ATE368552T1 - HAMMER DRILL - Google Patents

HAMMER DRILL

Info

Publication number
ATE368552T1
ATE368552T1 AT00303158T AT00303158T ATE368552T1 AT E368552 T1 ATE368552 T1 AT E368552T1 AT 00303158 T AT00303158 T AT 00303158T AT 00303158 T AT00303158 T AT 00303158T AT E368552 T1 ATE368552 T1 AT E368552T1
Authority
AT
Austria
Prior art keywords
impact member
resilient ring
hammer
cylinder
bit
Prior art date
Application number
AT00303158T
Other languages
German (de)
Inventor
Reinhard Plietsch
Michael Stirm
Original Assignee
Black & 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 & Decker Inc filed Critical Black & Decker Inc
Application granted granted Critical
Publication of ATE368552T1 publication Critical patent/ATE368552T1/en

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)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Percussion Or Vibration Massage (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).
AT00303158T 1999-04-30 2000-04-14 HAMMER DRILL ATE368552T1 (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ATE368552T1 true ATE368552T1 (en) 2007-08-15

Family

ID=10852556

Family Applications (1)

Application Number Title Priority Date Filing Date
AT00303158T ATE368552T1 (en) 1999-04-30 2000-04-14 HAMMER DRILL

Country Status (5)

Country Link
EP (2) EP1815947A3 (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
US7032683B2 (en) 2001-09-17 2006-04-25 Milwaukee Electric Tool Corporation 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

Family Cites Families (12)

* 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
DE2820128A1 (en) * 1978-05-09 1979-11-22 Bosch Gmbh Robert CRAFT MACHINE
DE2844086A1 (en) * 1978-10-10 1980-04-30 Bosch Gmbh Robert HAND MACHINE, IN PARTICULAR HAMMER
DE2916499A1 (en) * 1979-04-24 1980-11-06 Duss Maschf ELECTRIC HAND DRILLING MACHINE WITH DEVICE FOR ADJUSTMENT FOR ROTATING OR IMPACTING DRILLING
EP0052507B1 (en) * 1980-11-18 1985-02-13 Black & Decker Inc. Percussive drills
DE3309187A1 (en) * 1983-03-15 1984-09-20 Robert Bosch Gmbh, 7000 Stuttgart HAMMER, ESPECIALLY DRILLING HAMMER
DE3335795A1 (en) * 1983-10-01 1985-04-18 Black & Decker Inc., Newark, Del. DRILLING HAMMER
DE3520036A1 (en) * 1985-06-04 1986-12-04 "F. u. K." Frölich & Klüpfel Drucklufttechnik GmbH & Co KG, 5600 Wuppertal Inscription hammer
DE3531641A1 (en) * 1985-09-05 1987-03-05 Hilti Ag DRILL AND CHISEL HAMMER
JP3424870B2 (en) * 1995-02-28 2003-07-07 株式会社マキタ Immersion prevention device for impact tools

Also Published As

Publication number Publication date
EP1048415A3 (en) 2002-07-24
GB9909987D0 (en) 1999-06-30
DE60035732T2 (en) 2008-04-30
EP1048415B1 (en) 2007-08-01
EP1815947A3 (en) 2013-03-06
EP1048415A2 (en) 2000-11-02
JP2000326263A (en) 2000-11-28
DE60035732D1 (en) 2007-09-13
EP1815947A2 (en) 2007-08-08

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties