GB2206301B - Drill grinding machines - Google Patents

Drill grinding machines

Info

Publication number: GB2206301B
Authority: GB; United Kingdom
Prior art keywords: grinding machines; drill grinding; drill; machines; grinding
Prior art date: 1987-06-23
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 - Lifetime

Application number

GB8814680A

Other versions

GB2206301A (en

GB8814680D0 (en

Inventor

Zachry Brierley

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.)

1987-06-23

Filing date

1988-06-21

Publication date

1991-04-03

1988-06-21 Application filed by Individual filed Critical Individual

1988-07-27 Publication of GB8814680D0 publication Critical patent/GB8814680D0/en

1989-01-05 Publication of GB2206301A publication Critical patent/GB2206301A/en

1991-04-03 Application granted granted Critical

1991-04-03 Publication of GB2206301B publication Critical patent/GB2206301B/en

2008-06-21 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B3/00—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools
- B24B3/24—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills
- B24B3/26—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills of the point of twist drills
- B24B3/28—Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools of drills of the point of twist drills by swivelling the drill around an axis angularly to the drill axis

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

GB8814680A 1987-06-23 1988-06-21 Drill grinding machines Expired - Lifetime GB2206301B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB878715078A GB8715078D0 (en)	1987-06-23	1987-06-23	Drill grinding machines

Publications (3)

Publication Number	Publication Date
GB8814680D0 GB8814680D0 (en)	1988-07-27
GB2206301A GB2206301A (en)	1989-01-05
GB2206301B true GB2206301B (en)	1991-04-03

Family

ID=10619651

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
GB878715078A Pending GB8715078D0 (en)	1987-06-23	1987-06-23	Drill grinding machines
GB8814680A Expired - Lifetime GB2206301B (en)	1987-06-23	1988-06-21	Drill grinding machines

Family Applications Before (1)

Application Number	Title	Priority Date	Filing Date
GB878715078A Pending GB8715078D0 (en)	1987-06-23	1987-06-23	Drill grinding machines

Country Status (2)

Country	Link
EP (1)	EP0296805A1 (en)
GB (2)	GB8715078D0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
IT1230940B (en) *	1989-06-28	1991-11-08	Carrera Pietro Rui Clementina	SHARPENING MACHINE FOR HELICAL POINTS, IN PARTICULAR FROM DRILL
US5649853A (en) *	1996-07-23	1997-07-22	Kuo; Chun-Lin	Drill bit grinding machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2344420A (en) *	1941-05-09	1944-03-14	Bell Aircraft Corp	Machine tool
US3494080A (en) *	1967-06-14	1970-02-10	Efrain Laguna	Machine for grinding split point drills
DE3202362C2 (en) *	1982-01-26	1986-05-22	Fa. Gottlieb Gühring, 7470 Albstadt	Device for sharpening a twist drill

1987
- 1987-06-23 GB GB878715078A patent/GB8715078D0/en active Pending
1988
- 1988-06-21 GB GB8814680A patent/GB2206301B/en not_active Expired - Lifetime
- 1988-06-21 EP EP88305651A patent/EP0296805A1/en not_active Withdrawn

Also Published As

Publication number	Publication date
EP0296805A1 (en)	1988-12-28
GB2206301A (en)	1989-01-05
GB8715078D0 (en)	1987-08-05
GB8814680D0 (en)	1988-07-27

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Legal Events

Date	Code	Title	Description
1994-02-16	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 19930621