GB1212975A - Improvements in or relating to percussive tools - Google Patents

Improvements in or relating to percussive tools

Info

Publication number
GB1212975A
GB1212975A GB2831/67A GB283167A GB1212975A GB 1212975 A GB1212975 A GB 1212975A GB 2831/67 A GB2831/67 A GB 2831/67A GB 283167 A GB283167 A GB 283167A GB 1212975 A GB1212975 A GB 1212975A
Authority
GB
United Kingdom
Prior art keywords
piston
air
ports
cylinder
port
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
GB2831/67A
Other languages
English (en)
Inventor
Anthony Edward Walter Last
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.)
British Steel Piling Co Ltd
Original Assignee
British Steel Piling Co Ltd
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 British Steel Piling Co Ltd filed Critical British Steel Piling Co Ltd
Priority to GB2831/67A priority Critical patent/GB1212975A/en
Priority to US698624A priority patent/US3529511A/en
Priority to DEB74215U priority patent/DE1983498U/de
Priority to BE709642D priority patent/BE709642A/xx
Publication of GB1212975A publication Critical patent/GB1212975A/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
    • B25D2250/171—Percussive pulling action of tools for extraction of elements

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
GB2831/67A 1967-01-19 1967-01-19 Improvements in or relating to percussive tools Expired GB1212975A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB2831/67A GB1212975A (en) 1967-01-19 1967-01-19 Improvements in or relating to percussive tools
US698624A US3529511A (en) 1967-01-19 1968-01-17 Percussive tools utilizing a reciprocating differential area piston
DEB74215U DE1983498U (de) 1967-01-19 1968-01-18 Schlagwerkzeug.
BE709642D BE709642A (enrdf_load_stackoverflow) 1967-01-19 1968-01-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2831/67A GB1212975A (en) 1967-01-19 1967-01-19 Improvements in or relating to percussive tools

Publications (1)

Publication Number Publication Date
GB1212975A true GB1212975A (en) 1970-11-18

Family

ID=9746766

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2831/67A Expired GB1212975A (en) 1967-01-19 1967-01-19 Improvements in or relating to percussive tools

Country Status (4)

Country Link
US (1) US3529511A (enrdf_load_stackoverflow)
BE (1) BE709642A (enrdf_load_stackoverflow)
DE (1) DE1983498U (enrdf_load_stackoverflow)
GB (1) GB1212975A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
BE709642A (enrdf_load_stackoverflow) 1968-05-30
DE1983498U (de) 1968-04-11
US3529511A (en) 1970-09-22

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years