EP0308968A1 - Embout de tournevis oscillant - Google Patents

Embout de tournevis oscillant Download PDF

Info

Publication number
EP0308968A1
EP0308968A1 EP88115713A EP88115713A EP0308968A1 EP 0308968 A1 EP0308968 A1 EP 0308968A1 EP 88115713 A EP88115713 A EP 88115713A EP 88115713 A EP88115713 A EP 88115713A EP 0308968 A1 EP0308968 A1 EP 0308968A1
Authority
EP
European Patent Office
Prior art keywords
longitudinal axis
driving surfaces
bit
driving
fastener engaging
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.)
Withdrawn
Application number
EP88115713A
Other languages
German (de)
English (en)
Inventor
Nancy C. Rittmann
Glenn A. Kaufman
Donald D. Grover
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.)
Snap On Inc
Original Assignee
Snap On Tools 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 Snap On Tools Corp filed Critical Snap On Tools Corp
Publication of EP0308968A1 publication Critical patent/EP0308968A1/fr
Withdrawn legal-status Critical Current

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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
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/0007—Connections or joints between tool parts
    • B25B23/0035—Connection means between socket or screwdriver bit and tool
    • 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/48—Spanners; Wrenches for special purposes
    • B25B13/481—Spanners; Wrenches for special purposes for operating in areas having limited access
    • 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
    • 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
    • B25B15/02—Screwdrivers operated by rotating the handle

Definitions

  • This invention relates to a fastener engaging mechanism for use with a driver such as a screwdriver having a hex cavity at one end.
  • the present invention provides a fastener engaging device for use with a driving tool, said fastener engaging device being elongated and having a longitudinal axis, said device being characterized by a plurality of first substan­tially flat driving surfaces equiangularly oriented about the longitudinal axis, a corresponding plurality of second substantially flat driving surfaces equiangularly oriented about the longitudinal axis, said first driving surfaces be­ing inclined at a predetermined angle to the longitudinal axis in a positive direction, said second driving surfaces being inclined at the same predetermined angle to the longi­tudinal axis in a negative direction, and a fastener engag­ ing formation.
  • the present invention also provides a bit for use with a driving tool having a shank, said bit being elongated and having a longitudinal axis, said bit being characterized by a shank engaging end surface generally perpendicular to the longitudinal axis, a plurality of first substantially flat driving surfaces equiangularly oriented about the longi­tudinal axis, a corresponding plurality of second substan­tially flat driving surfaces equiangularly oriented about the longitudinal axis, said first driving surfaces being inclined at a predetermined angle to the longitudinal axis in a posi­tive direction, said second driving surfaces being inclined at the predetermined angle to the longitudinal axis in a negative direction, and a fastener engaging formation at the end opposite said shank engaging surface.
  • a driver 10 having a handle 11.
  • the rear of the handle is hollow and is closed by a removable cap 12.
  • the hollow interior is used to store bits.
  • Extending from the handle 11 is a hollow shank 15.
  • Mounted in the shank 15 is an elongated magnet 18 having a flat end surface 19.
  • a cavity 16 is defined between the surface 19 and the free end 21 of the shank 15.
  • the cavity is defined by six flat bearing surfaces 17. The angle between each adjacent pair of surfaces is 120°.
  • the bit 25 Located in the cavity 16 is a bit 25 incorporating the features of the present invention.
  • the bit includes a body 26 having a flat end surface 27 which in use, as seen in Figure 4, engages the flat end surface 19 of the magnet 18 and is retained thereby.
  • the bit 25 includes a first set 30 of six flat driving surfaces 31 which each terminate at one end of the bit 25 in a chamfered area 32 connecting the driving surfaces 31 with end surface 27.
  • a second set 35 of six flat driving surfaces 36 are respectively aligned with corresponding ones of the driving surfaces 31.
  • the driving surfaces 31 and the driving surfaces 36 intersect at a hexagonal outline 40.
  • the driving surfaces 31 are in­clined at an angle of plus X° with respect to the longitudi­tudinal axis of the body 26.
  • the angle X is 10°.
  • Six driving surfaces 41 respectively extend from the driving surfaces 36 and are parallel to the longitudinal axis of the body 26. The surfaces 41 protrude from the shank 15 when the bit 25 is fully seated in the cavity 16.
  • the bit 25 has a fastener engaging formation 45 which in the illustrated embodiment has a construction to drive a screw.
  • the tool 10 When the fastener to be tightened or loosened is difficult to reach, the tool 10 may be tilted so that the longitudinal axis of the handle 11 and shank 15 is inclined at an angle of approximately X° with respect to the longi­tudinal axis of the bit 25.
  • the two sets of driving sur­faces 31 and 36 cooperate with the complementary shaped bearing surfaces 17 which form the cavity 16 in the shank 15.
  • a pair of opposed driv­ing surfaces 31 and 36 are in contact with opposed bearing surfaces 17 of the cavity 16.
  • the size of the bit 25 with respect to the cavity 16 is such that the hexagonal outline 40 is slightly small­er than the hexagonal outline defined by the bearing sur­faces 17.
  • the bit 25 can be inserted into the cavity 16 and thereafter shifted plus and minus X° to the longi­tudinal axis of the shank 15.
  • Mechanisms other than mag­netism may be used to retain the bit 25 within the cavity 16.
  • the effective length of each of the driving surfaces 31 and 36 is about one half the longitudinal extent of the bearing surfaces 17.
  • the drive surfaces 41 can be engaged by the bearing surfaces 17, so that the tool can be used in the usual way, in a non-tilting mode.
  • the tool can be used in a non-tilting manner by hav­ing the bearing surfaces 17 engage the hexagonal outline 40.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
EP88115713A 1987-09-24 1988-09-23 Embout de tournevis oscillant Withdrawn EP0308968A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10041187A 1987-09-24 1987-09-24
US100411 1987-09-24

Publications (1)

Publication Number Publication Date
EP0308968A1 true EP0308968A1 (fr) 1989-03-29

Family

ID=22279625

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88115713A Withdrawn EP0308968A1 (fr) 1987-09-24 1988-09-23 Embout de tournevis oscillant

Country Status (1)

Country Link
EP (1) EP0308968A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3937527A1 (de) * 1989-11-10 1991-05-16 Mikio Shigematsu Inbusschluessel
WO1994023904A1 (fr) * 1993-04-08 1994-10-27 Habermehl G Lyle Tournevis dote d'un ensemble pointe remplaçable
US5802934A (en) * 1996-11-26 1998-09-08 Northrop Grumman Corporation Angularly adjustable socket wrench
GB2360234A (en) * 2000-03-17 2001-09-19 Martin Maher Improved screw driver bit
EP1157784A1 (fr) * 2000-05-24 2001-11-28 Wiha Werkzeuge Tête d'outil avec pointe pivotable
US7261022B1 (en) * 2006-04-05 2007-08-28 Chih-Ching Hsieh Insertion type hand tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE827780C (de) * 1949-12-20 1952-01-14 Max Forst Steckschluessel mit zum Maul winklig einstellbarem Schaft
US3213719A (en) * 1962-11-01 1965-10-26 Robert C Kloack Rotary driving tool with universal action
US3253626A (en) * 1964-08-03 1966-05-31 Gardner Denver Co Magnetic tool
US3897703A (en) * 1974-02-08 1975-08-05 Olin G Phipps Universal socket

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE827780C (de) * 1949-12-20 1952-01-14 Max Forst Steckschluessel mit zum Maul winklig einstellbarem Schaft
US3213719A (en) * 1962-11-01 1965-10-26 Robert C Kloack Rotary driving tool with universal action
US3253626A (en) * 1964-08-03 1966-05-31 Gardner Denver Co Magnetic tool
US3897703A (en) * 1974-02-08 1975-08-05 Olin G Phipps Universal socket

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3937527A1 (de) * 1989-11-10 1991-05-16 Mikio Shigematsu Inbusschluessel
WO1994023904A1 (fr) * 1993-04-08 1994-10-27 Habermehl G Lyle Tournevis dote d'un ensemble pointe remplaçable
US5531143A (en) * 1993-04-08 1996-07-02 G. Lyle Habermehl Screwdriver with replaceable bit assembly
AU676044B2 (en) * 1993-04-08 1997-02-27 Simpson Strong-Tie Company, Inc. Screwdriver with replaceable bit assembly
US5918512A (en) * 1993-04-08 1999-07-06 G. Lyle Habermehl Replaceable bit screwdriver assembly
US5802934A (en) * 1996-11-26 1998-09-08 Northrop Grumman Corporation Angularly adjustable socket wrench
GB2360234A (en) * 2000-03-17 2001-09-19 Martin Maher Improved screw driver bit
GB2360234B (en) * 2000-03-17 2003-11-26 Martin Maher Improved screw driver bit
EP1157784A1 (fr) * 2000-05-24 2001-11-28 Wiha Werkzeuge Tête d'outil avec pointe pivotable
WO2001089770A1 (fr) * 2000-05-24 2001-11-29 Wiha Werkzeuge Tete receptrice destinee a un outil comportant une pointe d'actionnement plate ou a plusieurs pans
US6575062B2 (en) 2000-05-24 2003-06-10 Wiha Werkzeuge, Willi Hahn Gmbh & Co. Kg Accommodating head for a tool with an actuating tip
US7261022B1 (en) * 2006-04-05 2007-08-28 Chih-Ching Hsieh Insertion type hand tool

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19890930