Movable or removable closures – With specified means to effect emergency release to closure
Patent
1992-10-08
1994-03-01
Kannan, Philip C.
Movable or removable closures
With specified means to effect emergency release to closure
49 56, 49395, E05B 6510
Patent
active
052896552
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND ART
This invention relates to security grilles for windows that can be released in order to effect an emergency exit from the building which they secure.
In emergency situations, such as fire, the occupants of a building will often not be able to reach normal exits, or because of panic they might not firstly obtain the necessary keys to release, e.g. deadlocked, security doors. Therefore security grilles which are releasable without the requirement of a key are desirable in at least many establishments.
Australian patent specification 79341/87 discloses such a releasable security grille but it has been found that there is a viable alternative to the actual release/locking mechanism disclosed in that specification.
DISCLOSURE OF INVENTION
Accordingly, the present invention may be said to consist in a window security grille including:
first attachment means at a first edge of the grill, being securable to an exterior or interior wall proximate a window opening or within the window opening of a building and allowing release or pivotable movement of the grille relative to such wall;
anchor means rigidly attachable to the wall proximate the window opening or within the window opening to be opposite the first attachment means;
second attachment means, at a second edge of the grille opposite the first edge, including a locking portion and an actuating device both being secured to the grille and the actuating device both moving the locking portion between locked and released positions, the locking portion lockingly engaging the anchor means when in the locked position when the grille is closed to secure the grille closed and releasing same when in the released position.
Preferably in one embodiment the actuating device receives when the grille is closed a release control device being connected to the wall and including a handle end and an opposite actuating end inserted through such wall, the actuating end engaging the actuating device so that manual operation of the handle end effects said moving the locking portion.
Preferably in an alternative embodiment the actuating device includes a manually operable lever integral with a frame of the grille.
Preferably the first attachment means a-re formed by at least two hinging devices having a common hinging axis and each being rigidly attached along the first edge of the grille and rigidly attachable to such exterior wall in a method that prevents its release from the wall at least while the grille is in a closed secure position relative to the wall.
Preferably the anchor means are a pair of eye structures rigidly joined to a plate adapted to be attached to the wall exterior preferably by counter sunk screw means. In one form the anchor means are eyebolts or similar devices with their eye sections exposed on the exterior wall or interior wall, as required, and their shank portions extending through the wall and securely fastened to the wall. Upon closing the grille into the closed secure position proximate the exterior or interior wall, entrant portions within the second edge of the grille accept the eye portions and the locking portions, being proximate the cut-outs, are sliding bolts which, in the locked position are slid into and through the eye portions.
Preferably the locking portions are sliding bolt devices actuated by pivotal lever devices connected by respective reciprocating rods to a further pivotal lever device rotated by the actuating device.
Preferably the actuating device includes a non-circular hole which receives in a torque transmitting co-operative manner, the actuating end which is of a similar cross-sectional shape and size to the hole.
BRIEF DESCRIPTION OF DRAWINGS
By way of example only, one preferred form of the present invention will now be described with reference to the accompanying drawings in which:
FIG. 1 is a perspective view of an installed security grille in a partially opened position according to the invention;
FIG. 2 shows a perspective partially exposed view of a section of the device shown in FIG. 1;
FIG. 3 shows
REFERENCES:
patent: 4249345 (1981-02-01), Littleton
patent: 4304070 (1981-12-01), Musacchia
patent: 4630396 (1986-12-01), Zvi et al.
patent: 4634157 (1987-01-01), Fernandez
patent: 4671015 (1987-06-01), Curry et al.
patent: 4677789 (1987-07-01), Merry
patent: 4937975 (1990-07-01), Zilkha
Marmora Daniele A.
Marmora Fausto
Jaffer David H.
Kannan Philip C.
LandOfFree
Safety release security grille does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Safety release security grille, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Safety release security grille will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-569262