DK0453976T3 - screwdriver blade - Google Patents

screwdriver blade

Info

Publication number
DK0453976T3
DK0453976T3 DK91106288.3T DK91106288T DK0453976T3 DK 0453976 T3 DK0453976 T3 DK 0453976T3 DK 91106288 T DK91106288 T DK 91106288T DK 0453976 T3 DK0453976 T3 DK 0453976T3
Authority
DK
Denmark
Prior art keywords
head
cross cut
handled
thickness
broader
Prior art date
Application number
DK91106288.3T
Other languages
Danish (da)
Inventor
Ernst Zaech
Original Assignee
Asea Brown Boveri
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 Asea Brown Boveri filed Critical Asea Brown Boveri
Application granted granted Critical
Publication of DK0453976T3 publication Critical patent/DK0453976T3/en

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
    • B25B15/007—Screwdrivers characterised by material or shape of the tool bit characterised by cross-section with blade of flat or substantially flat cross-section

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Connection Of Plates (AREA)
  • Drilling Tools (AREA)

Abstract

To cover a broad range when tightening and loosening screws (S) with a cross cut head, a screwdriver blade (1) is proposed, in which at least one of the two faces of the blade exhibits a profiled shape, which comprises a central section (A), whose width (A1) and thickness (A2) corresponds to the size of the cross cut of the head of the smallest screw (S) to be handled. A broader section (B1, B2; C1, C2; D1, D2) is formed, starting from this central section (A) and opposite one another, whose profile is either an inclined plane or a convex curve, the useful width (E) and thickness (F) of these broader sections corresponding to the cross cut size of the head of the largest screw (S) to be handled. <IMAGE>
DK91106288.3T 1990-04-24 1991-04-19 screwdriver blade DK0453976T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1380/90A CH683078A5 (en) 1990-04-24 1990-04-24 Screwdriver blade.

Publications (1)

Publication Number Publication Date
DK0453976T3 true DK0453976T3 (en) 1996-04-09

Family

ID=4209080

Family Applications (1)

Application Number Title Priority Date Filing Date
DK91106288.3T DK0453976T3 (en) 1990-04-24 1991-04-19 screwdriver blade

Country Status (7)

Country Link
EP (1) EP0453976B1 (en)
AT (1) ATE130235T1 (en)
CH (1) CH683078A5 (en)
DE (1) DE59106883D1 (en)
DK (1) DK0453976T3 (en)
ES (1) ES2080850T3 (en)
GR (1) GR3018699T3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5269209A (en) * 1992-10-20 1993-12-14 Baker David R Curvilinear drive screwdriver and screw
GB2386854A (en) * 2002-02-16 2003-10-01 Steven Broadbelt Diamond Drive Screwdriver System

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR440585A (en) * 1911-06-16 1912-07-13 Alfred H Eicken Double concave blade screwdriver
GB101151A (en) * 1915-08-12 1917-03-29 Henry Cole William
US1476653A (en) * 1922-05-17 1923-12-04 Joseph R Stanton Screw driver
US4016912A (en) * 1975-12-15 1977-04-12 St Amour Lionel Screwdriver for slotted head screw
US4680995A (en) * 1986-02-24 1987-07-21 Naphs, Inc. Screwdriver

Also Published As

Publication number Publication date
ES2080850T3 (en) 1996-02-16
CH683078A5 (en) 1994-01-14
DE59106883D1 (en) 1995-12-21
EP0453976B1 (en) 1995-11-15
GR3018699T3 (en) 1996-04-30
ATE130235T1 (en) 1995-12-15
EP0453976A1 (en) 1991-10-30

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