FR624602A - Rock Drill Improvements - Google Patents

Rock Drill Improvements

Info

Publication number
FR624602A
FR624602A FR624602DA FR624602A FR 624602 A FR624602 A FR 624602A FR 624602D A FR624602D A FR 624602DA FR 624602 A FR624602 A FR 624602A
Authority
FR
France
Prior art keywords
rock drill
drill
rock
drill improvements
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)
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 FR624602A publication Critical patent/FR624602A/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
    • B25D9/14—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)
FR624602D 1926-11-15 1926-11-15 Rock Drill Improvements Expired FR624602A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR624602T 1926-11-15

Publications (1)

Publication Number Publication Date
FR624602A true FR624602A (en) 1927-07-22

Family

ID=8987189

Family Applications (1)

Application Number Title Priority Date Filing Date
FR624602D Expired FR624602A (en) 1926-11-15 1926-11-15 Rock Drill Improvements

Country Status (1)

Country Link
FR (1) FR624602A (en)

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