Modern sliding doors—like those used in banks and shopping centers—often fail during power outages or mechanical defects, especially outside business hours. When this happens, the doors stay open, leaving buildings vulnerable to break-ins. Hiring emergency repair technicians is costly, and backup batteries don’t always last.
Core
Features
This invention provides a simple, reliable way to manually lock a sliding door shut in emergencies. It uses two angled brackets that grip each door panel from the inside, connected by a strong tensioning belt tightened with a common ratchet mechanism (like those used for securing cargo). The belt prevents the doors from sliding open and can only be released from the inside.
Inventive
Step – What’s New
Unlike previous solutions, this device is:
- Completely mechanical and doesn’t rely on power.
- Made from off-the-shelf parts (ratchet, belt, and brackets).
- Designed for quick, one-person
installation from inside the building.
It also includes a cut-resistant guide to prevent intruders from slicing the belt, and foam or textile pads to protect glass doors from damage.
Tangible Benefits
- Cost-effective: Uses widely available, affordable materials.
- Easy to install: One person can secure the door quickly.
- Secure: Can’t be removed or tampered with from outside.
- Protective: Prevents glass scratching or stress from forceful locking.
Broader
Impact
This device offers peace of mind for businesses and property owners, improving building security without expensive systems or emergency repairs. It’s a practical, sustainable backup that extends the safety and usability of existing infrastructure—especially vital during blackouts or disasters.
Bottom
Line
It’s a smart, low-cost upgrade for any sliding door, turning a common vulnerability into a secure barrier—especially when technology fails.