WO2000010773A2 - Cle a fourche a entrainement cannele - Google Patents

Cle a fourche a entrainement cannele Download PDF

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Publication number
WO2000010773A2
WO2000010773A2 PCT/US1999/019246 US9919246W WO0010773A2 WO 2000010773 A2 WO2000010773 A2 WO 2000010773A2 US 9919246 W US9919246 W US 9919246W WO 0010773 A2 WO0010773 A2 WO 0010773A2
Authority
WO
WIPO (PCT)
Prior art keywords
nut
wrench
jaw
drive
face
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.)
Ceased
Application number
PCT/US1999/019246
Other languages
English (en)
Inventor
Ajay Garg
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.)
Stanley Works
Original Assignee
Stanley Works
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 Stanley Works filed Critical Stanley Works
Priority to AU57830/99A priority Critical patent/AU5783099A/en
Publication of WO2000010773A2 publication Critical patent/WO2000010773A2/fr
Anticipated expiration legal-status Critical
Ceased 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
    • B25B13/02—Spanners; Wrenches with rigid jaws
    • B25B13/08—Spanners; Wrenches with rigid jaws of open jaw type

Definitions

  • the present invention relates generally to wrenches and, more particularly, to open end wrenches having improved driving faces
  • the wrench head has two jaws which define a U-shaped opening
  • Each jaw has a drive face which is a straight, flat surface
  • the d ⁇ ve faces are parallel, and they are spaced a sufficient distance apart such that a nut may be inserted in the U-shaped opening
  • a nut may be loosened or tightened by sliding the jaws of the conventional open end wrench over the sides of the nut and then rotating the wrench head in a desired direction
  • the distance between the drive faces of the jaws must be larger than the distance between parallel sides of the nut to be driven
  • at least a slight clearance must be provided between each drive face of the jaws and the respective side of the nut to be driven
  • the wrench head will rotate a few degrees relative to the nut when a user applies torque to the
  • Preferred embodiments of the open end wrenches of the present invention have d ⁇ ve faces that do not make contact with the corners of a predetermined nut when torque is applied by the wrench head in the drive position
  • preferred embodiments of the open end wrenches of the present invention do not deform the corners of predetermined nuts dunng tightening or loosening
  • a preferred embodiment of an open end wrench of the present invention is adapted to rotate a hexagonal nut having equal, flat sides without deforming any of the corners of the nut
  • a preferred embodiment of an open end wrench includes a lever arm and a head The head is joined to the lever arm The head has a first jaw that may be integrally joined to a second jaw Each of the jaws has an open end and a drive face The drive face of the first jaw opposes the drive face of the second jaw In addition, the drive face of the first jaw is joined to the drive face of said second jaw by a rear face
  • Each of the d ⁇ ve faces has a plurality of contact surfaces Each contact surface is a convex curve that protrudes toward the opposing drive face Each contact surface has a peak The distance between opposing peaks may be about equal for each set of opposing peaks and only slightly greater than the distance between opposing sides of the nut
  • the jaws of the wrench may be slid over the nut such that a corner of the nut is placed in contact with the rear face When
  • Figure 1 is a partial perspective view of a first preferred embodiment of a wrench of the present invention
  • Figure 2 is a partial plan view of the wrench shown in Figure 1
  • Figure 3 is a partial end elevation view of the wrench shown in Figure 1
  • Figure 4 is a partial side elevation view of the wrench shown in Figure 1
  • Figure 5 is a partial perspective view of a second preferred embodiment of a wrench of the present invention
  • Figure 6 is a partial plan view of the wrench shown in Figure 5
  • Figure 7 is a partial end elevation view of the wrench shown m Figure 5
  • Figure 8 is a partial side elevation view of the wrench shown in Figure 5
  • Figure 9 is a partial perspective view of a third preferred embodiment of a wrench of the present invention
  • Figure 10 is a partial plan view of the wrench shown in Figure 9
  • Figure 11 is a partial end elevation view of the wrench shown in Figure 9
  • Figure 12 is a partial side elevation view of the wrench shown in Figure 9
  • Figure 13 is a partial plan view with preferred dimensions of a fourth preferred embodiment of a wrench of the present invention
  • Figure 14 is a partial plan view with preferred dimensions of a fifth preferred embodiment of a wrench of the present invention.
  • Figure 15 is a partial plan view with preferred dimensions of a sixth preferred embodiment of a wrench of the present invention DETAILED DESCRIPTION OF PREFERRED EMBODIMENTf S
  • the present invention is directed to open end wrenches having improved driving faces
  • a preferred embodiment of the wrenches of the present invention will be described with reference to Figures 1 through 4
  • Figures 1 through 4 illustrate an open end wrench 20
  • the wrench 20 has a lever arm 22 and a head 24
  • the head 24 includes a first jaw 26 and a second jaw 28
  • the first jaw 26 is preferably integrally joined to the second jaw 28
  • the first jaw 26 has an open end 30 and a drive face 32
  • the second jaw 28 has an open end 34 and a d ⁇ ve face 36
  • the drive face 32 is joined to the drive face 36 by a rear face 38 It is preferred that the drive face 32 is substantially symmetrical to the drive face 36
  • those skilled in the art should recognize that the present invention may still be achieved even though there may be variations between the d ⁇ ve face 32 and the drive face 36
  • the first jaw 26 and the second jaw 28 are adapted to slide over the flat sides of a nut
  • Each of the d ⁇ ve faces 32, 36 has a plurality of contact surfaces Since the d ⁇ ve face 32 is substantially symmetrical to the d ⁇ ve face 36 in this embodiment, only the d ⁇ ve face 32 will be described with reference to Figures 1 through 4
  • the drive face 32 has contact surfaces 40 and 42 As shown in Figure 2, the contact surfaces 40, 42 are convex curves that protrude toward the opposing drive face 36
  • the contact surface 40 has a peak 44, and the contact surface 42 has a peak 46
  • the distance between opposing peaks is preferably about equal for each set of opposing peaks and only slightly greater than the distance between opposing sides of the nut
  • the distance between opposing peaks may vary slightly for each set of opposing peaks and still accomplish the present invention
  • the wrench 20 is adapted to rotate a hexagonal nut having substantially equal, flat sides
  • the peaks of each d ⁇ ve face 32, 36 are adapted to be substantially adjacent to intermediate portions of respective sides of the nut
  • the wrench 20 may rotate the nut substantially without placing a corner of the nut in contact with either of the d ⁇ ve faces 32, 36
  • Figures 9 through 12 illustrate an embodiment of a wrench 50
  • the wrench 50 is similar to the wrench 20
  • the wrench 50 differs from the wrench 20 in that the d ⁇ ve faces on the open ends of its jaws have deeper concave curves than the drive faces 32, 36 on the open ends 30, 34 of the wrench 20 Nevertheless, the wrench 50 may perform substantially the same function in substantially the same way as the wrench 20 Accordingly, the wrench 50 will not be described with reference to Figure
  • FIGS 5 through 8 illustrate an embodiment of a wrench 60.
  • the wrench 60 has a lever arm 62 and a head 64
  • the head 64 includes a first jaw 66 and a second jaw 68
  • the first jaw 66 is preferably integrally joined to the second jaw 68.
  • the first jaw 66 has an open end 70 and a drive face 72
  • the second jaw 68 has an open end 74 and a drive face 76
  • the drive face 72 is joined to the drive face 76 by a rear face 78 It is preferred that the drive face 72 is substantially symmetrical to the drive face 76
  • those skilled in the art should recognize that the present invention may still be achieved even though there may be variations between the drive face 72 and the drive face 76
  • the first jaw 66 and the second jaw 68 are adapted to slide over the flat sides of a nut.
  • Each of the drive faces 72, 76 has a plurality of contact surfaces Since the drive face 72 is substantially symmetrical to the drive face 76 in this embodiment, only the drive face 72 will be described with reference to Figures 5 through 8
  • the drive face 72 has contact surfaces 80, 82, 84, 86, 88, 90 As shown in Figure 6, the contact surfaces 80, 82, 84, 86, 88, 90 are convex curves that protrude toward the opposing drive face 76.
  • Each contact surface 80, 82, 84, 86, 88, 90 has a respective peak 92, 94, 96, 98, 100, 102
  • the distance between opposing peaks is preferably about equal for each set of opposing peaks and only slightly greater than the distance between opposing sides of the nut
  • the distance between opposing peaks may vary slightly for each set of opposing
  • the wrench 60 is adapted to rotate a hexagonal nut having substantially equal
  • each drive face 72, 76 are adapted to be substantially adjacent to
  • each drive face 72, 76 that are adapted to be substantially adjacent to intermediate portions of respective sides of the nut depends on the length of the sides of the nut and the
  • the wrench 60 may rotate the nut substantially without placing a corner of the nut in contact with either of the drive faces 72, 76 This preferably enables a user to rotate the nut without deforming the corners of the nut
  • Figure 13 shows a wrench 110 which is adapted to rotate a nut 120 without deforming the corners of the nut 120
  • the wrench 110 is similar to the wrench 20 On
  • Figure 15 illustrates a wrench 130 that is similar to the wrench 50 As shown in Figure 15, the wrench 130 is adapted to rotate a nut 140 without deforming
  • Figure 13 shows how to determine the preferred dimensions for a wrench 110
  • Figure 15 shows how to determine the preferred dimensions for a wrench 130
  • the distance between opposing peaks is indicated by an arrow F
  • the distance between adjacent peaks on each drive face is preferably
  • each of the peaks on each drive face may be substantially adjacent to intermediate portions of respective sides of the nut to be driven.
  • Figure 14 shows a wrench 150 which is adapted to rotate a nut 160 without deforming the corners of the nut 160.
  • the wrench 150 is similar to the wrench 60.
  • the distance between opposing peaks of the wrench 150 is indicated by the arrow F.
  • the distance between adjacent peaks on each drive face of the wrench 150 is preferably about 0.13474 times the distance indicated by the arrow F.
  • the distance between any set of adjacent peaks may be any distance so long as (1) at least two of the peaks on each drive face are adapted to be substantially adjacent to intermediate portions of respective sides of an equilateral, hexagonal nut when a corner of the nut is in contact with the rear face and (2) the wrench may rotate the nut without placing a corner of the nut in contact with either of the drive faces when a corner of the nut is placed in contact with the rear face.
  • the wrenches of the present invention are adapted to rotate hexagonal nuts having equal, flat sides. However, those skilled in the art should recognize that the wrenches of the present invention may be utilized to rotate some other shapes of nuts without deforming the corners of the nuts.
  • some embodiments of the wrenches of the present invention may be utilized to rotate different shapes of nuts including, but not limited to, square nuts and/or rectangular nuts.
  • preferred embodiments of the wrenches of the present invention may rotate a nut that is in an intermediate drive position in which a corner of the nut is not in contact with the rear face of the wrench.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

L'invention concerne une clé à fourche permettant de visser un écrou hexagonal prédéterminé présentant des côtés plats de taille égale, sans déformer les angles de cet écrou. Cette clé est pourvue d'un manche et d'une tête solidaires du bras de levier. La tête est pourvue d'une première mâchoire qui peut former une seule pièce avec une seconde mâchoire. Chacune de ces mâchoires est pourvue d'une extrémité ouverte et d'une surface d'entraînement. La surface d'entraînement de la première mâchoire fait face à la surface d'entraînement de la seconde mâchoire. En outre, la surface d'entraînement de la première mâchoire est reliée à la surface d'entraînement de la seconde mâchoire par une surface arrière. Chacune des surfaces d'entraînement est pourvue d'une pluralité de surfaces de contact. Chacune de ces surfaces de contact consiste en une courbe convexe qui se projette vers la surface d'entraînement opposée. Chacune de ces surfaces de contact est pourvue d'un sommet. La distance séparant les sommets opposés peut être à peu près égale pour chaque série de sommets opposés et légèrement supérieure à la distance séparant les côtés opposés de l'écrou. Les mâchoires de la clé peuvent glisser sur l'écrou, de sorte que l'angle de l'écrou vienne en contact avec la surface arrière. Lorsqu'un angle de l'écrou vient en contact avec la surface arrière, les sommets d'au moins deux des surfaces de contact de chaque surface d'entraînement sont sensiblement adjacents à des parties intermédiaires respectives de l'écrou. Dans cette position d'entraînement, la clé permet de visser l'écrou sans placer aucun angle en contact avec aucune des surfaces d'entraînement. L'écrou peut ainsi être vissé sans que ses angles soient déformés.
PCT/US1999/019246 1998-08-21 1999-08-20 Cle a fourche a entrainement cannele Ceased WO2000010773A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU57830/99A AU5783099A (en) 1998-08-21 1999-08-20 Spline drive open end wrench

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13806098A 1998-08-21 1998-08-21
US09/138,060 1998-08-21

Publications (1)

Publication Number Publication Date
WO2000010773A2 true WO2000010773A2 (fr) 2000-03-02

Family

ID=22480255

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/019246 Ceased WO2000010773A2 (fr) 1998-08-21 1999-08-20 Cle a fourche a entrainement cannele

Country Status (2)

Country Link
AU (1) AU5783099A (fr)
WO (1) WO2000010773A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210046617A1 (en) * 2019-08-15 2021-02-18 Robert Doroslovac Adaptable wrench for damage fastener engagement head

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210046617A1 (en) * 2019-08-15 2021-02-18 Robert Doroslovac Adaptable wrench for damage fastener engagement head
US11583980B2 (en) * 2019-08-15 2023-02-21 Bgd Unlimited, Llc Adaptable wrench for damage fastener engagement head

Also Published As

Publication number Publication date
AU5783099A (en) 2000-03-14

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