EP0660784B1 - Compas a pivot de securite - Google Patents

Compas a pivot de securite Download PDF

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Publication number
EP0660784B1
EP0660784B1 EP93919431A EP93919431A EP0660784B1 EP 0660784 B1 EP0660784 B1 EP 0660784B1 EP 93919431 A EP93919431 A EP 93919431A EP 93919431 A EP93919431 A EP 93919431A EP 0660784 B1 EP0660784 B1 EP 0660784B1
Authority
EP
European Patent Office
Prior art keywords
compass
pivot
safety pivot
rounded end
pct
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
EP93919431A
Other languages
German (de)
English (en)
Other versions
EP0660784A1 (fr
Inventor
Etienne Nicolas De Souza
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
Priority claimed from FR9210720A external-priority patent/FR2695352B1/fr
Priority claimed from FR9215000A external-priority patent/FR2699120A1/fr
Application filed by Individual filed Critical Individual
Publication of EP0660784A1 publication Critical patent/EP0660784A1/fr
Application granted granted Critical
Publication of EP0660784B1 publication Critical patent/EP0660784B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00—Circular curve-drawing or like instruments
    • B43L9/16—Features common to compasses, dividers, and callipers
    • B43L9/24—Means for mounting points or writing appliances on legs
    • B43L9/245—Means for mounting points or writing appliances on legs for mounting centering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00—Circular curve-drawing or like instruments
    • B43L9/16—Features common to compasses, dividers, and callipers

Definitions

  • the present invention relates to a safety pivot compass intended to draw arcs of a circle or circles on a support, this compass comprising two articulated branches at their common ends, these branches being produced in two articulated parts, the two lower parts being connected a return mechanism arranged to position them along an axis perpendicular to the support, one of the branches being fitted with a safety pivot and the other with a mechanical pencil or pencil holder.
  • the compasses available on the market all have a pivot in the shape of a sharp point defining the center of the circle or the arc of a circle to be traced. Said tip has the double disadvantage of a manifest danger, in particular for young users and of the perforation of the support, which can constitute a nuisance for the user.
  • the present invention relates to a compass equipped with a safety pivot making it possible to avoid the drawbacks mentioned above while ensuring the stability and the precision of the layout.
  • the present invention retains the ergonomic qualities of the instrument using the compass as it is currently designed, manufactured and widespread in the public.
  • the invention relates to a compass of the kind indicated in the preamble, characterized in that said safety pivot has a rounded end situated at the end of an axis housed in a fixed body, in that said rounded end is movable around said axis relative to to said fixed body, in that it is partially or entirely spherical and in that it is partially or entirely covered with a non-slip surface intended to be in contact with said support to define the center of the arc of circle or circle to draw.
  • the compass (1) consists of two branches (2) and (3), articulated at their common ends in (4). Each branch is terminated by an articulated part (2 ') and (3').
  • a return mechanism here consisting of a rod (10), keeps the lower parts of each branch (2 ') and (3') in a position perpendicular to the support whatever the angle of opening of the compass.
  • One of the branches is equipped with a safety pivot (5) and the other, with a mechanical pencil or pencil holder (6).
  • the pivot comprises a fixed body (9) receiving a movable axis (8), itself terminated by a spherical point (7) covered with a non-slip surface (7 ').
  • the present invention is not limited to the embodiment described above; but extends to any variant or modification obvious to those skilled in the art.
  • the safety pivot as described can be adapted to any other drawing instrument rotating around an axis.

Landscapes

  • Pivots And Pivotal Connections (AREA)
  • Emergency Lowering Means (AREA)
  • Finger-Pressure Massage (AREA)
  • Portable Outdoor Equipment (AREA)
  • Prostheses (AREA)

Description

  • La présente invention concerne un compas à pivot de sécurité destiné à tracer des arcs de cercle ou des cercles sur un support, ce compas comportant deux branches articulées à leurs extrémités communes, ces branches étant réalisées en deux parties articulées, les deux parties inférieures étant reliées à un mécanisme de rappel agencé pour les positionner selon un axe perpendiculaire au support, l'une des branches étant équipée d'un pivot de sécurité et l'autre d'un porte-mine ou porte-crayon.
  • Les compas disponibles dans le commerce sont tous dotés d'un pivot en forme de pointe acérée définissant le centre du cercle ou de l'arc de cercle à tracer. Ladite pointe présente le double inconvénient d'un danger manifeste, en particulier pour les jeunes utilisateurs et de la perforation du support, pouvant constituer une gêne pour l'utilisateur.
  • La présente invention a pour objet un compas équipé d'un pivot de sécurité permettant d'éviter les inconvénients mentionnés ci-dessus tout en assurant la stabilité et la précision du tracé.
  • Il existe certes des inventions destinées à améliorer le maniement et le tracé des compas :
    • soit dans le but de faciliter le travail du mathématicien - telle l'invention de Monsieur GOMEZ BARQUERO (FR-A-1 323 435),
    • soit pour faciliter le tracé de cercles au tableau noir - telles les inventions de Messieurs CHRISTY (US-A-2 074 102) et ZWEIFEL (CH - A - 360 507),
    • soit encore afin de ménager le support comme proposé par l'invention de M. SCHMITZ-NEUBER (DE-A3 219 736).
  • A la différence des inventions citées, le compas à pivot de sécurité conçu notamment dans le souci de la sécurité de l'utilisateur, apporte les innovations suivantes :
    • suppression de la pointe acérée,
    • conception étudiée de la surface de contact du pivot avec le support,
    • mobilité du pivot dans l'axe vertical.
  • On notera également que la présente invention conserve au compas les qualités ergonomiques de l'instrument tel qu'il est actuellement conçu, fabriqué et répandu dans le public.
  • L'invention concerne un compas du genre indiqué en préambule, caractérisé en ce que ledit pivot de sécurité comporte une extrémité arrondie située au bout d'un axe logé dans un corps fixe, en ce que ladite extrémité arrondie est mobile autour dudit axe par rapport audit corps fixe, en ce qu'elle est partiellement ou entièrement sphérique et en ce qu'elle est partiellement ou entièrement recouverte d'une surface antidérapante destinée à être en contact avec ledit support pour définir le centre de l'arc de cercle ou du cercle à tracer.
  • La présente invention et ses avantages apparaîtront mieux dans la description suivante d'un exemple de réalisation, en référence aux dessins annexés, dans lesquels:
    • la figure 1 représente une vue en élévation d'un compas selon l'invention et
    • la figure 2 est une vue en coupe agrandie du pivot de sécurité objet de l'invention.
  • En référence aux figures, le compas (1) se compose de deux branches (2) et (3), articulées à leurs extrémités communes en (4). Chaque branche est terminée par une partie articulée (2') et (3'). Un mécanisme de rappel, ici constitué d'une tige (10), permet de maintenir les parties inférieures de chaque branche (2') et (3') en position perpendiculaire au support quel que soit l'angle d'ouverture du compas. Une des branches est équipée d'un pivot de sécurité (5) et l'autre, d'un porte-mine ou porte-crayon (6). Le pivot comprend un corps fixe (9) recevant un axe mobile (8), lui-même terminé par une pointe sphérique (7) recouverte d'une surface antidérapante (7').
  • La présente invention n'est pas limitée à l'exemple de réalisation décrit ci-dessus ; mais s'étend à toute variante ou modification évidente pour l'homme de l'art. Notamment, le pivot de sécurité tel qu'il est décrit peut être adapté à tout autre instrument de dessin en rotation autour d'un axe.

Claims (1)

  1. Compas (1) à pivot de sécurité destiné à tracer des arcs de cercle ou des cercles sur un support, ce compas comportant deux branches (2, 3) articulées à leurs extrémités communes (4), ces branches étant réalisées en deux parties articulées (2, 2', 3, 3'), les deux parties inférieures (2', 3') étant reliées à un mécanisme de rappel (10) agencé pour les positionner selon un axe perpendiculaire au support, l'une des branches (2) étant équipée d'un pivot de sécurité (5) et l'autre (3) d'un porte-mine ou porte-crayon (6), caractérisé en ce que ledit pivot de sécurité (5) comporte une extrémité arrondie (7) située au bout d'un axe (8) logé dans un corps fixe (9), en ce que ladite extrémité arrondie (7) est mobile autour dudit axe (8) par rapport audit corps fixe (9), en ce qu'elle est partiellement ou entièrement sphérique et en ce qu'elle est partiellement ou entièrement recouverte d'une surface (7') antidérapante destinée à être en contact avec ledit support pour définir le centre de l'arc de cercle ou du cercle à tracer.
EP93919431A 1992-09-08 1993-09-08 Compas a pivot de securite Expired - Lifetime EP0660784B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR9210720A FR2695352B1 (fr) 1992-09-08 1992-09-08 Pointe de compas de sécurité.
FR9210720 1992-09-08
FR9215000 1992-12-10
FR9215000A FR2699120A1 (fr) 1992-12-10 1992-12-10 Compas à pivot de sécurité.
PCT/FR1993/000860 WO1994005514A1 (fr) 1992-09-08 1993-09-08 Compas a pivot de securite

Publications (2)

Publication Number Publication Date
EP0660784A1 EP0660784A1 (fr) 1995-07-05
EP0660784B1 true EP0660784B1 (fr) 1996-12-27

Family

ID=26229702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93919431A Expired - Lifetime EP0660784B1 (fr) 1992-09-08 1993-09-08 Compas a pivot de securite

Country Status (8)

Country Link
US (1) US5555630A (fr)
EP (1) EP0660784B1 (fr)
JP (1) JPH08501033A (fr)
AT (1) ATE146727T1 (fr)
CA (1) CA2144089A1 (fr)
DE (1) DE69306961T2 (fr)
ES (1) ES2099471T3 (fr)
WO (1) WO1994005514A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2273081B (en) * 1992-12-03 1996-07-03 Helix Ltd Drawing instrument
JPH11281675A (ja) * 1998-03-31 1999-10-15 Hewlett Packard Japan Ltd 信号測定用プローブ
US6311404B1 (en) * 1998-10-30 2001-11-06 Paul A. Smith Retractable safety mechanism and compass and method of using the same
USD470178S1 (en) 2001-10-11 2003-02-11 Manufacture D'articles De Precision Et De Dessin - M.A.P.E.D. Compass
DE102007049513B4 (de) * 2007-10-15 2009-07-30 Draw.Tec Gmbh & Co. Kg Zirkel
DE102012219397A1 (de) * 2012-07-04 2014-01-09 Robert Bosch Gmbh Schnittlängenanzeigevorrichtung
CN102950941A (zh) * 2012-11-20 2013-03-06 无锡商业职业技术学院 一种用于白板教学的圆规
DE102013212562B4 (de) * 2013-06-28 2025-02-13 Robert Bosch Gmbh Schnittlängenanzeigevorrichtung für eine Handwerkzeugmaschine
JP6384743B1 (ja) * 2017-08-21 2018-09-05 有限会社コバック スチール製黒板及びボード用のコンパス
KR200497492Y1 (ko) * 2023-05-25 2023-11-24 하기호 다용도 컴퍼스

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US595607A (en) * 1897-12-14 Frederick coykendall
DE211358C (fr) *
FR439396A (fr) * 1911-09-30 1912-06-12 Marcel Bieuville Compas à pointes normales
US2074102A (en) * 1935-06-20 1937-03-16 Elmer W Christy Blackboard compass
US2718703A (en) * 1953-03-06 1955-09-27 Charles R Chilcote Compass protector
CH360507A (de) * 1958-08-13 1962-02-28 Zweifel Alois Zirkelfuss, insbesondere für Wandtafelzirkel
FR1323435A (fr) * 1961-07-11 1963-04-05 Compas à usages multiples
FR2036802A1 (fr) * 1969-04-02 1970-12-31 Europlastiques
DE3219736A1 (de) * 1982-05-26 1983-12-01 Heinz Dipl.-Chem. 4152 Kempen Schmitz-Neuber Zirkelspitzen-schuh

Also Published As

Publication number Publication date
WO1994005514A1 (fr) 1994-03-17
US5555630A (en) 1996-09-17
DE69306961D1 (de) 1997-02-06
CA2144089A1 (fr) 1994-03-17
EP0660784A1 (fr) 1995-07-05
DE69306961T2 (de) 1997-07-24
JPH08501033A (ja) 1996-02-06
ES2099471T3 (es) 1997-05-16
ATE146727T1 (de) 1997-01-15

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