FR662831A - Valve for rock drills - Google Patents

Valve for rock drills

Info

Publication number
FR662831A
FR662831A FR662831DA FR662831A FR 662831 A FR662831 A FR 662831A FR 662831D A FR662831D A FR 662831DA FR 662831 A FR662831 A FR 662831A
Authority
FR
France
Prior art keywords
valve
rock drills
drills
rock
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 FR662831A publication Critical patent/FR662831A/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
    • B25D2209/007—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 not coaxial with the piston

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR662831D 1928-10-23 1928-10-23 Valve for rock drills Expired FR662831A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR662831T 1928-10-23

Publications (1)

Publication Number Publication Date
FR662831A true FR662831A (en) 1929-08-12

Family

ID=9011704

Family Applications (1)

Application Number Title Priority Date Filing Date
FR662831D Expired FR662831A (en) 1928-10-23 1928-10-23 Valve for rock drills

Country Status (1)

Country Link
FR (1) FR662831A (en)

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