EP1815947A3 - Rotary hammer - Google Patents

Rotary hammer Download PDF

Info

Publication number
EP1815947A3
EP1815947A3 EP07105981A EP07105981A EP1815947A3 EP 1815947 A3 EP1815947 A3 EP 1815947A3 EP 07105981 A EP07105981 A EP 07105981A EP 07105981 A EP07105981 A EP 07105981A EP 1815947 A3 EP1815947 A3 EP 1815947A3
Authority
EP
European Patent Office
Prior art keywords
impact member
resilient ring
hammer
cylinder
bit
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.)
Withdrawn
Application number
EP07105981A
Other languages
German (de)
French (fr)
Other versions
EP1815947A2 (en
Inventor
Reinhard Plietsch
Michael Stirm
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.)
Black and Decker Inc
Original Assignee
Black and Decker 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 Black and Decker Inc filed Critical Black and Decker Inc
Publication of EP1815947A2 publication Critical patent/EP1815947A2/en
Publication of EP1815947A3 publication Critical patent/EP1815947A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B25D17/06—Hammer pistons; Anvils ; Guide-sleeves for pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/005—Arrangements for adjusting the stroke of the impulse member or for stopping the impact action when the tool is lifted from the working surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/0011—Details of anvils, guide-sleeves or pistons
    • B25D2217/0023—Pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/035—Bleeding holes, e.g. in piston guide-sleeves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/191—Ram catchers for stopping the ram when entering idling mode
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/365—Use of seals

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)

Abstract

A hammer that is capable or receiving a tool bit (30) for acting on a workpiece, and includes an air cushion hammering mechanism and an arrangement for arresting the impact member (12) in its forward position, which comprises a resilient ring (52) that is located within the cylinder (2) and extends around the impact member, the impact member (12) having an intermediate portion (100) of varying diameter so that, at a given position of the impact member in the cylinder, the intermediate portion (100) of the impact member touches the resilient ring (52) and a substantially closed chamber is formed within the cylinder (2) that extends around the resilient ring (52), further forward movement of the impact member reducing the volume of the chamber (70) and causing the resilient ring (52) to constrict the impact member. A hammer is also provided in which the bit (30) is retained in the tool holder by means of one or more locking elements (42) and the hammer includes one or more cushioning elements (34,36) located between a tool holder (4) and the housing (1) so that impacts that are reflected by the workpiece back along the bit (30) are transmitted to the housing via the tool holder (4) and the cushioning element(s) (34,36).
EP07105981A 1999-04-30 2000-04-14 Rotary hammer Withdrawn EP1815947A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9909987.1A GB9909987D0 (en) 1999-04-30 1999-04-30 Rotary hammer
EP00303158A EP1048415B1 (en) 1999-04-30 2000-04-14 Rotary hammer

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP00303158.0 Division 2000-04-14
EP00303158A Division EP1048415B1 (en) 1999-04-30 2000-04-14 Rotary hammer

Publications (2)

Publication Number Publication Date
EP1815947A2 EP1815947A2 (en) 2007-08-08
EP1815947A3 true EP1815947A3 (en) 2013-03-06

Family

ID=10852556

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00303158A Expired - Lifetime EP1048415B1 (en) 1999-04-30 2000-04-14 Rotary hammer
EP07105981A Withdrawn EP1815947A3 (en) 1999-04-30 2000-04-14 Rotary hammer

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP00303158A Expired - Lifetime EP1048415B1 (en) 1999-04-30 2000-04-14 Rotary hammer

Country Status (5)

Country Link
EP (2) EP1048415B1 (en)
JP (1) JP2000326263A (en)
AT (1) ATE368552T1 (en)
DE (1) DE60035732T2 (en)
GB (1) GB9909987D0 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10030962C2 (en) * 2000-06-24 2002-06-20 Hilti Ag Electric hand tool device with striking mechanism
DE10294312T5 (en) * 2001-09-17 2004-09-02 Milwaukee Electric Tool Corp., Brookfield rotary hammer
DE10260710A1 (en) * 2002-12-23 2004-07-01 Robert Bosch Gmbh Hammer or percussion hammer
DE10362025B4 (en) * 2003-05-20 2006-02-09 Robert Bosch Gmbh Drill or hammer
DE102007000081A1 (en) * 2007-02-08 2008-08-21 Hilti Ag Hand tool with pneumatic percussion
DE102007056531A1 (en) * 2007-11-23 2009-05-28 Hilti Aktiengesellschaft Hand tool machine with impact tool holder and associated tool
DE102009045656A1 (en) * 2009-10-14 2011-04-21 Robert Bosch Gmbh Drilling and/or chipping hammer device, has puncher support device including puncher brake unit, storage unit storing puncher brake unit movably relative to housing unit, and guiding unit partially formed from hammer tube
DE102012212231A1 (en) 2012-07-12 2014-01-16 Hilti Aktiengesellschaft Hand tool
JP6070368B2 (en) * 2013-03-29 2017-02-01 日立工機株式会社 Impact tool
EP3009237A1 (en) * 2014-10-16 2016-04-20 HILTI Aktiengesellschaft Chisel hammer
EP3231560A1 (en) * 2016-04-13 2017-10-18 HILTI Aktiengesellschaft Handheld machine tool
CN112223218A (en) * 2020-10-23 2021-01-15 杭州兔研工业设计有限公司 Impact head for electric pick and electric pick

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2820128A1 (en) * 1978-05-09 1979-11-22 Bosch Gmbh Robert CRAFT MACHINE
FR2454864A1 (en) * 1979-04-24 1980-11-21 Duss Maschf ELECTRIC HAND DRILL HAVING A DEVICE FOR GOING BETWEEN DRILLING BY ROTATION TO DRILLING BY PERCUSSION
FR2552696A1 (en) * 1983-10-01 1985-04-05 Black & Decker Inc HAMMER DRILL
EP0218547A2 (en) * 1985-09-05 1987-04-15 HILTI Aktiengesellschaft Drilling or chiseling hammer
US5871059A (en) * 1995-02-28 1999-02-16 Makita Corporation Mechanism for preventing idling strikes in power-driven striking tools

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1594228A (en) * 1925-06-20 1926-07-27 Ingersoll Rand Co Dustless anvil block
GB810464A (en) * 1954-11-12 1959-03-18 Arno Jochums Improvements in or relating to pneumatic tools
US3921729A (en) * 1971-11-25 1975-11-25 Hilti Ag Electropneumatic hammer
DE2844086A1 (en) * 1978-10-10 1980-04-30 Bosch Gmbh Robert HAND MACHINE, IN PARTICULAR HAMMER
US4442906A (en) * 1980-11-18 1984-04-17 Black & Decker Inc. Percussive drills
DE3309187A1 (en) * 1983-03-15 1984-09-20 Robert Bosch Gmbh, 7000 Stuttgart HAMMER, ESPECIALLY DRILLING HAMMER
DE3520036A1 (en) * 1985-06-04 1986-12-04 "F. u. K." Frölich & Klüpfel Drucklufttechnik GmbH & Co KG, 5600 Wuppertal Inscription hammer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2820128A1 (en) * 1978-05-09 1979-11-22 Bosch Gmbh Robert CRAFT MACHINE
FR2454864A1 (en) * 1979-04-24 1980-11-21 Duss Maschf ELECTRIC HAND DRILL HAVING A DEVICE FOR GOING BETWEEN DRILLING BY ROTATION TO DRILLING BY PERCUSSION
FR2552696A1 (en) * 1983-10-01 1985-04-05 Black & Decker Inc HAMMER DRILL
EP0218547A2 (en) * 1985-09-05 1987-04-15 HILTI Aktiengesellschaft Drilling or chiseling hammer
US5871059A (en) * 1995-02-28 1999-02-16 Makita Corporation Mechanism for preventing idling strikes in power-driven striking tools

Also Published As

Publication number Publication date
ATE368552T1 (en) 2007-08-15
DE60035732T2 (en) 2008-04-30
EP1048415A2 (en) 2000-11-02
JP2000326263A (en) 2000-11-28
EP1048415A3 (en) 2002-07-24
EP1815947A2 (en) 2007-08-08
DE60035732D1 (en) 2007-09-13
GB9909987D0 (en) 1999-06-30
EP1048415B1 (en) 2007-08-01

Similar Documents

Publication Publication Date Title
US4582144A (en) Percussive tools
EP1815947A3 (en) Rotary hammer
US7789168B2 (en) Vibration reduction apparatus for power tool and power tool incorporating such apparatus
AU2122802A (en) Tool for machining of metals with vibration damping means
DE60200127D1 (en) hammer
MXPA04006028A (en) Side handles on drill/drivers.
GB2384742A (en) Rotary hammer
GB1350401A (en) Power hammers
HU9600720D0 (en) Device for transmitting impulse-like impacts to a continually rotating
DE60035443D1 (en) impact drill
CA2227499A1 (en) Pneumatic impact tool
GB0100605D0 (en) Hammer
WO1999019596A3 (en) Directional drilling tool
DE60036244D1 (en) impact drill
AU3020392A (en) Down-the-hole drill
ATE145576T1 (en) JACKHAMMER
CA2059349A1 (en) Energy transfer unit for a pile driver
US3356166A (en) Percussive tool
JPS5834770A (en) Vibration damping portable impact tool
EP1446266B1 (en) Tool holder for hammer
JPS61109674A (en) Negative pressure suction type rock drill
CA2426400A1 (en) Rock drilling machine
US6776243B2 (en) Carrying handle for a percussion power tool
JPS6029434Y2 (en) Dry-driving prevention mechanism for hammer drills, etc.
KR100525990B1 (en) control apparatus of bit angle for hammer

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20070411

AC Divisional application: reference to earlier application

Ref document number: 1048415

Country of ref document: EP

Kind code of ref document: P

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

RIC1 Information provided on ipc code assigned before grant

Ipc: B25D 11/04 20060101ALI20120822BHEP

Ipc: B25D 17/06 20060101AFI20120822BHEP

Ipc: B25D 11/00 20060101ALI20120822BHEP

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Extension state: AL MK

RIC1 Information provided on ipc code assigned before grant

Ipc: B25D 11/00 20060101ALI20130131BHEP

Ipc: B25D 11/04 20060101ALI20130131BHEP

Ipc: B25D 17/06 20060101AFI20130131BHEP

AKX Designation fees paid

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17Q First examination report despatched

Effective date: 20140303

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20140715