EP0110873A1 - Ameliorations relatives a des cles a ecrous - Google Patents

Ameliorations relatives a des cles a ecrous

Info

Publication number
EP0110873A1
EP0110873A1 EP19820901574 EP82901574A EP0110873A1 EP 0110873 A1 EP0110873 A1 EP 0110873A1 EP 19820901574 EP19820901574 EP 19820901574 EP 82901574 A EP82901574 A EP 82901574A EP 0110873 A1 EP0110873 A1 EP 0110873A1
Authority
EP
European Patent Office
Prior art keywords
rotatable member
reciprocation
handle
spanner according
drive means
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Withdrawn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
EP19820901574
Other languages
German (de)
English (en)
Inventor
Dennis John Paul
Lloyd James Speedy
James Te Hira Babington
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0110873A1 publication Critical patent/EP0110873A1/fr
Withdrawn legal-status Critical Current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
    • B25B13/00—Spanners; Wrenches
    • B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
    • B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
    • B25B13/467—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member which are gear-operated
    • 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
    • B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
    • 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
    • B25B17/00—Hand-driven gear-operated wrenches or screwdrivers

Definitions

  • This invention relates to a spanner, generally a ratchet spanner.
  • Spanners are used to remove nuts from bolts.
  • the spanner may be provided with a ratchet mechanism which allows the nut to be removed by series of relatively short turning movements of the spanner. However, this is still a relatively slow way of removing a nut, once loosened.
  • the present invention provides a spanner which comprises a handle, a head attached to one end of said handle, a rotatable member rotatable mounted in the head; reciprocatable drive means for rotating the rotatable member and reciprocation means connected to the drive means, the drive means having at one end thereof a set of assymetrical teeth adapted to engage and rotate said rotatable member during movements in one direction of said reciprocation but not in the other direction of reciprocation.
  • the spanner further includes reversing means to enable the direction of rotation of the rotatable member to be reversed. This is done by diametrically changing the side of the rotatable member which is engaged by the set of teeth.
  • the drive means comprises a bifurcated member, the rotatable member being insertable between the arms of the bifurcated member, the reciprocation means being operable to cause reciprocal movement of the bifurcated member substantially parallel to the axis of said arms, the inner surface of each arm having teeth to catch the rotatable member and thereby rotate the rotatable member when moved in one direction and not catch the rotatable member when moved in the other direction.
  • Each set of teeth is arranged to catch the rotatable member in a respective one of the directions of reciprocating movement.
  • the assymetrical teeth each have an abutment surface on one side for engaging the rotatable member, and a ramp surface on an opposed side for sliding over and not engaging the rotatable member.
  • the direction of assymetry of all the teeth in a set is always the same.
  • the handle is hollow and the drive means comprises a shank in the handle attached at one end to the bifurcated member.
  • the reciprocation means may comprise a lever passing through a hole in the handle and pivotal on the handle, the lever being engaged with the shank so that pivotal movement of the lever causes reciprocation of the shank.
  • the lever includes a bifurcated end within the handle, the arm of the bifurcated end being positioned in a circumferential groove in the shank.
  • the reversing means comprise means to rotate the shank and bifurcated member through 180 degrees about the longitudinal axis thereof.
  • An open- ended housing may be provided about the shank, an extension of the said housing passing through an aperture in the end of said handle so that the housing may be rotated by manually rotating the extension and connection means (for example, a spring) being provided between said shank and said housing.
  • the housing has an enlarged internal bore and the shank has an enlargement on the end thereof, a spring being operative between the enlargement and a flange provided around the open entrance to the housing.
  • the reciprocation means may be a conventional pneumatic or hydraulic reciprocating mechanism, such as those used in drills, chisels and hammers.
  • a spanner (1) is provided with a head (2) and handle (3) .
  • the head (2) comprises a ratchet mechanism and a socket for a nut, or other type of spanner according to the task to be performed.
  • a rotatable member (4) is rotatably mounted in the head (2) .
  • On the rotatable member (4) is mounted the ratchet mechanism (not shown) .
  • the rotatable member has logit dinal ribs (20) on the part within the head.
  • Drive means are provided to rotate the rotatable member and in the embodiment shown in the drawings the drive means comprise a reciprocatable bifurcated member (5) having means on inner surfaces of the arms thereof to engage the rotatable member.
  • These means comprise two sets of oppositely inclined asymmetrical teeth (19) which are arranged such that forward movement of the bifurcated member (5) will cause the teeth on one arm to engage ribs (20) and rotate the rotatable member (4) , whilst backward movement in the other direction will cause the teeth on the other arm to rotate the rotatable member in the same sense.
  • one set of teeth (19) at a time bear against the ribs (20) and so cause rotation, the teeth on the other side sliding over the ribs.
  • the distance apart of the bifurcated arms and length of the teeth are of a suitable size to allow this to happen.
  • the rotatable member becomes released by the teeth at the inner end of the bifurcated member.
  • the drive means comprise a .shank (6) which may be reciprocated by operation of a lever (7) passing through an aperture (8) in the wall of the housing and pivoted therein by a pivot pin (9) .
  • the lever (7) terminates in a bifurcated member (10) or alternatively there may be only one arm.
  • the free end of the lever (7) engages in a circumferential groove (11) in the shank (6) .
  • the lever (7) is shaped on the outer surface to provide a handle (12) which may be readily gripped in the hand along with the handle of the spanner.
  • the bifurcated member (5) can be turned upside down, so that the rotatable member (4) may be rotated in the opposite direction, by turning the shank (6) through 180 .
  • the shank (6) has an enlarged end (16) and a compression spring (17) is fitted between the end (16) and an inwardly directed flange (18) which defines the entrance to the housing.
  • This spring causes some connection between the shank (6) and the housing (13) so that rotation of the knob (15) will rotate the housing and thereby the shank (6) and bifurcated member (5) .
  • the spring (17) also returns the shank (6) to a rest position after pressing down of the handle (12) .
  • peripheral elements may be associated with the construction.
  • operation of the spanner can be caused to deposit a small amount of lubricating fluid onto a nut being withdrawn.
  • the spanner may be used as follows: The spanner is used initially in the normal manner to loosen a nut, generally by employing the spanner ratchet mechanism, however once loose, the nut can be readily removed by operating the lever (7) so as to cause reciprocating movement of the bifurcated member (5) . This reciprocation rotates the rotatable member (4) and thereby rotates the spanner jaws and nut. The rotation is relatively rapid and thus enables a loosened nut to be withdrawn rapidly from a bolt without substantial movement of the handle of the spanner.
  • a spanner which has the advantage that a nut, once free, can be readily removed from a bolt without substantial rotation of the handle part of the spanner.
  • the spanner finds application in all fields of engineering where nuts must be removed from bolts.

Abstract

Clés à écrous permettant le dévissage rapide et aisé d'écrous desserrés. La clé (1) possède un manche à actionnement manuel (12) qui provoque, lorsqu'on le serre dans la main, le mouvement alternatif de l'arbre (6) et de l'organe bifurqué (5). Des dents asymétriques (19) sur l'organe bifurqué engagent et font tourner l'organe (4). L'organe (4) fait partie du mécanisme d'une clé à cliquet auquel est fixée généralement une douille permettant de dévisser les écrous des boulons. Une fois que l'écrou a été desserré de la manière conventionnelle, le serrage manuel répété du manche (12) provoque la rotation rapide de la douille et le dévissage de l'écrou.
EP19820901574 1982-05-27 1982-05-27 Ameliorations relatives a des cles a ecrous Withdrawn EP0110873A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/AU1982/000083 WO1983004207A1 (fr) 1982-05-27 1982-05-27 Ameliorations relatives a des cles a ecrous

Publications (1)

Publication Number Publication Date
EP0110873A1 true EP0110873A1 (fr) 1984-06-20

Family

ID=3760561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820901574 Withdrawn EP0110873A1 (fr) 1982-05-27 1982-05-27 Ameliorations relatives a des cles a ecrous

Country Status (3)

Country Link
EP (1) EP0110873A1 (fr)
AU (1) AU8458282A (fr)
WO (1) WO1983004207A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3736109C1 (de) * 1987-10-26 1989-03-02 Richard Schumm Ratschenschluessel
DE4430781C2 (de) * 1994-08-30 1996-07-11 Zacher Karl Heinz Ratschenschlüssel mit einem Antrieb eines mit einer Innenmehrkantausnehmung versehenen Zahnkranzes
GB2394435B (en) * 2002-10-24 2005-12-14 Nuts And Bolts Fastener device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1913669A (en) * 1931-09-24 1933-06-13 Joseph O Heald Ratchet wrench
US2817257A (en) * 1956-05-18 1957-12-24 Thomas J Kniser Ratchet wrench with supplemental head turning means
FR1505542A (fr) * 1966-11-03 1967-12-15 Alsacienne Atom Perfectionnement aux appareils porte-outils commandables à distance
FR2214558B3 (fr) * 1973-01-19 1976-11-05 Bieganski Zdzislaw

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8304207A1 *

Also Published As

Publication number Publication date
AU8458282A (en) 1983-12-16
WO1983004207A1 (fr) 1983-12-08

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Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

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Designated state(s): DE FR GB SE

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19840428

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BABINGTON, JAMES TE HIRA

Inventor name: SPEEDY, LLOYD JAMES

Inventor name: PAUL, DENNIS JOHN