FR931219A - Improvements with jackhammers or perforators, concrete breakers or the like - Google Patents

Improvements with jackhammers or perforators, concrete breakers or the like

Info

Publication number
FR931219A
FR931219A FR931219DA FR931219A FR 931219 A FR931219 A FR 931219A FR 931219D A FR931219D A FR 931219DA FR 931219 A FR931219 A FR 931219A
Authority
FR
France
Prior art keywords
jackhammers
perforators
concrete breakers
breakers
concrete
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
Other languages
French (fr)
Inventor
Frank Leslie Douglas
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 filed Critical
Application granted granted Critical
Publication of FR931219A publication Critical patent/FR931219A/en
Expired legal-status Critical Current

Links

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
    • B25D9/10—Means for driving the impulse member comprising a built-in internal-combustion engine

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
FR931219D 1942-03-19 1946-07-24 Improvements with jackhammers or perforators, concrete breakers or the like Expired FR931219A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB931219X 1942-03-19

Publications (1)

Publication Number Publication Date
FR931219A true FR931219A (en) 1948-02-17

Family

ID=10737105

Family Applications (1)

Application Number Title Priority Date Filing Date
FR931219D Expired FR931219A (en) 1942-03-19 1946-07-24 Improvements with jackhammers or perforators, concrete breakers or the like

Country Status (1)

Country Link
FR (1) FR931219A (en)

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