GB2129348B - Screws - Google Patents

Screws

Info

Publication number
GB2129348B
GB2129348B GB08225602A GB8225602A GB2129348B GB 2129348 B GB2129348 B GB 2129348B GB 08225602 A GB08225602 A GB 08225602A GB 8225602 A GB8225602 A GB 8225602A GB 2129348 B GB2129348 B GB 2129348B
Authority
GB
United Kingdom
Prior art keywords
screws
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
GB08225602A
Other versions
GB2129348A (en
Inventor
Erich Rock
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.)
Julius Blum GmbH
Original Assignee
Julius Blum GmbH
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 Julius Blum GmbH filed Critical Julius Blum GmbH
Priority to GB08225602A priority Critical patent/GB2129348B/en
Publication of GB2129348A publication Critical patent/GB2129348A/en
Application granted granted Critical
Publication of GB2129348B publication Critical patent/GB2129348B/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
    • F16B23/00—Specially shaped nuts or heads of bolts or screws for rotations by a tool
    • F16B23/0007—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool
    • F16B23/0023—Specially shaped nuts or heads of bolts or screws for rotations by a tool characterised by the shape of the recess or the protrusion engaging the tool substantially cross-shaped
    • 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
    • B21K1/44—Making machine elements bolts, studs, or the like
    • B21K1/46—Making machine elements bolts, studs, or the like with heads
    • B21K1/463—Making machine elements bolts, studs, or the like with heads with recessed heads

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
GB08225602A 1982-09-08 1982-09-08 Screws Expired GB2129348B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08225602A GB2129348B (en) 1982-09-08 1982-09-08 Screws

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08225602A GB2129348B (en) 1982-09-08 1982-09-08 Screws

Publications (2)

Publication Number Publication Date
GB2129348A GB2129348A (en) 1984-05-16
GB2129348B true GB2129348B (en) 1986-09-24

Family

ID=10532767

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08225602A Expired GB2129348B (en) 1982-09-08 1982-09-08 Screws

Country Status (1)

Country Link
GB (1) GB2129348B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3709513A1 (en) * 1987-03-23 1988-10-13 Salice Arturo Spa METHOD FOR PRODUCING A SCREW WITH A SCREW HEAD WITH CROSS-SLOTS
GB2445546A (en) * 2007-01-09 2008-07-16 Paul John Owen Screw and driver bit
FR2929146B1 (en) * 2008-03-25 2010-05-28 Jacques Henri Georges Lutrat METHOD OF SIMPLICALLY AND ECONOMICALLY MAKING SCREW HEADS OR EXTRACTIBLE BOLTS

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2986752A (en) * 1958-09-23 1961-06-06 Gen Am Transport Methods of forming by punching a cruciform recess in a headed fastener
NL133564C (en) * 1961-05-26
US3945071A (en) * 1974-01-21 1976-03-23 Phillips Screw Company Apparatus for cold forming recesses in the heads of screw fasteners
US4033003A (en) * 1975-11-07 1977-07-05 Briles Manufacturing Head forming method

Also Published As

Publication number Publication date
GB2129348A (en) 1984-05-16

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Legal Events

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

Effective date: 19960908