GB2185915B - Groove point screw - Google Patents

Groove point screw

Info

Publication number
GB2185915B
GB2185915B GB8700157A GB8700157A GB2185915B GB 2185915 B GB2185915 B GB 2185915B GB 8700157 A GB8700157 A GB 8700157A GB 8700157 A GB8700157 A GB 8700157A GB 2185915 B GB2185915 B GB 2185915B
Authority
GB
United Kingdom
Prior art keywords
groove point
point screw
screw
groove
point
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
GB8700157A
Other versions
GB2185915A (en
GB8700157D0 (en
Inventor
George Jesson
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.)
Emhart Industries Inc
Emhart Enterprises Corp
USM Corp
Original Assignee
Emhart Industries Inc
Emhart Enterprises Corp
USM 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 Emhart Industries Inc, Emhart Enterprises Corp, USM Corp filed Critical Emhart Industries Inc
Publication of GB8700157D0 publication Critical patent/GB8700157D0/en
Publication of GB2185915A publication Critical patent/GB2185915A/en
Application granted granted Critical
Publication of GB2185915B publication Critical patent/GB2185915B/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
    • F16B25/103—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a drilling screw-point, i.e. with a cutting and material removing action
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00—Making machine elements
    • B21K1/56—Making machine elements screw-threaded elements
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
    • F16B25/0021—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the material being metal, e.g. sheet-metal or aluminium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0084—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by geometric details of the tip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/18—Configuration of the drill point
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/48—Chip breakers
GB8700157A 1986-01-09 1987-01-06 Groove point screw Expired GB2185915B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US81730386A 1986-01-09 1986-01-09

Publications (3)

Publication Number Publication Date
GB8700157D0 GB8700157D0 (en) 1987-02-11
GB2185915A GB2185915A (en) 1987-08-05
GB2185915B true GB2185915B (en) 1989-11-22

Family

ID=25222773

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8700157A Expired GB2185915B (en) 1986-01-09 1987-01-06 Groove point screw

Country Status (8)

Country Link
JP (1) JPS62242111A (en)
AU (1) AU586060B2 (en)
CA (1) CA1285798C (en)
CH (1) CH672171A5 (en)
DE (1) DE3700499C2 (en)
FR (1) FR2592693B1 (en)
GB (1) GB2185915B (en)
IT (1) IT1215326B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4802807A (en) * 1988-04-14 1989-02-07 Illinois Tool Works Inc. Threaded fastener
EP1764519A1 (en) * 2005-09-20 2007-03-21 Taiwan Shan Yin International Co., Ltd. Screw with multiple cutting ridges in end section
DE102007052152A1 (en) 2007-10-31 2009-05-07 Robert Bosch Gmbh navigation system
TW201350690A (en) * 2012-06-12 2013-12-16 Yuan-Qi Li Screw drill tail structure
JP6282160B2 (en) * 2014-04-07 2018-02-21 北村精工株式会社 Drill screw
TW201716697A (en) * 2015-11-11 2017-05-16 xiao-wen Huang Self-tapping screw drilling tail structure for enhancing drilling capability and speed of drill/cut edges to achieve high screwing speed and labor saving

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB940206A (en) * 1960-06-14 1963-10-23 Brooke Tool Mfg Company Ltd Improvements relating to drills
US3199381A (en) * 1963-03-04 1965-08-10 Bruce A Mackey Twist drill
GB2016314A (en) * 1978-01-18 1979-09-26 Yamashina Seikosho Kk Drill screw

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD72426A (en) *
US3463045A (en) * 1966-05-10 1969-08-26 Illinois Tool Works Drilling screw
US3395603A (en) * 1966-09-13 1968-08-06 Parker Kaion Corp Rotary threaded fasteners
FR1536635A (en) * 1966-09-13 1968-08-16 Parker Kalon Corp Rotary threaded fastener or screw
US3550255A (en) * 1968-07-05 1970-12-29 Parker Kalon Corp Method of making rotary threaded fasteners
AT350334B (en) * 1977-01-19 1979-05-25 Sfs Stadler Ag SELF-DRILLING SCREW
US4295768A (en) * 1979-09-21 1981-10-20 Usm Corporation Chip breaker screws
GB2100628B (en) * 1981-06-25 1985-04-11 Shinjo Seisakusho Yk A drill screw
NZ202991A (en) * 1982-02-05 1985-11-08 Usm Corp Rotary threaded drilling and thread-forming screw with radiused drag surfaces in drilling portion
JPS597046A (en) * 1982-07-03 1984-01-14 日東紡績株式会社 Synthetic-resin laminated board enabling sharp cutting by laser beam
JPS6024981U (en) * 1983-07-27 1985-02-20 小島　隆男 intake and exhaust valve

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB940206A (en) * 1960-06-14 1963-10-23 Brooke Tool Mfg Company Ltd Improvements relating to drills
US3199381A (en) * 1963-03-04 1965-08-10 Bruce A Mackey Twist drill
GB2016314A (en) * 1978-01-18 1979-09-26 Yamashina Seikosho Kk Drill screw

Also Published As

Publication number Publication date
DE3700499A1 (en) 1987-07-16
FR2592693B1 (en) 1991-05-31
CH672171A5 (en) 1989-10-31
AU586060B2 (en) 1989-06-29
IT8719016A0 (en) 1987-01-08
AU6716087A (en) 1987-07-16
IT1215326B (en) 1990-02-08
GB2185915A (en) 1987-08-05
JPS62242111A (en) 1987-10-22
CA1285798C (en) 1991-07-09
GB8700157D0 (en) 1987-02-11
DE3700499C2 (en) 1996-07-11
FR2592693A1 (en) 1987-07-10

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050106