Innovative mechanical system for opening iron security bars in emergencies

Abstract

A mechanical system designed to open iron security bars fixed on windows during emergencies. The system operates through two activation methods: manual and automatic, ensuring rapid escape during fires. It includes a heat-sensitive mechanism that automatically triggers the opening without the need for external power sources. This innovation complies with international fire safety standards and is suitable for retrofitting existing windows or installing in new ones across various building types.

Description

[0001] Innovative Mechanical System for Opening Iron Security Bars in Emergencies

[0002] 1. Detailed Description:

[0003] The invention is a mechanical system designed to quickly and safely open iron security bars fixed on windows during emergencies. The system operates through either manual or automatic activation, ensuring ease of escape without requiring external power sources such as electricity or electromagnetic systems. It automatically activates when exposed to high heat from flames, causing the security bars to open in case of fire.

[0004] 2, The system consists of:

[0005] A metal chassis containing:

[0006] Two internal tension springs (hidden from view).

[0007] A metal wire enclosed within metal pipes, designed according to the required dimensions.

[0008] Two side hinges reinforced with push springs.

[0009] A metal handle connected to the wire, which pulls the springs to release the security bars. The handle can:

[0010] Be left without a lock for manual activation.

[0011] Or include a numbered lock that must be removed before opening.

[0012] Additional Components:

[0013] An emergency box:

[0014] Operates mechanically and automatically when exposed to fire.

[0015] Contains a heat-sensitive combustible element connected to the wire, which releases the security bars without human intervention. A specialized mechanism:

[0016] Includes a metal balance pin attached on one side to the wire (connected to the bars) and on the other side to a combustible rubber strip that retracts the tension spring when burned.

[0017] Operation Mechanism:

[0018] The security bars can be opened through two methods:

[0019] 1. Manual activation using the handle or emergency button.

[0020] 2. Automatic activation when exposed to heat from flames.

[0021] 4. Drawings:

[0022] Schematic diagrams illustrating:

[0023] The complete system design .

[0024] Internal mechanisms (springs, wire, and emergency box) .

[0025] Activation methods (manual and automatic) .

[0026] 6. Additional Notes:

[0027] This innovation complies with the recommendations of the National Fire Protection Association (NFPA), providing additional safety for buildings, and is a pioneering solution that meets the Saudi Building Code requirements, Section 310.4 (1101). Additionally, this system aids civil defense teams in accessing burning buildings quickly and effortlessly, eliminating the need to cut security bars with rescue saws or electric saws, thus saving precious time and enhancing the effectiveness of rescue operations.

Claims

AMENDED CLAIMS received by the International Bureau on 16 February 2026 (16.02.2026)Claims

1. A fully mechanical emergency release system for fixed external iron window security bars, comprising: a rigid metal chassis permanently mounted to a window frame; at least two internal tension springs housed within the chassis; a continuous metal retaining wire enclosed within metal guide pipes; at least two side hinges reinforced with push springs configured to outwardly displace the security bars upon release; and a single mechanical retaining element maintaining the security bars in a closed position; wherein: a manual metal handle is directly connected to the retaining wire and configured to release the retaining element; an emergency box is provided and is spatially separated from the retaining element by an elongated mechanical transmission path defined by the retaining wire; the emergency box contains a combustible rubber-based strip; the combustible rubber-based strip is mechanically connected to a metal balance pin linked to the retaining wire; destruction of the combustible rubber-based strip releases the balance pin, thereby retracting the retaining wire and releasing the retaining element; both the manual metal handle and the emergency box independently act on the same retaining element through the same continuous mechanical transmission path; and the system is entirely free of electrical components.

2. The system of claim 1, wherein the combustible rubber-based strip undergoes complete structural degradation under fire exposure, thereby releasing the balance pin without residual obstruction that could impede retraction of the retaining wire.

3. The system of claim 1, wherein the emergency box is positioned within a protected interior space such that activation occurs before thermal deformation of the external iron security bars.[0001]Statement under Article 19(1)[0002]The amendments to Claims 1-3 further clarify the structural and functional relationship between the manual release mechanism and the heat-activated emergency box.[0003]In particular, the amended claims explicitly define that both the manual metal handle and the emergency box act independently on the same single mechanical retaining element through the same continuous mechanical transmission path defined by the retaining wire. The amendments also clarify the spatial separation between the emergency box and the retaining element by defining an elongated mechanical transmission path, and further specify that the emergency box is positioned within a protected interior space such that activation occurs prior to thermal deformation of the external iron security bars.[0004]These amendments do not introduce new subject matter and are fully supported by the description and drawings as originally filed.