GB210662A - Improvements in, or relating to, valve apparatus for rock drills and like fluid pressure operated tools - Google Patents

Improvements in, or relating to, valve apparatus for rock drills and like fluid pressure operated tools

Info

Publication number
GB210662A
GB210662A GB917423A GB917423A GB210662A GB 210662 A GB210662 A GB 210662A GB 917423 A GB917423 A GB 917423A GB 917423 A GB917423 A GB 917423A GB 210662 A GB210662 A GB 210662A
Authority
GB
United Kingdom
Prior art keywords
relating
fluid pressure
valve apparatus
pressure operated
operated tools
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
GB917423A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB917423A priority Critical patent/GB210662A/en
Publication of GB210662A publication Critical patent/GB210662A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

210,662. Rayner, G. H. T., and Rayner, P. April 3, 1923. Addition to 192,277 and 208,961. Fluid - actuated gears. -In valve-gears of the kind described in the parent Specifications multiple inlet and exhaust ports j, j<1> k, k<1> are provided which are controlled by a single valve, or in pairs by separate hollow valves h, h<1> working in unison. Arcshaped channels g<3> communicating with the inlets are provided between the ports or between each pair of ports to feed fluid to the underside of the valve or valves.
GB917423A 1923-04-03 1923-04-03 Improvements in, or relating to, valve apparatus for rock drills and like fluid pressure operated tools Expired GB210662A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB917423A GB210662A (en) 1923-04-03 1923-04-03 Improvements in, or relating to, valve apparatus for rock drills and like fluid pressure operated tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB917423A GB210662A (en) 1923-04-03 1923-04-03 Improvements in, or relating to, valve apparatus for rock drills and like fluid pressure operated tools

Publications (1)

Publication Number Publication Date
GB210662A true GB210662A (en) 1924-02-07

Family

ID=9866828

Family Applications (1)

Application Number Title Priority Date Filing Date
GB917423A Expired GB210662A (en) 1923-04-03 1923-04-03 Improvements in, or relating to, valve apparatus for rock drills and like fluid pressure operated tools

Country Status (1)

Country Link
GB (1) GB210662A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004073931A1 (en) * 2003-02-21 2004-09-02 Sandvik Tamrock Oy Control valve and a method of a percussion device comprising two parallel inlet channels

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004073931A1 (en) * 2003-02-21 2004-09-02 Sandvik Tamrock Oy Control valve and a method of a percussion device comprising two parallel inlet channels
US7174824B2 (en) 2003-02-21 2007-02-13 Sahdvik Tamrock Oy Control valve in a percussion device and a method comprising a closed pressure space at the end position of the piston

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