FR660859A - Perfectionnement aux têtes de vis - Google Patents

Perfectionnement aux têtes de vis

Info

Publication number
FR660859A
FR660859A FR660859DA FR660859A FR 660859 A FR660859 A FR 660859A FR 660859D A FR660859D A FR 660859DA FR 660859 A FR660859 A FR 660859A
Authority
FR
France
Prior art keywords
improvement
screw heads
heads
screw
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
Other languages
English (en)
Inventor
Watson Hartley
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 filed Critical
Application granted granted Critical
Publication of FR660859A publication Critical patent/FR660859A/fr
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
    • F16B23/0015—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 rectangular, e.g. one-slot head

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Plates (AREA)
  • Joining Of Building Structures In Genera (AREA)
FR660859D 1927-09-23 1928-09-22 Perfectionnement aux têtes de vis Expired FR660859A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2508527A GB301580A (en) 1927-09-23 1927-09-23 Improvements in and relating to screw heads

Publications (1)

Publication Number Publication Date
FR660859A true FR660859A (fr) 1929-07-18

Family

ID=10221946

Family Applications (1)

Application Number Title Priority Date Filing Date
FR660859D Expired FR660859A (fr) 1927-09-23 1928-09-22 Perfectionnement aux têtes de vis

Country Status (3)

Country Link
BE (1) BE354385A (fr)
FR (1) FR660859A (fr)
GB (1) GB301580A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2098693B (en) * 1981-03-30 1984-09-12 Isotech Consultants Inc Screw driving socket and a punch for forming the socket
CN103790916A (zh) * 2014-02-20 2014-05-14 陈文丽 一种螺丝

Also Published As

Publication number Publication date
GB301580A (en) 1928-12-06
BE354385A (fr)

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