Window guard having boxed release
AssigneeAlvis Neely
InventorsWilliam R. Black, Sr., Gerald L. Sams
Life of this patent
Estimating the term…
Abstract
Guard apparatus for a window or the like in a building characterized by a guard element that is hingedly mounted to a wall adjacent the window and adapted to prevent entry into the window from the exterior and having a releasable fastener that is releasable interiorly of the building without tools to allow emergency egress through the window but resists force exteriorly of the building. The releasable fastener has a lock housing that is inaccessible from outside the building when the lock bar on the guard element is inserted into its normal latched position. Also disclosed are specific structural details and preferred embodiments of the releasable fastener.
Claims4
In a security system having a peripheral structure extending around an area whose access is to be controlled and providing controlled access to the area and having a hingedly mounted guard element traversing an opening allowing at least emergency ingress and egress into and from said area;
- hinged mounted means hingedly mounting the guard element adjacent one of its ends onto the peripheral structure adjacent said opening for pivotal movement of said guard element outwardly to provide egress through said opening;
- and releasable fastening means connected with the guard element at its free end and operable to hold the guard element closed against egress from within or ingress from without in a normal position, the improvement;
- comprising:
- a. a lock bar means connected to said guard element and lockably positionable within a lock housing of said releasable fastening means for locking said guard element in its normal closed position;
- b. a lock housing that is connected with said peripheral support;
- said lock housing having interiorly thereof latch means for locking said lock bar means into its said normal position;
- said latch means being inaccessible from outside said enclosure when said lock bar means is inserted in and locked in said normal position;
- said latch means being automatically operable to lock said lock bar means in said normal position when said lock bar means is pushed into said normal position;
- said latch means being accessible to the interior of said peripheral structure and automatically operable when pushed from inside said peripheral structure to release said lock bar means;
- c. push bar means protruding interiorly of said peripheral structure and operable to push said latch means to release said lock bar means and said guard element;
- said lock bar means having a shoulder and adjacent groove at its interior end for being releasably latched in said normal position;
- said push bar means including a portion having a shoulder adjacent its outer end for pushing on said latch means, and, in turn, being held in a released position until said lock bar means is inserted in said normal position;
- said latch means including an overcenter actuating member and respective shoulder latches at its respective exterior and interior ends for engaging, respectively, said lock bar means in said normal position and said push bar means in said release position.
The guard of claim 3 wherein a lock cover is connected with said guard element and operable to further block access to said latch means interiorly of said lock housing when said lock bar means is in said normal position and an outward biasing means is provided intermediate said lock cover and said lock housing for pushing outwardly on said lock cover and, consequently, on said guard element.
Dependencies are inferred from the claim text.