[0001] The present invention relates to an anti-burglary safety device for doors and windows,
comprising a stay arm and a safety bracket for mounting on one and the other of an
openable wing part and a stationary main frame part of the door or window, respectively.
[0002] In particular, the invention is concerned with safety devices intended to afford
secure protection against unauthorized entry into a building through an openable window
or door, e.g. a terrace or balcony door, the wing part of which has been turned to
a ventilation position with a slight opening that would by it self not enable a potential
intruder to gain access.
[0003] In the prior art a variety of constructions and designs of such safety devices have
been disclosed.
[0004] In US-A-2 000 191 the stay arm for the wing part of a door provided with a key-operated
lock of the so-called "Segal" type are formed with open loops, which can each be engaged
by the bolt member of the door lock to hold the stay arm against movement. This solution
would thus suffer from the inherent limitation that it can only be used in connection
with a door lock of a specific type and needs operation by a key to become activated
and released.
[0005] FR-A-2 814 193 discloses sliding attachment of a safety member to a conventional
window stay member having a hook-end for engagement with a conventional eyelet. The
safety member, which is formed with a substantially linear guide channel for the stay
member, is provided at one end with a peg-like nose that can engage with the hook-end
of the stay member after the hook-end has been positioned in the eyelet. Depending
on the squeezing effect of the nose against the hook end of the stay arm this device
may either be rather difficult to activate and release or unable to provide a reasonable
level of security.
[0006] In a prior safety device commercialized by the applicant, which is fairly inexpensive
and simple to mount, use and maintain, the safety bracket is formed with a dovetailed
cut-out having a narrowed opening and an enlargement for accommodation of the stay
arm to be longitudinally displaceable within the enlargement to permit opening of
the wing part within a ventilation range limited by a stop member provided at one
end of the stay arm. Adjacent its other end the stay arm has a narrowed section allowing
passage of said section through the narrowed opening of the cut-out in the safety
bracket. At this other end, the stay arm is pivotally connected, with a projecting
bearing member of a mounting bracket adapted to be secured to one of the wing and
main frame parts to allow pivotal movement of the stay arm from a first position,
in which it projects from the mounting bracket and substantially aligned therewith
through the enlargement of the cut-out in the safety bracket and a second position
substantially at right angles to the first position, by passage of the narrowed section
of the stay arm through the narrowed opening of the cut-out in the safety bracket.
[0007] Due to the provision of the narrowed section, which is the only part of the stay
arm that can pass through the narrowed opening of the cut-out in the safety bracket,
adjacent the pivotal connection of the stay arm with the mounting bracket, movement
of the stay arm from the first open position to the second position, in which the
wing part of the window or door is released for opening beyond the ventilation range,
will only be possible with the wing part very near its closed position with respect
to the main frame part. Nevertheless, practical experience has shown that due to the
fact that, for easy operation in respect of engagement with and disengagement from
the safety bracket, the narrowed section of the stay arm must have a certain minimum
length, it is not entirely impossible to operate the stay arm by inserting a rigid
or semi-rigid tool through a slightly open window or door to engage the stay arm in
the direction of release from the safety bracket, whereby movement of the stay arm
to the second position may become possible by moving the wing part in the closing
direction from the slightly open position, in which the tool has been introduced.
This risk may increase, of course, if the mounting and safety brackets of this safety
device, which is commonly sold directly to house owners for self-installation, are
not positioned on and secured to the wing and main frame parts of the window with
the accuracy recommended by the manufacturer.
[0008] A safety device according to the preamble of claim 1 is disclosed in US-A-1 920 693.
[0009] On this background, it is the object of the invention to provide an improved solution
with respect to the latter prior art device, by means of which unauthorized access
through a slightly open window or door will become impossible without complete destruction
of the safety device itself.
[0010] In accordance with the invention this object is accomplished by means of an anti-burglary
safety device of the above-mentioned prior design of the applicant, as recited in
the preamble of claim, which is characterized in that a locking arm is pivotally connected
at one end with the narrowed section of the stay arm at a separation from the pivotal
connection of the stay arm with the mounting bracket to allow pivotal movement of
the locking arm from a locking position, in which it overlaps said narrowed section
to prevent passage thereof through the narrowed opening of the cut-out in the safety
bracket, to an inoperative position, in which it is moved away from the narrowed section
to allow said passage, the locking arm being provided with engagement means for engagement
with the projecting bearing member of the mounting bracket to prevent said pivotal
movement of the locking arm in said first position of the stay arm.
[0011] Preferred and advantageous embodiments of the safety device according to the invention
are stated in the dependent claims.
[0012] In the following the invention will be explained in further detail with reference
to the accompanying drawings, in which
Figs. 1 and 2 show two variants of the safety device according to the applicant's
prior design,
Fig. 3 is a side view of the stay arm in any of figs. 1 and 2 in a released position
disengaged from the safety bracket,
Fig. 4 is a schematic plan view of the safety bracket of a device as shown in figs
1 or 2,
Figs. 5 and 6 are perspective views of a preferred embodiment of a safety device according
to the invention in its activated secure position and a released position, respectively,
and
Figs. 7 to 9 are side views of the stay arm with its mounting bracket in the safety
device in figs. 5 and 6.
[0013] Fig. 1 shows the applicant's prior safety device in a version mainly intended for
a window or door having wing and main frame parts 1 and 2 typically composed of wood,
plastics or aluminium profiles, the window or door being opened by turning the wing
part 1 in the direction outwards from the main frame part 2.
[0014] The constituent parts of the safety device are typically made of metal like steel
or aluminium, but could alternatively be made by injection moulding of a solid hard,
possibly reinforced plastics material, and comprises a stay arm 3 in connection with
a mounting bracket 4, which is secured safely to a surface of the wing part 1 parallel
to the glazing layer thereof, and an angular safety bracket 5 having legs 6 and 7
at right angles to each other, one of which is safely secured to a surface of the
main frame part 2 generally at right angles to glazing layer of the wing part 1.
[0015] To prevent disconnection from the window profiles after completed installation the
mounting and safety brackets may, as recommended by the manufacturer, be secured to
their respective parts of the window or door by one-way screws, which after tightening
can only be removed by destructive removal of the surrounding part of the wing and
main frame profiles.
[0016] As shown in fig. 4 the other leg 7 of the safety bracket 5 is formed with a dovetailed
cut-out 8 having a narrowed opening 9 and an enlargement 10 for accommodation of the
stay arm 3, so that the stay arm will be longitudinally displaceable through the enlargement
10 to permit opening of the wing part 1 with respect to the main frame part 2 within
a ventilation range limited by a bent end part 11 forming a stop member at one end
of the stay arm 3.
[0017] Over the major part of its length the stay arm 3 has a generally circular cross-section
and the enlargement 10 of the cut-out 8 in the safety bracket 5 has a cross-section
allowing easy sliding displacement of the stay arm 3 through the enlargement.
[0018] As further apparent from fig. 4 the enlargement 10 may have a substantially linear
lower edge 12 which can be engaged by any of a number of incisions 12a, shown in fig.
3, forming discrete local engagement points distributed along the length of the stay
arm 3, whereby the longitudinal position of the stay arm 3 can be adjusted to a number
of ventilation positions within the ventilation range. It will be appreciated, however
that the engagement means provided by the safety bracket and the stay arm may be of
many different forms.
[0019] In its other end remote from the bent end part 11 the stay arm 3 is pivotally connected
with a bearing member 13 projecting from the mounting bracket 4. More in detail the
stay arm 3 is formed in this end with a relatively short narrowed, e.g. relatively
flat brick-like section 14 having a width less than the width of the narrowed opening
9 of the cut-out 8 in the safety bracket 5. The bearing member 13 projecting from
the mounting bracket 4 is bifurcated with arms 15, between which the narrowed section
14 of the stay member 3 is interleaved for pivotal movement in a plane perpendicular
to the plane of the drawing about a pivot axis 16 provided by a shaft or pin member
not illustrated.
[0020] In the version shown in fig. 2, which is mainly intended for a window or door, which
is opened by inwards movement of the wing part 1' with respect to the main frame part
2', the main deviation from the version in fig 1 is that the stay arm 3' with its
mounting bracket 4' and the safety bracket 5' have been reversed, such that the mounting
bracket 4' and the safety bracket 5' are secured to surfaces of the main frame part
2' and wing part 1', respectively, located in a common plane parallel to the glazing
layer of the wing part 1'. Due to this geometrical difference the legs 6' and 7' of
the safety bracket 5' are also parallel to, but separated from each other. In other
aspects, the version illustrated in fig. 2 is similar to the version shown in fig.
1.
[0021] As the narrowed end section 14, which is the only part of the stay arm 3 that can
pass through the narrowed opening 9 of the cut-out 8 in the safety member 5, is disposed
adjacent to the pivotal connection of the stay arm 3 with the projecting bearing member
13, it will be appreciated that only with the narrowed section 14 positioned in the
enlargement 10 of the safety bracket 5, i.e. with the wing part 1 in a position very
near to its closed position with respect to the main frame part 2, may the stay arm
3 be released from its accommodation within the enlargement 10 of the cut-out 8 in
the safety bracket 5 to allow disengagement of the stay arm 3 from the safety bracket
5 by turning the stay arm 3 to the upright substantially vertical position shown in
fig. 3, in which the stay arm 3 may be retained in a holder member 17 secured to the
main frame part 2 or the wing part 1 according to the actual version.
[0022] In actual use of the safety device shown in figs. 1 and 2 it has appeared, however,
that it is not entirely impossible to gain access through a window slightly opened
to a ventilation position by introduction of a thin rigid instrument between the wing
part 1 and the main frame 2 to engage the stay arm of the safety device, which may
then by inwards pushing of the wing part be disengaged from the safety bracket and
thereby allow the wing part to be opened sufficiently for an intruder.
[0023] To eliminate this risk the safety device according to the invention, of which a preferred
embodiment is shown in figs. 5 to 9, provides an active locking of the stay arm 103
in its operative first position by means of a locking arm 117, which in a locking
position as shown in fig. 5 overlaps the narrowed section 114 of the stay arm 103
on both sides and thereby prevent passage of the narrowed section 114 through the
narrowed opening 109 of the safety bracket 108.
[0024] At one end the locking arm 117 is pivotally connected by means of a pivot pin 118
with the narrowed section 114 of the stay arm at a separation from the pivotal connection
of the stay arm 103 with the mounting bracket 104, that will allow pivotal movement
of the locking arm 117 away from its locking position, but as shown in fig. 6 only
after a 90° turning of the stay arm 103 in a direction opposite to the direction of
the turning of the stay arm required for disengagement from the safety bracket 105.
[0025] As best seen in fig. 6 the locking arm 117 is a short generally cylindrical member
matching the generally circular cross-section of the stay arm 103. For accommodation
of the pivotal connection with the narrowed section 114 of the stay arm 103 and for
accommodation of the narrowed section 114 in the locking position a slit 119 is formed
through the length of the locking arm 117, At its pivotal connection with the narrowed
section 114 the locking arm 117 is intersected by the slit 119, whereas over the remaining
length of the locking arm 117 the slit 119 may extend to a depth of about 60 to 70
% of the diameter of the locking arm. For interleaved aligned accommodation in the
slit 119 in the locking position shown in fig. 5 the narrowed section 114 of the stay
arm 103 may be formed in its upper side with a depression 120.
[0026] In the first operative position of the stay arm 103 shown in fig. 5 the locking arm
117 is blocked against turning with respect to the stay arm 103 by a locking engagement
between engagement means provided by the locking arm and the projecting bearing member
113 of the mounting bracket 104.
[0027] As shown in figs. 7 to 8 the engagement means for locking of the locking arm 117
in the first operative position of the stay arm 103 comprise, in the illustrated embodiment,
substantially circular mating end faces 121 and 122 of the locking arm 117, on one
hand, and the bifurcated arms 115 of projecting bearing member 113, on the other hand,
said end faces having a common centre at the pivot axis 116 for the pivotal connection
of between the stay arm 103 and the bearing member 113. It will be appreciated, however,
that other forms of engagement means could easily be foreseen by a skilled person.
[0028] As will be appreciated, the turning of the stay arm 104 from the position shown in
fig. 5 and 7 to the position shown in fig. 8, which is required for release of the
locking arm will not be possible in the first operative position of the stay arm,
in which either a part of the stay arm itself with the narrowed section 114 overlapped
by the locking arm 117 or the projecting bearing member 113 of the mounting bracket
104 will be positioned in the enlargement 110 of the cut-out 108 in the safety bracket
105, and no passage of the locking arm 117 overlapping the narrowed section 114 through
the narrowed opening 109 of the cut-out 108 will be possible.
[0029] Thereby turning of the stay arm 103 to the position shown in figs. 8 and 9 for release
of the locking arm will only be possible in the fully closed position of the wing
part 101 with respect to the main frame part 102, in which the bearing member 113
of the mounting bracket 104 is positioned in the safety bracket 104, whereas the stay
arm as a whole is outside the safety bracket. Evidently, in this closed position of
the wing part it will not be possible to engage the stay arm by introduction of rigid
instrument from the external side of the window or door.
[0030] For accommodation of the end face 121 by turning of the locking arm 117 together
with the stay arm 103 to the position shown in fig. 8 the bifurcated arms 115 of the
projecting bearing member 113 may be formed at its lower side with a substantially
circular depression 123 having its centre at the pivot axis for the pivot pin 118.
1. An anti-burglary safety device for doors and windows, comprising a stay arm (103)
and a safety bracket (105) adapted for mounting on one and the other of an openable
wing part (101) and a stationary main frame part (102) of the door or window, respectively,
the safety bracket (105) being formed with a dovetailed cut-out (108) having a narrowed
opening (109) and an enlargement (110) for accommodation of the stay arm (103) to
be longitudinally displaceable within the enlargement (110) to permit opening of said
wing part (101) within a ventilation range limited by a stop member (111) provided
at one end of the stay arm (103), the stay arm (103) having adjacent its other end
a narrowed section (114) allowing passage of said section (114) through the narrowed
opening (109) of the cut-out (108) in the safety bracket (105) and being pivotally
connected (116), at said other end, with a projecting bearing member (113) of a mounting
bracket (104) adapted to be secured to said one of the wing and main frame parts (101,102)
to allow pivotal movement of the stay arm (103) from a first position, in which it
projects from the mounting bracket (104) and substantially aligned therewith through
the enlargement (110) of the cut-out (108) in the safety bracket (105) and a second
position substantially at right angles to said first position, by passage of said
narrowed section (114) of the stay arm (103) through the narrowed opening (109) of
the cut-out (108) in the safety bracket (105),
characterized in that a locking arm (117) is pivotally connected (118) at one end with the narrowed section
(114) of the stay arm (103) at a separation from the pivotal connection (116) of the
stay arm (103) with the mounting bracket (104) to allow pivotal movement of the locking
arm (117) from a locking position, in which it overlaps said narrowed section (114)
to prevent passage thereof through the narrowed opening (109) of the cut-out (108)
in the safety bracket (105), to an inoperative position, in which it is moved away
from the narrowed section (114) to allow said passage, the locking arm (117) being
provided with engagement means (121) for engagement with the projecting bearing member
(113) of the mounting bracket (104) to prevent said pivotal movement of the locking
arm (117) in said first position of the stay arm (103).
2. A safety device as claimed in claim 1, characterized in that said engagement means of the locking arm (117) comprises an end face (121) thereof
matching an engagement face (122) provided by an end edge of said projecting bearing
member (113) of the mounting bracket (104).
3. A safety device as claimed in claim 2, characterized in that said end face (121) of the locking arm (117) and said engagement face (122) of said
projecting bearing member (113) are substantially circular with a common centre at
the pivot axis (116) for the pivotal connection between the stay arm (103) and said
bearing member (113).
4. A safety device as claimed in claim 3, characterized in that at one side thereof said projecting bearing member (113) is formed with a substantially
circular depression (123) having its centre at the pivot axis (118) for the pivotal
connection between the locking arm (117) and the stay arm (103).
5. A safety device as claimed in any of claims 1 to 4, characterized in that the mounting bracket (4) for the stay arm (3) and the safety bracket (5) are adapted
for connection with the openable wing part (1) and the main frame part (2), respectively,
of the door or window, the safety bracket (5) comprising an angular bracket member
with first and second legs (6,7) substantially at right angles to each other.
6. A safety device as claimed in any of claims 1 to 4, characterized in that the mounting bracket (4') for the stay arm (3') and the safety bracket (5') are adapted
for connection with the main frame part (2') and the openable wing part (1'), respectively,
of the door or window, the safety bracket (5') comprising substantially parallel legs
(6',7').
7. A safety device as claimed in any of claims 1 to 6, characterized in that a holder member (17) is provided to be secured to the same of said wind and frame
parts (1,2) as the mounting bracket (4) to hold said stay arm (3) in said second position
to allow opening of the wing part (1) beyond said limited ventilation range.
1. Einbruchsicherheitsvorrichtung für Türen und Fenster, umfassend einen Stellarm (103)
und eine Sicherheitshalterung (105) zum Montieren auf dem einen und dem anderen von
einem aufschliessbaren Flügelteil (101) bzw. einem stationären Rahmenteil (102) einer
Tür bzw. eines Fensters, welche Sicherheitshalterung (105) mit einem schwalbenschwanzförmigen
Ausschnitt (108) mit einer eingeengten Öffnung (109) und einer Erweiterung (110) zur
in Längsrichtung versetzbaren Aufnahme des Stellarmes (103) ausgebildet ist, um ein
Öffnen des Flügelteils (101) innerhalb eines durch an einem Ende des Stellarms (103)
vorgesehenes Arretierelement (111) begrenzten Ventilationsbereichs zu ermöglichen,
wobei der Stellarm (103) am anderen Ende einen eingeengten Abschnitt (114) aufweist,
der durch die eingeengte Öffnung (109) des Ausschnitts (108) in der Sicherheitshalterung
(105) passieren kann, und an dem erwähnten anderen Ende mit einem hervorstehenden
Lager (113) eines zum Befestigen an einen der Flügel- und Rahmenteile (101, 102) vorgesehenen
Befestigungsbügels (104) schwankbar verbunden ist, um eine Schwankbewegung des Stellarms
(103) zu ermöglichen aus einer ersten Stellung, in welcher er aus dem Befestigungsbügel
(104) im wesentlichen fluchtend damit hervorragt, durch die Erweiterung (110) des
Ausschnitts (108) in der Sicherheitshalterung (105) in eine zur ersten Stellung im
wesentlichen rechtwinkeligen zweite Stellung, in welcher der eingeengte Abschnitt
(114) des Stellarms (103) durch die eingeengte Öffnung (109) des Ausschnitts (108)
in der Sicherheitshalterung (105) passiert, dadurch gekennzeichnet, dass ein Sperrarm (117) an einem Ende mit dem eingeengten Abschnitt (114) des Stellarms
(103) im Abstand von der drehbaren Verbindung (116) des Stellarms (103) mit dem Befestigungsbügel
(104) drehbar verbunden ist um eine Schwankbewegung des Sperrarms (117) zu ermöglichen
aus einer Verriegelungsstellung, in welcher der Sperrarm den eingeengten Abschnitt
(114) zur Verhinderung dessen Passage durch die eingeengte Öffnung (119) des Ausschnitts
(108) in der Sicherheitshalterung (105) überliegt, in eine unwirksame Stellung, in
welcher der Sperrarm von dem eingeengten Abschnitt (114) weg bewegt ist, um erwähnte
Passage zu ermöglichen, wobei der Sperrarm (117) Eingriffsmittel (121) zum Eingriff
mit dem hervorstehenden Lager (113) des Befestigungsbügels (104) aufweist, die in
der ersten Stellung des Stellarms (103) an der drehenden Bewegung des Sperrarms (117)
hindern.
2. Sicherheitsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Eingriffsmittel des Sperrarms (117) eine Endfläche (121) aufweist, die einer
durch eine Endkante des hervorstehenden Lagers (113) des Befestigungsbügels (104)
gebildeten Eingriffsfläche (122) angepasst ist.
3. Sicherheitsvorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die Endfläche des Sperrarms (117) und die Eingriffsfläche (122) des hervorstehenden
Lagers (113) im wesentlichen kreisförmig sind mit einem gemeinsamen Zentrum bei der
Drehachse (116) für die drehbare Verbindung zwischen dem Stellarm (103) und dem Lager
(113).
4. Sicherheitsvorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass das hervorstehende Lager (113) auf einer Seite eine im wesentlichen kreisförmige
Vertiefung (123) aufweist, deren Zentrum bei der Drehachse (118) für die drehbare
Verbindung zwischen dem Sperrarm (117) und dem Stellarm (103) liegt.
5. Sicherheitsvorrichtung nach einem der Ansprüche 1-4, dadurch gekennzeichnet, dass der Befestigungsbügel (4) für den Stellarm (3) und die Sicherheitshalterung (5) zur
Verbindung mit dem aufschliessbaren Flügelteil (1) bzw. dem Rahmenteil (2) der Tür
oder des Fensters angepasst sind, wobei die Sicherheitshalterung (5) eine winkelige
Konsole mit zueinander rechtwinkeligen ersten und zweiten Schenkeln (6, 7) aufweist.
6. Sicherheitsvorrichtung nach einem der Ansprüche 1-4, dadurch gekennzeichnet, dass der Befestigungsbügel (4') für den Stellarm (3') und die Sicherheitshalterung (5')
zur Verbindung mit dem Rahmenteil (2') bzw. dem aufschliessbaren Flügelteil (1') der
Tür oder des Fensters vorgesehen sind, wobei die Sicherheitshalterung im wesentlichen
parallele Schenkel (6', 7') aufweist.
7. Sicherheitsvorrichtung nach einem der Ansprüche 1-6, dadurch gekennzeichnet, dass ein Halteelement (17) vorgesehen ist, das an denselben der Flügel- und Rahmenteile
(1,2) wie der Befestigungsbügel (4) befestigt wird, um den Stellarm (3) in erwähnter
zweiten Stellung zum Öffnen des Flügelteils (1) über den begrenzten Ventilationsbereich
hinaus zu halten.
1. Dispositif de sécurité anti-effraction pour portes et fenêtres, comprenant un bras
de maintien (103) et un support de sécurité (105) adapté pour montage sur l'un et
l'autre d'une portion d'aile ouvrable (101) et d'une portion de cadre stationnaire
(102) respectivement de la porte ou de la fenêtre, le support de sécurité (105) étant
pourvu d'une coupure à queue-d'aronde (108) présentant une ouverture resserrée (109)
et un élargissement (110) pour loger le bras de maintien (103) susceptible de pouvoir
se déplacer longitudinalement dans l'élargissement (110) pour permettre l'ouverture
de ladite portion d'aile (101) dans une zone de ventilation limitée par un élément
d'arrêt (111) pourvu à l'un bout du bras de maintien (103), le bras de maintien (103)
présentant près de son autre bout une section resserrée (114) permettant le passage
de ladite section (114) à travers l'ouverture resserrée (109) de la coupure (108)
dans le support de sécurité (105) et étant relié à pivotement (116) à l'autre bout
avec un élément de palier faisant saillie (113) d'un support de montage (104) adapté
à fixer à l'une des portions (101, 102) de l'aile et du cadre pour permettre un mouvement
à pivotement du bras de maintien (103) depuis une première position, dans laquelle
il fait saillie depuis le support de montage (104) et essentiellement aligné à celui-ci
à travers l'élargissement (110) de la coupure (108) dans le support de sécurité (105)
et une deuxième position essentiellement perpendiculaire à la première position, par
passage de ladite section resserrée (114) du bras de maintien (103) à travers l'ouverture
resserrée (109) -de la coupure (108) dans le support de sécurité (105), caractérisé en ce qu'un bras de fermeture (117) est relié à pivotement (118) à l'un bout avec la section
resserrée (114) du bras de maintien (103) à une séparation de la liaison à pivotement
(116) du bras de maintien (103) avec le support de montage (104) pour permettre un
mouvement à pivotement du bras de fermeture (117) depuis une position de fermeture
dans laquelle il recouvre ladite section resserrée (114) pour empêcher le passage
de celle-ci à travers l'ouverture resserrée (109) de la coupure (108) dans le support
de sécurité (105) dans une position inopérable, dans laquelle il est déplacé de la
section resserrée (114) pour permettre ledit passage, le bras de fermeture (117) étant
pourvu de moyen d'engagement (121) pour engagement avec l'élément de palier faisant
saillie (113) du support de montage (104) pour empêcher ledit mouvement à pivotement
du bras de fermeture (117) dans ladite première position du bras de maintien (103).
2. Dispositif de sécurité selon la revendication 1, caractérisé en ce que ledit moyen d'engagement du bras de fermeture (117) comprend une face terminale (121)
épousant une face d'engagement (122) pourvue par un bord terminal dudit élément de
palier faisant saillie (113) du support de montage (104).
3. Dispositif de sécurité selon la revendication 2, caractérisé en ce que ladite face terminale (121) du bras de fermeture (117) et ladite face d'engagement
(122) dudit élément de palier faisant saillie (113) sont essentiellement circulaires
avec un centre commun à l'axe de pivotement (116) pour la liaison à pivotement entre
le bras de maintien (103) et ledit élément de palier (113).
4. Dispositif de sécurité selon la revendication 3, caractérisé en ce qu'à l'un côté de celui-ci, ledit élément de palier faisant saillie (113) est pourvu
d'une dépression essentiellement circulaire (123) ayant son centre à l'axe de pivotement
(118) pour la liaison à pivotement entre le bras de fermeture (117) et le bras de
maintien (103),
5. Dispositif de sécurité selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le support de montage (4) pour le bras de maintien (3) et le support de sécurité
(5) sont adaptés à liaison avec respectivement la portion d'aile ouvrable (1) et la
portion de cadre (2) de la porte ou fenêtre, le support de sécurité (5) comprenant
un élément de garniture angulaire avec un premier et deuxième pied (6, 7) essentiellement
perpendiculaire l'un à l'autre.
6. Dispositif de sécurité selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le support de montage (4') pour le bras de maintien (3') et le support de sécurité
(5') sont adaptés à liaison avec respectivement la portion de cadre (2') et la portion
d'aile ouvrable (1') de la porte ou fenêtre, le support de sécurité (5') comprenant
des pieds essentiellement parallèles (6', 7').
7. Dispositif de sécurité selon l'une quelconque des revendications 1 à 6, caractérisé en ce qu'un élément de support (17) est pourvu pour fixer à ladite même portion d'aile et de
cadre (1, 2) que le support de montage (4) pour retenir ledit bras de maintien (3)
dans ladite deuxième position pour permettre l'ouverture de la portion d'aile (1)
au-delà de ladite zone de ventilation limitée.