GB2190147B - - Google Patents

Info

Publication number
GB2190147B
GB2190147B GB8607725A GB8607725A GB2190147B GB 2190147 B GB2190147 B GB 2190147B GB 8607725 A GB8607725 A GB 8607725A GB 8607725 A GB8607725 A GB 8607725A GB 2190147 B GB2190147 B GB 2190147B
Authority
GB
United Kingdom
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
GB8607725A
Other versions
GB2190147A (en
GB8607725D0 (en
Inventor
Derek George Saunders
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 GB08607725A priority Critical patent/GB2190147A/en
Publication of GB8607725D0 publication Critical patent/GB8607725D0/en
Publication of GB2190147A publication Critical patent/GB2190147A/en
Application granted granted Critical
Publication of GB2190147B publication Critical patent/GB2190147B/en
Granted 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
    • B25D9/22—Valve arrangements therefor involving a rotary-type slide valve
    • 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
    • B25D9/145—Control devices for the reciprocating piston for hydraulically actuated hammers having an accumulator

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
GB08607725A 1986-03-27 1986-03-27 Hydraulically-operated tools Granted GB2190147A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08607725A GB2190147A (en) 1986-03-27 1986-03-27 Hydraulically-operated tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08607725A GB2190147A (en) 1986-03-27 1986-03-27 Hydraulically-operated tools

Publications (3)

Publication Number Publication Date
GB8607725D0 GB8607725D0 (en) 1986-04-30
GB2190147A GB2190147A (en) 1987-11-11
GB2190147B true GB2190147B (en) 1989-11-22

Family

ID=10595383

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08607725A Granted GB2190147A (en) 1986-03-27 1986-03-27 Hydraulically-operated tools

Country Status (1)

Country Link
GB (1) GB2190147A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10249139A1 (en) * 2002-10-22 2004-05-06 Robert Bosch Gmbh Air cushion percussion
FI116513B (en) * 2003-02-21 2005-12-15 Sandvik Tamrock Oy Type of device
FI121218B (en) 2003-07-07 2010-08-31 Sandvik Mining & Constr Oy Method for providing a voltage pulse to a tool and pressure fluid driven impact device
FI115451B (en) * 2003-07-07 2005-05-13 Sandvik Tamrock Oy Impact device and method for forming a voltage pulse in an impact device
FI123740B (en) 2005-01-05 2013-10-15 Sandvik Mining & Constr Oy A method for controlling a pressurized fluid impactor and impactor

Also Published As

Publication number Publication date
GB2190147A (en) 1987-11-11
GB8607725D0 (en) 1986-04-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee