EP0660784B1 - Compass with safety pivot - Google Patents

Compass with safety pivot 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)
French (fr)
Other versions
EP0660784A1 (en
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/en
Priority claimed from FR9215000A external-priority patent/FR2699120A1/en
Application filed by Individual filed Critical Individual
Publication of EP0660784A1 publication Critical patent/EP0660784A1/en
Application granted granted Critical
Publication of EP0660784B1 publication Critical patent/EP0660784B1/en
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.

Abstract

PCT No. PCT/FR93/00860 Sec. 371 Date Mar. 7, 1995 Sec. 102(e) Date Mar. 7, 1995 PCT Filed Sep. 8, 1993 PCT Pub. No. WO94/05514 PCT Pub. Date Mar. 17, 1994A compass (1) with safety pivot is disclosed for drawing arcs or complete circles on a surface without perforating it and in an absolutely safe manner for young users. The safety pivot of said compass has a rounded end at the end of a pin (8) housed in the body (9). Said rounded end is partially or fully covered by a non-slip finish (7') designed-to be in contact with said drawing surface to define the centre of the arc or circle to be drawn.

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.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.

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.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.

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.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.

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).
There are certainly inventions intended to improve the handling and layout of compasses:
  • either in order to facilitate the work of the mathematician - such as the invention of Mister GOMEZ BARQUERO (FR-A-1 323 435),
  • either to facilitate the drawing of circles on the blackboard - such as the inventions of Messrs CHRISTY (US-A-2 074 102) and ZWEIFEL (CH - A - 360 507),
  • or again in order to spare the support as proposed by the invention of 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.
Unlike the cited inventions, the safety pivot compass designed in particular for the safety of the user, brings the following innovations:
  • removal of the sharp point,
  • studied design of the contact surface of the pivot with the support,
  • mobility of the pivot in the vertical axis.

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.It will also be noted that the present invention retains the ergonomic qualities of the instrument using the compass as it is currently designed, manufactured and widespread in the 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.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.

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.
The present invention and its advantages will appear more clearly in the following description of an exemplary embodiment, with reference to the appended drawings, in which:
  • FIG. 1 represents an elevation view of a compass according to the invention and
  • Figure 2 is an enlarged sectional view of the safety pivot object of the 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').With reference to the figures, 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 ').

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.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. In particular, the safety pivot as described can be adapted to any other drawing instrument rotating around an axis.

Claims (1)

  1. A compass (1) with a safety pivot for drawing at least one of arcs and circles on a drawing surface, the compass comprising two branches (2, 3) which are articulated at a common end (4), these branches being made of two articulated parts (2, 2', 3, 3'), both lower parts (2', 3') being coupled to a return mechanism (10) operated for positioning them along an axis perpendicular to the drawing surface, the first branch (2) being equipped with a safety pivot (5) and the second branch (3) being equipped with one of pencil and a pencil holder (6), characterised in that the safety pivot (5) comprises a rounded end (7) located at the end of a pin (8) housed in a fixed body(9), the rounded end (7) being rotatable about said axis (8) in relation to the fixed body (9), the rounded end (7) being partially or totally spherical, and the rounded end (7) being partially or totally covered with a non-slip finish (7') for contacting the drawing surface to define the centre of the arc or the circle to be drawn.
EP93919431A 1992-09-08 1993-09-08 Compass with safety pivot Expired - Lifetime EP0660784B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR9210720 1992-09-08
FR9210720A FR2695352B1 (en) 1992-09-08 1992-09-08 Safety compass tip.
FR9215000A FR2699120A1 (en) 1992-12-10 1992-12-10 Pair of compasses for drawing arcs or circles
FR9215000 1992-12-10
PCT/FR1993/000860 WO1994005514A1 (en) 1992-09-08 1993-09-08 Compass with safety pivot

Publications (2)

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

Family

ID=26229702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93919431A Expired - Lifetime EP0660784B1 (en) 1992-09-08 1993-09-08 Compass with safety pivot

Country Status (8)

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

Families Citing this family (9)

* 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 (en) * 1998-03-31 1999-10-15 Hewlett Packard Japan Ltd Signal measuring probe
US6311404B1 (en) * 1998-10-30 2001-11-06 Paul A. Smith Retractable safety mechanism and compass and method of using the same
DE102007049513B4 (en) * 2007-10-15 2009-07-30 Draw.Tec Gmbh & Co. Kg compasses
DE102012219397A1 (en) * 2012-07-04 2014-01-09 Robert Bosch Gmbh Cutting length indicator
CN102950941A (en) * 2012-11-20 2013-03-06 无锡商业职业技术学院 Compasses for whiteboard teaching
DE102013212562A1 (en) * 2013-06-28 2014-12-31 Robert Bosch Gmbh Cutting length display device for a hand tool
JP6384743B1 (en) * 2017-08-21 2018-09-05 有限会社コバック Steel blackboard and board compass
KR200497492Y1 (en) * 2023-05-25 2023-11-24 하기호 A multipurpose compass

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 (en) *
FR439396A (en) * 1911-09-30 1912-06-12 Marcel Bieuville Compass with normal points
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 (en) * 1958-08-13 1962-02-28 Zweifel Alois Compass foot, especially for blackboard compasses
FR1323435A (en) * 1961-07-11 1963-04-05 Multipurpose compass
FR2036802A1 (en) * 1969-04-02 1970-12-31 Europlastiques
DE3219736A1 (en) * 1982-05-26 1983-12-01 Heinz Dipl.-Chem. 4152 Kempen Schmitz-Neuber Shoe for compass point

Also Published As

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

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