FR763483A - Perfectionnements aux tournevis, poincons et outils analogues - Google Patents

Perfectionnements aux tournevis, poincons et outils analogues

Info

Publication number
FR763483A
FR763483A FR763483DA FR763483A FR 763483 A FR763483 A FR 763483A FR 763483D A FR763483D A FR 763483DA FR 763483 A FR763483 A FR 763483A
Authority
FR
France
Prior art keywords
screwdrivers
punches
similar tools
tools
similar
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)
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.)
FITZPATRICK CORP
Original Assignee
FITZPATRICK 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 FITZPATRICK CORP filed Critical FITZPATRICK CORP
Application granted granted Critical
Publication of FR763483A publication Critical patent/FR763483A/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
FR763483D 1933-05-09 1933-11-04 Perfectionnements aux tournevis, poincons et outils analogues Expired FR763483A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US427892XA 1933-05-09 1933-05-09

Publications (1)

Publication Number Publication Date
FR763483A true FR763483A (fr) 1934-05-01

Family

ID=21923751

Family Applications (1)

Application Number Title Priority Date Filing Date
FR763483D Expired FR763483A (fr) 1933-05-09 1933-11-04 Perfectionnements aux tournevis, poincons et outils analogues

Country Status (2)

Country Link
FR (1) FR763483A (fr)
GB (1) GB427892A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB575978A (en) * 1943-01-19 1946-03-13 Phillips Screw Co Screws
US3654974A (en) * 1970-04-08 1972-04-11 Bertron Otis Barnes Screw drivers
CN101708603B (zh) * 2009-11-13 2012-06-27 李育骏 螺丝起子的改良结构

Also Published As

Publication number Publication date
GB427892A (en) 1935-04-29

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