FR733954A - Perfectionnements aux marteaux perforateurs - Google Patents

Perfectionnements aux marteaux perforateurs

Info

Publication number
FR733954A
FR733954A FR733954DA FR733954A FR 733954 A FR733954 A FR 733954A FR 733954D A FR733954D A FR 733954DA FR 733954 A FR733954 A FR 733954A
Authority
FR
France
Prior art keywords
hammer drills
drills
hammer
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
English (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.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand Co
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 Ingersoll Rand Co filed Critical Ingersoll Rand Co
Application granted granted Critical
Publication of FR733954A publication Critical patent/FR733954A/fr
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
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/16—Valve arrangements therefor
    • B25D9/20—Valve arrangements therefor involving a tubular-type slide valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2209/00—Details of portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D2209/005—Details of portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously having a tubular-slide valve, which is coaxial with the piston

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR733954D 1931-09-22 1932-03-21 Perfectionnements aux marteaux perforateurs Expired FR733954A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US733954XA 1931-09-22 1931-09-22

Publications (1)

Publication Number Publication Date
FR733954A true FR733954A (fr) 1932-10-14

Family

ID=22113445

Family Applications (1)

Application Number Title Priority Date Filing Date
FR733954D Expired FR733954A (fr) 1931-09-22 1932-03-21 Perfectionnements aux marteaux perforateurs

Country Status (1)

Country Link
FR (1) FR733954A (fr)

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