CH281532A - Vis. - Google Patents

Vis.

Info

Publication number
CH281532A
CH281532A CH281532DA CH281532A CH 281532 A CH281532 A CH 281532A CH 281532D A CH281532D A CH 281532DA CH 281532 A CH281532 A CH 281532A
Authority
CH
Switzerland
Prior art keywords
screw
Prior art date
Application number
Other languages
English (en)
Inventor
Guest Keen Nettlefolds Mid Ltd
Original Assignee
Guest Keen & Nettlefolds Ltd
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
Priority claimed from US470671A external-priority patent/US2474994A/en
Application filed by Guest Keen & Nettlefolds Ltd filed Critical Guest Keen & Nettlefolds Ltd
Publication of CH281532A publication Critical patent/CH281532A/fr

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
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00—Screwdrivers
    • B25B15/001—Screwdrivers characterised by material or shape of the tool bit
    • B25B15/004—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section
    • B25B15/005—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with cross- or star-shaped cross-section

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Connection Of Plates (AREA)
CH281532D 1942-12-30 1947-12-24 Vis. CH281532A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US470671A US2474994A (en) 1942-12-30 1942-12-30 Screw socket
US782875A US2507231A (en) 1942-12-30 1947-10-29 Screw driver having cruciform shaped bit

Publications (1)

Publication Number Publication Date
CH281532A true CH281532A (fr) 1952-03-15

Family

ID=27043179

Family Applications (1)

Application Number Title Priority Date Filing Date
CH281532D CH281532A (fr) 1942-12-30 1947-12-24 Vis.

Country Status (7)

Country Link
US (1) US2507231A (fr)
BE (1) BE478339A (fr)
CH (1) CH281532A (fr)
DE (1) DE966464C (fr)
FR (1) FR958075A (fr)
GB (1) GB663163A (fr)
NL (1) NL74183C (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3108623A (en) * 1959-05-05 1963-10-29 Phillips Screw Co Tools for recessed head fasteners
US3187790A (en) * 1959-05-18 1965-06-08 Hi Shear Rivet Tool Company Screw and screw driver coupling
NL276619A (fr) * 1961-03-31
US4998454A (en) * 1988-11-14 1991-03-12 Black & Decker Inc. Screwdriver bit for phillips-head fasteners
USD980707S1 (en) * 2021-02-15 2023-03-14 Min Woo Lee Bolt

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10612C (de) * P. SCHNEITLER in Berlin N., Müllerstrafse 179B Neuerungen an Schraubenköpfen und zugehörigen Schraubenziehern
NL42923C (fr) * 1934-07-03
US2046838A (en) * 1934-07-03 1936-07-07 Phillips Screw Co Screw driver
US2046840A (en) * 1935-01-15 1936-07-07 Phillips Screw Co Screw driver
US2066484A (en) * 1935-01-15 1937-01-05 Philips Screw Company Screw
US2046839A (en) * 1935-01-15 1936-07-07 Phillips Screw Co Screw
US2084078A (en) * 1935-11-15 1937-06-15 American Screw Co Method of making screws
US2084079A (en) * 1935-11-15 1937-06-15 American Screw Co Screw
US2058197A (en) * 1935-12-12 1936-10-20 Maxwell A West Screw

Also Published As

Publication number Publication date
FR958075A (fr) 1950-03-03
BE478339A (fr)
GB663163A (en) 1951-12-19
US2507231A (en) 1950-05-09
NL74183C (fr)
DE966464C (de) 1957-08-08

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