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GB1396812A - Electric tools - Google Patents

Electric tools

Info

Publication number
GB1396812A
GB1396812A GB1945373A GB1945373A GB1396812A GB 1396812 A GB1396812 A GB 1396812A GB 1945373 A GB1945373 A GB 1945373A GB 1945373 A GB1945373 A GB 1945373A GB 1396812 A GB1396812 A GB 1396812A
Authority
GB
United Kingdom
Prior art keywords
hammer
intermediate member
coil
current pulse
rebounds
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
GB1945373A
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.)
VNII MEKHANIZIROVANNOGO I RUCH
Original Assignee
VNII MEKHANIZIROVANNOGO I RUCH
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 VNII MEKHANIZIROVANNOGO I RUCH filed Critical VNII MEKHANIZIROVANNOGO I RUCH
Priority to GB1945373A priority Critical patent/GB1396812A/en
Publication of GB1396812A publication Critical patent/GB1396812A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B25D11/06—Means for driving the impulse member
    • B25D11/064—Means for driving the impulse member using an electromagnetic drive

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

1396812 Percussive tools VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY INSTITUT MEKHANIZIROVANNOGO I RUCHNOGO STROITELNOMONTAZHNOGO INSTRUMENTA VIBRATOROV I STROITELNOOTDELOCHNYKH MASHIN 24 April 1973 19453/73 Heading B4C A solenoid operated percussive tool comprises a hammer 6 mounted in a stator 2 and a shock absorber 9 which includes a resilient member 10 and an intermediate member 11 whose mass is greater than that of the hammer. Upon feeding a current pulse to the coil 4, the hammer imparts a blow to the tool 8 and then rebounds therefrom. A current pulse is then fed to the coil 5 to accelerate the hammer into impact engagement with the intermediate member 11. The hammer rebounds and is again acted upon by the coil 4. The impact of the hammer on the intermediate member causes the intermediate member to compress the spring 10 and return to meet the next rearward stroke of the hammer. The hammer 6 and intermediate member 11 again move apart to repeat the cycle.
GB1945373A 1973-04-24 1973-04-24 Electric tools Expired GB1396812A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1945373A GB1396812A (en) 1973-04-24 1973-04-24 Electric tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1945373A GB1396812A (en) 1973-04-24 1973-04-24 Electric tools

Publications (1)

Publication Number Publication Date
GB1396812A true GB1396812A (en) 1975-06-04

Family

ID=10129632

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1945373A Expired GB1396812A (en) 1973-04-24 1973-04-24 Electric tools

Country Status (1)

Country Link
GB (1) GB1396812A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007000085A1 (en) 2007-02-13 2008-08-14 Hilti Ag Method for controlling a linear motor for driving a hammer mechanism
EP2036680A2 (en) 2007-09-12 2009-03-18 HILTI Aktiengesellschaft Hand-held machine tool with a percussion mechanism having a pneumatic spring, a linear motor and control method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007000085A1 (en) 2007-02-13 2008-08-14 Hilti Ag Method for controlling a linear motor for driving a hammer mechanism
EP1958733A2 (en) 2007-02-13 2008-08-20 HILTI Aktiengesellschaft Method for controlling a linear motor for actuating a striking mechanism
EP2036680A2 (en) 2007-09-12 2009-03-18 HILTI Aktiengesellschaft Hand-held machine tool with a percussion mechanism having a pneumatic spring, a linear motor and control method
DE102007000488A1 (en) 2007-09-12 2009-03-19 Hilti Aktiengesellschaft Hand tool with air spring impact mechanism, linear motor and control method
US7926584B2 (en) 2007-09-12 2011-04-19 Hilti Aktiengesellschaft Hand-held power tool with air spring percussion mechanism, linear motor, and control process

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee