EP0699117B1 - Precision pliers - Google Patents

Precision pliers Download PDF

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Publication number
EP0699117B1
EP0699117B1 EP95907162A EP95907162A EP0699117B1 EP 0699117 B1 EP0699117 B1 EP 0699117B1 EP 95907162 A EP95907162 A EP 95907162A EP 95907162 A EP95907162 A EP 95907162A EP 0699117 B1 EP0699117 B1 EP 0699117B1
Authority
EP
European Patent Office
Prior art keywords
pliers
handles
covers
shanks
front portion
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 - Lifetime
Application number
EP95907162A
Other languages
German (de)
French (fr)
Other versions
EP0699117A1 (en
Inventor
Conny Jansson
Hans Himbert
Hakan Bergqvist
Olle Bobjer
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.)
Kapman AB
Original Assignee
Sandvik AB
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 Sandvik AB filed Critical Sandvik AB
Publication of EP0699117A1 publication Critical patent/EP0699117A1/en
Application granted granted Critical
Publication of EP0699117B1 publication Critical patent/EP0699117B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/10—Handle constructions characterised by material or shape
    • B25G1/102—Handle constructions characterised by material or shape the shape being specially adapted to facilitate handling or improve grip

Definitions

  • pliers are used to hold and orient small items, especially during assembly and service of instruments, electronics and precision mechanics, also in surgery and cosmetic treatments.
  • a pliers according to the preamble of claim 1 is known, which is constructed with a view to the anatomy and anthropometry of the human hand for facilitating its manipulation.
  • the invention concerns a new configuration of the handles of the pliers to make it possible to handle and orient small items with higher precision than with previously known pliers.
  • figure 1 shows a side view of a pliers according to the invention
  • figure 2 shows in a front view how the pliers is held in the hand during high precision work.
  • a pliers according to the invention is shown in figure 1 and comprises two shanks hingedly connected at a joint (13).
  • the shanks are shaped as jaws (11,12) and behind the hinge as handles with covers of soft polymer material.
  • the jaws (11,12) may be different according to their use, round, flat, curved or sharp edged.
  • the handles consist of two portions, a rear portion (16,17) to be gripped by the palm of the hand, and a front portion (14,15) to be gripped with the thumb and index fingers.
  • the handles are curved to have a convex outer contour, and to let the widest span for a closed pliers, measured on the outside of the handles, be close to the center of the rear portion, not at the rear end (20,21) of it.
  • the front portion (14,15) is so shaped that when the pliers is closed the outsides (18,19) of the handle covers together form at least half of a rotational surface, preferably cylindrical or conical, which can be gripped with the thumb and index finger as shown in figure 2.
  • the span measured on the outsides shall be smaller in the front portion then in the rear portion.
  • the outsides (18,19) will each form a circular arc of at least 90 degrees, preferably 120 degrees, and when the pliers is closed by squeezing the handles, the arcs will have substantially the same center, making the span in this section substantially equal to the diameter of the arcs.
  • the pliers can be easily twirled between the thumb and the index finger to orient the shanks and any item held between the jaws in any desired angular position.
  • the force between the thumb and the index finger will not cause any resulting torque on the pliers or the item.
  • a corresponding motion with a pliers according to prior art where the handle covers do not form any cylindrical or conical front portion (14,15) will require either changing the grip of the palm, or performing the motion by rotating he whole hand, neither of which can be done with high precision.
  • a pliers according to the invention will have handle covers with great lateral width, at least 70 % of the gripping span in the front portion when the pliers is closed.
  • a pliers according to the invention can be combined with return springs or locking means of known types.

Abstract

Pliers comprising two shanks connected at a joint, where the shanks behind the joint being shaped as handles with covers of polymeric material, the outsides (18, 19) of the covers in a front portion (14, 15) forming when the handles are squeezed together a major part of a rotational, preferably cylindrical or conical surface with smaller span than the rear portion (16, 17) of the handles.

Description

  • Various types of pliers are used to hold and orient small items, especially during assembly and service of instruments, electronics and precision mechanics, also in surgery and cosmetic treatments.
  • For instance from US-A-4 829 858 a pliers according to the preamble of claim 1 is known, which is constructed with a view to the anatomy and anthropometry of the human hand for facilitating its manipulation.
  • The invention concerns a new configuration of the handles of the pliers to make it possible to handle and orient small items with higher precision than with previously known pliers.
  • This object is achieved by providing for a pliers as defined by claim 1.
    • Description
  • An embodiment of the invention is described with reference to the figures, where figure 1 shows a side view of a pliers according to the invention, and figure 2 shows in a front view how the pliers is held in the hand during high precision work.
  • A pliers according to the invention is shown in figure 1 and comprises two shanks hingedly connected at a joint (13). In front of the joint the shanks are shaped as jaws (11,12) and behind the hinge as handles with covers of soft polymer material. The jaws (11,12) may be different according to their use, round, flat, curved or sharp edged. The handles consist of two portions, a rear portion (16,17) to be gripped by the palm of the hand, and a front portion (14,15) to be gripped with the thumb and index fingers.
  • Within the rear portion (16,17) the handles are curved to have a convex outer contour, and to let the widest span for a closed pliers, measured on the outside of the handles, be close to the center of the rear portion, not at the rear end (20,21) of it.
  • The front portion (14,15) is so shaped that when the pliers is closed the outsides (18,19) of the handle covers together form at least half of a rotational surface, preferably cylindrical or conical, which can be gripped with the thumb and index finger as shown in figure 2. The span measured on the outsides shall be smaller in the front portion then in the rear portion. In a cross-section through the front portion the outsides (18,19) will each form a circular arc of at least 90 degrees, preferably 120 degrees, and when the pliers is closed by squeezing the handles, the arcs will have substantially the same center, making the span in this section substantially equal to the diameter of the arcs. The effect of this is that the pliers can be easily twirled between the thumb and the index finger to orient the shanks and any item held between the jaws in any desired angular position. The force between the thumb and the index finger will not cause any resulting torque on the pliers or the item.
  • A corresponding motion with a pliers according to prior art where the handle covers do not form any cylindrical or conical front portion (14,15) will require either changing the grip of the palm, or performing the motion by rotating he whole hand, neither of which can be done with high precision. Compared to prior art, a pliers according to the invention will have handle covers with great lateral width, at least 70 % of the gripping span in the front portion when the pliers is closed.
  • A pliers according to the invention can be combined with return springs or locking means of known types.

Claims (4)

  1. Pliers comprising two shanks hingedly connected at a joint (13), with the shanks behind the joint shaped as handles with covers of polymeric material and in a rear portion having a convex outer contour, characterized by the outsides (18,19) of the handle covers in a front portion (14,15) forming part of a single surface of revolution about the longitudinal axis of the pliers when the pliers is closed by squeezing the handles.
  2. Pliers according to claim 1, characterized by the surface of revolution being cylindrical or conical.
  3. Pliers according to claim 1, characterized by the outsides (18,19) of the covers in a cross-section through the front portion being circular arcs, each at least 90 degrees.
  4. Pliers according to claim 1, characterized by the lateral width of the handle covers in a front portion (14,15) being larger than 70 % of the span between the outside contours in the same portion when the shanks are squeezed together.
EP95907162A 1994-03-16 1994-12-08 Precision pliers Expired - Lifetime EP0699117B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9400878 1994-03-16
SE9400878A SE501598C2 (en) 1994-03-16 1994-03-16 precision pliers
PCT/SE1994/001187 WO1995024993A1 (en) 1994-03-16 1994-12-08 Precision pliers

Publications (2)

Publication Number Publication Date
EP0699117A1 EP0699117A1 (en) 1996-03-06
EP0699117B1 true EP0699117B1 (en) 1997-08-27

Family

ID=20393291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95907162A Expired - Lifetime EP0699117B1 (en) 1994-03-16 1994-12-08 Precision pliers

Country Status (8)

Country Link
EP (1) EP0699117B1 (en)
JP (1) JPH09500835A (en)
AT (1) ATE157294T1 (en)
DE (1) DE69405227T2 (en)
FI (1) FI103484B1 (en)
NO (1) NO179166C (en)
SE (1) SE501598C2 (en)
WO (1) WO1995024993A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20001498U1 (en) * 2000-01-27 2001-06-13 Wolfcraft Gmbh Clamp with soft plastic covered grip zone
RU182838U1 (en) * 2017-10-11 2018-09-04 Валерий Иванович Спрыгин Articulated Lip Instrument

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3545411A1 (en) * 1985-12-20 1987-06-25 Schraubenwerke Gaisbach Gmbh & ERGONOMICALLY IMPROVED COMBINE PLIERS

Also Published As

Publication number Publication date
FI103484B (en) 1999-07-15
WO1995024993A1 (en) 1995-09-21
SE9400878D0 (en) 1994-03-16
SE9400878L (en) 1995-03-27
FI955499A0 (en) 1995-11-15
EP0699117A1 (en) 1996-03-06
SE501598C2 (en) 1995-03-27
ATE157294T1 (en) 1997-09-15
DE69405227T2 (en) 1998-01-02
JPH09500835A (en) 1997-01-28
NO179166B (en) 1996-05-13
NO954617D0 (en) 1995-11-15
FI103484B1 (en) 1999-07-15
FI955499A (en) 1995-11-30
NO954617L (en) 1995-11-16
DE69405227D1 (en) 1997-10-02
NO179166C (en) 1996-08-21

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