SCREW CAP, ESPECIALLY MADE OF PLASTIC, FOR CLOSING A BOTTLE OR THE LIKE

BOUCHON FILETE, EN PARTICULIER EN PLASTIQUE, DESTINE A FERMER UNE BOUTEILLE OU SIMILAIRE

English Abstract

A screw cap, especially one made of plastic, for closing a bottle or the like, with a cylindrical threaded section having a female thread
to be screwed on the male thread of a bottle-neck, connected to the security ring via break points, on which there are inwardly-directed
catches to engage with an outer collar on a bottle-neck. The free edge (14) of the cylindrical part (3) has at least one axial projection (15)
which engages positively in a recess (17) in the opposite edge of the security ring (11) in the circumferential direction and releasably in
the axial direction. This positive toothing ensures that, when the screw cap is first screwed on the neck of a bottle, the webs (10) are not
sheared off by increased torques which can be applied if the catches run on the outer collar of the bottle-neck under tension.

French Abstract

L'invention a pour objet un bouchon fileté, en particulier en plastique, destiné à fermer une bouteille ou similaire. Ce bouchon présente une partie filetée cylindrique, pourvue d'un filet femelle destiné à être vissé sur le filet mâle d'un goulot de bouteille, et raccordée, au moyen de points destinés à la rupture, à une bague de sécurité sur laquelle se trouvent des parties saillantes encliquetables, orientées vers l'intérieur et conçues pour venir en contact avec un bourrelet extérieur d'un goulot de bouteille. Le bord libre (14) de la partie cylindrique (3) présente au moins une partie saillante dans le sens axial (15) qui s'emboîte, par liaison de forme dans le sens circonférentiel et de façon amovible dans le sens axial, dans un évidement (17) situé dans le bord opposé de la bague de sécurité (11). Cette denture par liaison de forme permet, lorsque le bouchon fileté est vissé pour la première fois sur le goulot d'une bouteille, que les parties jointives (10) ne soient pas cisaillées sous l'action de couples de rotation excessifs qui pourraient être appliqués, si les parties saillantes encliquetables venaient exercer une contrainte sur le bourrelet extérieur du goulot de la bouteille.

Claims

A screw cap, specifically comprised of plastic, for closing a bottle or the like, with a
cylindrical threaded part that features an inner thread for screwing onto an outer thread of a
bottle neck, and that is connected to a security ring by means of break points, said security ring
featuring inwardly directed catches to engage an outer collar on a bottle neck positively the free
edge of the cylindrical threaded part features an axial projection which positively engages in a
recess in the opposite edge of the security ring, so as to be form locking in the circumferential
direction and removable in the axial direction, characterized by the fact that the break points
(22, 23) are formed between abutting surfaces (18, 20; 19, 21) of projections (15) and the
recess (17).
Altered Page (article 19)

Description

`:~ENT BY:BANNER & WITCOFF, LTD.; 9-25-96 ; 11:09 ;BANNER & WITCOFF,LTD~ 416 368 1645;# 3/ 7
" 21 865~4
A Screw Cap, s~,ecifi~,~lly co.l,l,,;scd of phstic, for closing a bonle or the like.
The i~ tion rclate~ to a screw cap of the lype ;~.~lir~t~l in the preamble of daim 1- for
dosing a bottle or the like.
DE 41 08 453 Al reveals a scre v cap ofthe respeGtive type, ~ the inwardh~r
~ .,d catches are hook shapcd in order that, wben the ~crew cap is first s~.:ed on to ~e
outer ~reat of a bottle neck, the catches ~nap on behind a circumf~e"t;al outer collar
arranged on the bottle neck for s~u,it~ poses. When s~re..i,~ the screw cap off the
bottle, the hook shaped catches keep the sec~ ring back from the outer collar on the bot~e
neclc, so that the brealc points formed of thin webs between the sec~ty ling and the cylindrical
part ofthe screw cap bre~k o*`, and thus the se~ nng remains behind on the bottle ~eck.
It i9 thus assured tllat the bottle has not previously been opened, since when the cap is
unsc~red the security ring is held ba~k on the bottle neck in a lo.ose manner. It i~ thus ea~y
for anyone to ~ecG~ ~Jhetl~r the bottle has already been opencd ODCe.
A disadvan~age to ~is known screw cap is that a relatively great torque is req~.~d
when the hook shaped catches on the security ring are moved ov~ the outer collar on the
bot~e neck. ks a re~ult ofthis i~ ,ased torque there is a risk that tbe break points formed of
thin webs between the safety ring and the c3rlindrical part of ~e scrcw cap will shear of E; even
as the cap is scle~.ed Oll, so that the security ring then rests loosely on the neclc ofthe bottle,
just as in dle case where the bottle has been opened for the first time and has then been closed
again. The filct ~at the co~ne~.~, of the bottle have never been opened is tllc~ ie not
ecog.~ble or guaranteed.
The hJ~ tion has the task of devising a screw cap of the ~ c type~ whereby the
danger of sheanng off the break points betwee~ ~e cylin~ical part of ~he scre v cap and the
~wil~ ~i~ is deerc~d du~ing the initial SCJ~,..h4; on ofthe cap.

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21 ~365~34
The basic task ofthe invention is accomplished by thc illustrated teaching of the
chara~,t~;.,t;c portion of daim 1.
The basic Col cept of the teaching consists of co~ ~c~-tin~ the c~ ~ ic~l part of ~he
screw cap and the s~u~it~r ring in a finn locldng manner in the circumr~l~ ~' Ji,.,~ Lorl, bul
p~ its removal in the direction ofthe threading. By positi~ely en~ the opposing
edges of ~e cylindrical par~ and the security ring, great tor~ues can be t~ .;thout tbe
Op~Ot ~ mo~w..ent ofthc two parts, so that there is no danger that ~e brealc points that
connect tbe sccu.ity ring with the cylindrical part of the saew cap i~ the original condition can
be sbeared or torn off.
The pr~ nn and the recess are e~pedient~ at nght angles, ..hc~ a plurality of
p~ tinr^ and ,.~u.ss~ rc e,.p~r tl~ pn,~;~ed, prefe~ably engaging with each otber in
meander sha~ed manner. The webs can basically be locatet at ar~r desired posi~on~ at is, for
example, where no ~ je~l;c.nc and ~ces3es enga~e each other. Expedi~dy, the break points
are located t.,h.~:ll cu~ y j~ pos~d surfaces of proje~ nQ ~nd ~e~s~s. The
brealc points can also be fonned by means of webs arranged ~ the ~ j~io~
cce~ s~ The too~hing expediently extends over the entire ~w l.rc~e.
~ig. 1 shows a~n axial se~ion th~ou~h an exemplified ~ -~bo ~ of a screw cap
according to the inven~on, tog IhFr with the a~c~ ?~ u~ neck ofthe botde.
Fig. 2 is an enlarged vie~v Il in ~igure 1
Figure 1 show~ a screw cap 1 co~ .;3ed of plastic 9~CC ~diug to ~
e~nbo~ of ehe im.c,llion. It ~dtules a bottom 2 and a cylindrical threaded part 3, witb an
inner thread 4 to be s~ d onto an outer thread 5 of a bottle neck 6, which i`3 Ollly partially
illustrated. A gasket 8 is located between the boltom 2 and a f~ce edge 7 ofthe bottle neck 6.

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21 865(~4
A lower edge 9 of the cylin-~ir~ palt 3 i9 CQn~eCted tO a ~il~f ring 11 by means of
webs 10, s~id sec~uity ring featuring inner Gatches 12.which engage an outer collar 13 on the
bot~e ne~ 6 in thc ilhi"l.a,~ state where the c~p is to be s~ .cd on.
Figure 2 shows a view lI inFigure 1. Tt shows that a lower edge 14 of the cylindrical
part 3 features ~ ~ iGUI~r projecdon~ 13 which engage fiush with the c~ ~Gn~ing
rc~cs~3 16 in the seGur~ty nng l l. An h ediste spac~e l? is fonned ~.,h.~l~ ~e p~uje.,lio~ls
15 and the bottom oftbe .~ess~ t 1, ..h~. the webs 10 ~Nhich hold the se~ity ring 11
onto the cylinJ~ l part are allanged.
Durin~ the initial scre~,v on of a screw cap 1 au~r~lg to Figure 1 the ~>~ o;e~ ns 1
illust~ed in Figure 2 provide that the security nng 11 is taken along ~ithoul ar~r relative
o~pOYI ~ move~ , even when thc torque is high, which is the case wh~n the catches 12 run
onto the oute~ collar 13 and move over it under tension. The thin webslO are lh
prevented from shearing or tealing off during tbe process of 5~ 8 on the cap.
The pr~ectionC 15 need only abut the opposing edges ofthe .,cc~s 16 in the
dire~tion of sc e~u~g on thc cap, but not necessarily in the opposite direction, the removal
dir~lioh At that pOS;1;~ for exunplein the uea ~el..ecn surfaces 18, 19 and sur~ces20,
21,as ;--~;r-t~ by dot-dash lines, break points 22, 23, ;~ ~ by shading, can then be
_.o_d, serving the same p~l,o~c as the webs 10 that fonn ~e break points, and these Ivebs
can then be elinunated.

Representative Drawing