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GB2291369B - Forming holes - Google Patents

Forming holes

Info

Publication number
GB2291369B
GB2291369B GB9414278A GB9414278A GB2291369B GB 2291369 B GB2291369 B GB 2291369B GB 9414278 A GB9414278 A GB 9414278A GB 9414278 A GB9414278 A GB 9414278A GB 2291369 B GB2291369 B GB 2291369B
Authority
GB
United Kingdom
Prior art keywords
forming holes
holes
forming
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 - Fee Related
Application number
GB9414278A
Other versions
GB9414278D0 (en
GB2291369A (en
Inventor
Clive Lear
Keith Kemp
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.)
Unicorn Abrasives Ltd
Original Assignee
Unicorn Abrasives 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 Unicorn Abrasives Ltd filed Critical Unicorn Abrasives Ltd
Priority to GB9414278A priority Critical patent/GB2291369B/en
Priority to GB9414605A priority patent/GB9414605D0/en
Publication of GB9414278D0 publication Critical patent/GB9414278D0/en
Publication of GB2291369A publication Critical patent/GB2291369A/en
Application granted granted Critical
Publication of GB2291369B publication Critical patent/GB2291369B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/0018—Drills for enlarging a hole
    • B23B51/0045—Drills for enlarging a hole by expanding or tilting the toolhead

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
GB9414278A 1994-07-15 1994-07-15 Forming holes Expired - Fee Related GB2291369B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9414278A GB2291369B (en) 1994-07-15 1994-07-15 Forming holes
GB9414605A GB9414605D0 (en) 1994-07-15 1994-07-20 Forming holes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9414278A GB2291369B (en) 1994-07-15 1994-07-15 Forming holes

Publications (3)

Publication Number Publication Date
GB9414278D0 GB9414278D0 (en) 1994-09-07
GB2291369A GB2291369A (en) 1996-01-24
GB2291369B true GB2291369B (en) 1998-06-10

Family

ID=10758366

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9414278A Expired - Fee Related GB2291369B (en) 1994-07-15 1994-07-15 Forming holes
GB9414605A Pending GB9414605D0 (en) 1994-07-15 1994-07-20 Forming holes

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9414605A Pending GB9414605D0 (en) 1994-07-15 1994-07-20 Forming holes

Country Status (1)

Country Link
GB (2) GB2291369B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1434173A (en) * 1973-06-20 1976-05-05 Stumpp Kurz Drilling of holes
US4347768A (en) * 1978-07-05 1982-09-07 Hilti Aktiengesellschaft Drilling tool for producing an undercut bore
GB2248200A (en) * 1990-09-28 1992-04-01 David Patrick Payne Expansible drill bit for undercutting bores

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1434173A (en) * 1973-06-20 1976-05-05 Stumpp Kurz Drilling of holes
US4347768A (en) * 1978-07-05 1982-09-07 Hilti Aktiengesellschaft Drilling tool for producing an undercut bore
GB2248200A (en) * 1990-09-28 1992-04-01 David Patrick Payne Expansible drill bit for undercutting bores

Also Published As

Publication number Publication date
GB9414278D0 (en) 1994-09-07
GB2291369A (en) 1996-01-24
GB9414605D0 (en) 1994-09-07

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Legal Events

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

Effective date: 20020715