FR725505A - Perfectionnement aux forets - Google Patents

Perfectionnement aux forets

Info

Publication number: FR725505A
Authority: FR; France
Prior art keywords: drills; further training; training
Prior art date: 1931-10-31
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

Other languages

Inventor

Eugene Fouquet

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.)

1931-10-31

Filing date

1931-10-31

Publication date

1932-05-13

1931-10-31 Application filed filed Critical

1932-05-13 Application granted granted Critical

1932-05-13 Publication of FR725505A publication Critical patent/FR725505A/fr

Status Expired legal-status Critical Current

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/009—Stepped drills
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/02—Twist drills
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/24—Overall form of drilling tools
- B23B2251/241—Cross sections of the diameter of the drill

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)

FR725505D 1931-10-31 1931-10-31 Perfectionnement aux forets Expired FR725505A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR725505T		1931-10-31

Publications (1)

Publication Number	Publication Date
FR725505A true FR725505A (fr)	1932-05-13

Family

ID=9110114

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR725505D Expired FR725505A (fr)	1931-10-31	1931-10-31	Perfectionnement aux forets

Country Status (1)

Country	Link
FR (1)	FR725505A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3758222A (en) *	1971-12-30	1973-09-11	H Oakes	Drill bit
US4582458A (en) *	1984-08-09	1986-04-15	American Saw & Mfg. Company	Stepped drill construction
US5915893A (en) *	1996-06-05	1999-06-29	Kabushiki Kaisha Miyanaga	Multistage bit and stopper
GB2405820A (en) *	2003-09-10	2005-03-16	Bradford Tool Group	Stepped drill bit with spiral fluting
US8029215B2 (en)	2007-01-05	2011-10-04	Greenlee Textron Inc.	Spiral drill bit and method of forming same
EP2934802B1 (fr)	2012-12-20	2016-07-13	Walter AG	Foret hélicoïdal
US20170129022A1 (en) *	2015-11-10	2017-05-11	Irwin Industrial Tool Company	Step drill bit with variable helical flute
US20220288702A1 (en) *	2019-07-09	2022-09-15	Kyocera Corporation	Rotary tool and method for manufacturing machined product

1931
- 1931-10-31 FR FR725505D patent/FR725505A/fr not_active Expired

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3758222A (en) *	1971-12-30	1973-09-11	H Oakes	Drill bit
US4582458A (en) *	1984-08-09	1986-04-15	American Saw & Mfg. Company	Stepped drill construction
US5915893A (en) *	1996-06-05	1999-06-29	Kabushiki Kaisha Miyanaga	Multistage bit and stopper
GB2405820A (en) *	2003-09-10	2005-03-16	Bradford Tool Group	Stepped drill bit with spiral fluting
US8029215B2 (en)	2007-01-05	2011-10-04	Greenlee Textron Inc.	Spiral drill bit and method of forming same
EP2934802B1 (fr)	2012-12-20	2016-07-13	Walter AG	Foret hélicoïdal
EP2934802B2 (fr) †	2012-12-20	2019-12-11	Walter AG	Foret hélicoïdal
US20170129022A1 (en) *	2015-11-10	2017-05-11	Irwin Industrial Tool Company	Step drill bit with variable helical flute
US10058929B2 (en) *	2015-11-10	2018-08-28	Irwin Industrial Tool Company	Step drill bit with variable helical flute
US20220288702A1 (en) *	2019-07-09	2022-09-15	Kyocera Corporation	Rotary tool and method for manufacturing machined product

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