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GB250838A - Improvement in rock drill spool valves - Google Patents

Improvement in rock drill spool valves

Info

Publication number
GB250838A
GB250838A GB25156/25A GB2515625A GB250838A GB 250838 A GB250838 A GB 250838A GB 25156/25 A GB25156/25 A GB 25156/25A GB 2515625 A GB2515625 A GB 2515625A GB 250838 A GB250838 A GB 250838A
Authority
GB
United Kingdom
Prior art keywords
improvement
rock drill
spool valves
spool
valves
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
GB25156/25A
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
Publication of GB250838A publication Critical patent/GB250838A/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
    • B25D9/18—Valve arrangements therefor involving a piston-type slide valve

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
GB25156/25A 1925-04-15 1925-10-08 Improvement in rock drill spool valves Expired GB250838A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US250838XA 1925-04-15 1925-04-15

Publications (1)

Publication Number Publication Date
GB250838A true GB250838A (en) 1926-04-22

Family

ID=21823946

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25156/25A Expired GB250838A (en) 1925-04-15 1925-10-08 Improvement in rock drill spool valves

Country Status (1)

Country Link
GB (1) GB250838A (en)

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