US 5,619,821 AGranted

Easily-installed quick-release locking modular security grill with optionally affixed penetration-resistant rotating fins serving as louvers and as a security shield

AssigneeLockinbar, Inc.

InventorsCharles W. St. George, Craig Adams, Donald Gonrowski, William Rose

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Abstract

A spring-loaded quick-release mechanism to a locking security grille is triggered by (i) manual activation, preferably through a foot switch, or (ii) fire, typically through a thermal fuse. Fins incorporated in, and/or affixed to the bars of, a security grille are preferably rotating, normally in phase, so as to serve as a louver or, when completely closed, an interlocked security shield, or panel. One locking release mechanism, which may optionally be quick release, has a sliding bar with alternate (i) extension and (ii) notch regions that respective engage the ends of solid, purely cylindrical, elongate prisms, normally cylindrical bars, to respective lock, and disengage, these prisms in a security grille. Finally, a security grille with standard universal retention assemblies variously serves to retain any, and any combinations, of tubular bars, solid bars, fins mounted to bars, and solid fins. Any of these spanning elements may variously be made from at least both plastic and metal, and are substantially visually undetectably different when so made.

Claims14

Dependent claims

A security grille for a structure having and defining a multi-sided window opening, the securitiy grille comprising:

spanning elements, each having a first end and a second end, for spanning the window opening, each of the spanning elements being individually interchangeably selected from the group consisting of
bars, meaning elongate prisms having a maximum cross-sectional dimension that is less than 50% of a distance of separation between adjacent spanning elements in the security grill, and
fins, meaning substantially planar elongate prisms having a maximum cross-sectional dimension that is more than 50% of the distance of separation between adjacent spanning elements in the security grill,
where, in at least at a one of its first end and its second end, each of the spanning elements includes a stud portion;
a spanning element first-end support member, affixed to the structure at a first side of the window opening, for selectively receiving and engaging the first end of each of the spanning elements;
a spanning element second-end support member, affixed to the structure at a second side of the window opening opposite to the first side, for selectively receiving and engaging the second end, opposite to the first end, of each of the spanning elements, the spanning elements forming a security grille over the window opening when their first and their second ends are selectively respectively received and engaged by the first-end and the second-end support members;
at least a one of the spanning element first-end support member and the spanning element second-end support member that receives and engages the at least one stud portion end of the spanning elements including
a housing,
a securement means for securing the housing to the structure at a side of the structure's multi-sided window opening,
openings in the housing to accept the stud portion of each of the spanning elements,
a slide means, having and defining catch means suitable to engage the stud portions of spanning elements, mounted for sliding in the housing for sliding movement between a first, stud-locking position where the catch means secures the stud portions of the spanning elements, securing the spanning elements to the housing and thus to the structure, and a second, stud-disengaging, position where the catch means releases the stud portion of the spanning elements, permitting removal of the spanning elements from the housing, and
locking means to retain the slide means in its first, stud-locking, position.

9 more elements

A housing assembly for a security grille for use on a structure having and defining a multi-sided window opening, the security grille having

spanning elements, each having a first end and a second end where a stud portion is located on at least a one end, spanning the window opening,
a spanning element first-end support member, affixed to the structure at a first side of the window opening, for selectively receiving and engaging the first end of each of the spanning elements, and
a spanning element second-end support member, affixed to the structure at a second side of the window opening opposite to the first side, for selectively receiving and engaging the second end, opposite to the first end, of each of the spanning elements,
wherein the spanning elements form a security grille over the window opening when their first and their second ends are selectively respectively received and engaged by the first-end and the second-end support members, the housing assembly comprising:
a housing;
securement means for securing the housing to the structure at a side of the structure's multi-sided window opening;
openings in the housing to accept the stud portion of each of the spanning elements;
a slide means, having and defining catch means suitable to engage the stud portions of spanning elements, mounted in the housing for sliding movement between a first, stud-locking position where the catch means secures the stud portions of the spanning elements, securing the spanning elements to the housing and thus to the structure, and a second, stud-disengaging, position where the catch means releases the stud portion of the spanning elements, permitting removal of the spanning elements from the housing;
locking means to moving the slide means between, and retaining the slide means at, each of its first, stud-locking, position and its second, stud-disengaging, positions;
a release mechanism manually triggered to act upon the locking means so as to cause the locking means to move the slide means from the first to the second position;
and
a trigger means manually activated for triggering the release mechanism.

9 more elements

A security grille for use on a structure having and defining a multi-sided window opening, the security grille comprising:

solid spanning elements in the shape of elongate regular prisms without differentiated features upon their elongate surfaces nor their ends;
a spanning element first-end support member, affixed to the structure at a first side of the window opening, for selectively receiving and engaging the first end of each of the spanning elements, and
a spanning element second-end support member, affixed to the structure at a second side of the window opening opposite to the first side, for selectively receiving and engaging the second end, opposite to the first end, of each of the spanning elements, the spanning element second-end support member having
a body
attachment means for attaching the body to the structure at a side of the structure's multi-sided window opening;
openings in the body to accept an end portion of each of the spanning elements;
a slide means, having and defining both (i) extension means suitable to butt against the end portion of each of the spanning elements, and (ii) notch means suitable to receive the end portion of each of the spanning elements, mounted in the body for sliding movement between a first position where the extension means holds the end portion of each of the spanning elements in such extension as causes each such spanning element to be simultaneously engage d and held in each of the openings in the second-end support member's body and in the first-end support member, and a second position where the extension means permits the end portion of each of the spanning elements to recess within the openings of the second-end support member's body sufficiently so as to be extracted and released from the first-end support member;
and
locking means for moving the slide means between, and retaining the slide means at, each of its first, spanning element-retaining, position and its second, spanning element-disengaging, positions;
wherein the spanning elements form a security grille over the window opening when their first and their second ends are selectively respectively received and engaged by the first-end and the second-end support members.

7 more elements

Dependencies are inferred from the claim text.