GB2092938B - Improvements in or relating to percussive air-driven drill assemblies - Google Patents

Improvements in or relating to percussive air-driven drill assemblies

Info

Publication number
GB2092938B
GB2092938B GB8204710A GB8204710A GB2092938B GB 2092938 B GB2092938 B GB 2092938B GB 8204710 A GB8204710 A GB 8204710A GB 8204710 A GB8204710 A GB 8204710A GB 2092938 B GB2092938 B GB 2092938B
Authority
GB
United Kingdom
Prior art keywords
relating
driven drill
drill assemblies
percussive air
percussive
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
GB8204710A
Other versions
GB2092938A (en
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 Corp
Original Assignee
British Steel Corp
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 Corp filed Critical British Steel Corp
Publication of GB2092938A publication Critical patent/GB2092938A/en
Application granted granted Critical
Publication of GB2092938B publication Critical patent/GB2092938B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/04—Handles; Handle mountings
    • B25D17/043—Handles resiliently mounted relative to the hammer housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/24—Damping the reaction force
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
    • E21B19/087—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods by means of a swinging arm
GB8204710A 1981-02-17 1982-02-17 Improvements in or relating to percussive air-driven drill assemblies Expired GB2092938B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8104968 1981-02-17
GB8107540 1981-03-10

Publications (2)

Publication Number Publication Date
GB2092938A GB2092938A (en) 1982-08-25
GB2092938B true GB2092938B (en) 1984-04-18

Family

ID=26278470

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8204710A Expired GB2092938B (en) 1981-02-17 1982-02-17 Improvements in or relating to percussive air-driven drill assemblies

Country Status (2)

Country Link
DE (1) DE3205300A1 (en)
GB (1) GB2092938B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK46388D0 (en) * 1988-01-29 1988-01-29 Dansk Ind Syndikat FURNITURE FOR BORETAARN
SE468837B (en) * 1991-07-12 1993-03-29 Anders Svensson HAALLARE
WO2000047862A1 (en) * 1999-02-10 2000-08-17 Anglo Operations Limited Rock drill handle

Also Published As

Publication number Publication date
DE3205300A1 (en) 1982-09-16
GB2092938A (en) 1982-08-25

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Legal Events

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