FR2255147B1 - - Google Patents

Info

Publication number
FR2255147B1
FR2255147B1 FR7442475A FR7442475A FR2255147B1 FR 2255147 B1 FR2255147 B1 FR 2255147B1 FR 7442475 A FR7442475 A FR 7442475A FR 7442475 A FR7442475 A FR 7442475A FR 2255147 B1 FR2255147 B1 FR 2255147B1
Authority
FR
France
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
FR7442475A
Other languages
French (fr)
Other versions
FR2255147A1 (en
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.)
DUSS MASCHF
Original Assignee
DUSS MASCHF
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 DUSS MASCHF filed Critical DUSS MASCHF
Publication of FR2255147A1 publication Critical patent/FR2255147A1/en
Application granted granted Critical
Publication of FR2255147B1 publication Critical patent/FR2255147B1/fr
Granted 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
    • B25D11/12—Means for driving the impulse member comprising a crank mechanism
    • B25D11/125—Means for driving the impulse member comprising a crank mechanism with a fluid cushion between the crank drive and the striking body

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Presses And Accessory Devices Thereof (AREA)
FR7442475A 1973-12-22 1974-12-23 Air cushion in impact press - is situated between piston and hammer top with vent connection to atmosphere Granted FR2255147A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732364236 DE2364236A1 (en) 1973-12-22 1973-12-22 IMPACT DEVICE

Publications (2)

Publication Number Publication Date
FR2255147A1 FR2255147A1 (en) 1975-07-18
FR2255147B1 true FR2255147B1 (en) 1978-10-13

Family

ID=5901743

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7442475A Granted FR2255147A1 (en) 1973-12-22 1974-12-23 Air cushion in impact press - is situated between piston and hammer top with vent connection to atmosphere

Country Status (4)

Country Link
CH (1) CH577368A5 (en)
DE (1) DE2364236A1 (en)
FR (1) FR2255147A1 (en)
NL (1) NL7416678A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2550725C3 (en) * 1975-11-12 1981-11-12 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Hammer drill
DE2605998C3 (en) * 1976-02-14 1981-12-24 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Rotary hammer with drive and impact elements housed in a cylinder
US4113035A (en) * 1977-04-21 1978-09-12 Licentia Patent-Verwaltungs-G.M.B.H. Hammer drill with drive and percussion elements accommodated in a cylinder
US4336847A (en) * 1980-06-27 1982-06-29 Hitachi Koki Company, Limited Percussion drill
DE3316013A1 (en) * 1983-05-03 1984-11-08 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Hammer drill with a pneumatically actuated percussion body
US4582144A (en) * 1984-04-25 1986-04-15 Makita Electric Works, Ltd. Percussive tools
DE4239294A1 (en) * 1992-11-23 1994-05-26 Black & Decker Inc Hammer drill with pneumatic hammer mechanism
DE19843644B4 (en) * 1998-09-23 2004-03-25 Wacker Construction Equipment Ag Pipe impact mechanism with return air spring
ES2372448T3 (en) * 2009-01-30 2012-01-19 Hilti Aktiengesellschaft PNEUMATIC IMPACT MECHANISM.

Also Published As

Publication number Publication date
DE2364236A1 (en) 1975-06-26
NL7416678A (en) 1975-06-24
CH577368A5 (en) 1976-07-15
FR2255147A1 (en) 1975-07-18

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Legal Events

Date Code Title Description
ST Notification of lapse