202A (en) * 1992-10-08 1994-07-19 Ingersoll-Rand Company Tool retainer for a percussive, fluid-activated apparatus
EP1674209A3 (fr) * 2004-12-24 2009-08-12 J.C. Bamford Excavators Limited Outil de percussion à moteur
US20060185868A1 (en) * 2005-02-24 2006-08-24 Reimund Becht Handle assembly for hammer apparatus
GB2548579A (en) * 2016-03-21 2017-09-27 Webster Tech Ltd Power tool
GB2548579B (en) * 2016-03-21 2019-06-26 Webster Tech Limited A power tool comprising a tool carrier for mounting an impact tool
US11241779B2 (en) 2016-03-21 2022-02-08 Webster Technologies Limited Power tool
US20220152806A1 (en) * 2016-03-21 2022-05-19 Webster Technologies Limited Power tool
US10967495B2 (en) 2017-07-21 2021-04-06 Webster Technologies Limited Power tool

Also Published As

Publication number Publication date
ES263723A1 (es) 1961-04-01
GB974930A (en) 1964-11-11
CH398467A (de) 1966-03-15
BE598809A (fr) 1961-05-02
GB957204A (en) 1964-05-06

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