The Story Behind the Invention of the No Knock Security Lock
I’m an investor with rental properties, and over the years, I’ve experienced several break-ins at my rentals, especially in between tenants (or while vacant). Eventually, I got tired of dealing with theft and the lack of effective security options. The breaking point came when my young son was home alone one day. Two men rang the doorbell, and since he didn’t recognize them, he chose not to answer, thinking they were just salesmen. Moments later, the same men attempted to break down the door. My son had to threaten them with a baseball bat to make them leave. It was a terrifying moment—he could have been hurt or worse if they had realized he was alone. That incident pushed me to take action. I set out to design the strongest door lock I could, one that would be both highly effective and aesthetically pleasing for any home. That’s how the No Knock hinge pin and bracket system was created. The pins are made of stainless steel, stronger than typical door hinge pins and resistant to corrosion. The bracket is designed to be as discreet as possible while securely holding one of the pins, attaching it to both the door frame and a wooden security bar. The bar can be cut to fit your specific door size, reducing cost while increasing flexibility. It has been tested to withstand over 3 tons of pressure thanks to its flat-lay design. The steel bracket is built for strength, with screws driven into the door frame at a 90-degree angle to prevent stripping when force is applied from the outside. The hinge bracket I developed will fit freely in between a 2.5mm or a .09 inch gap between the door and door frame without any sanding. ( .09 inches is the size of a US dime and penny together.) and is the easiest to install of any similar product. The wooden bar is versatile and can be cut to any length for any size door. The No Knock door lock is built to resist forced entry, including door kicks and battering rams. It provides real security and peace of mind-
—- give one to Grandma, and she will thank you!
The Problem and The solution
Cons
A door with both a deadbolt lock and a lock in the doorknob (often called a key-in-knob lock) offers enhanced security, but there are some disadvantages to this setup:
Increased Complexity
Managing two separate locks can be inconvenient. You may need to use two different keys or perform multiple actions to lock or unlock the door, which can be cumbersome, especially in a rush or emergency.
Potential for Key Confusion
If the deadbolt and doorknob lock require different keys, it can lead to confusion or difficulty finding the right key, particularly in low-light conditions or for people with multiple keys.
Higher Maintenance
Two locks mean more components that can wear out, jam, or malfunction over time, potentially doubling maintenance or repair costs compared to a single-lock system
Installation and Cost
Installing both a deadbolt and a doorknob lock can be more expensive due to the cost of two locking mechanisms and the labor required for proper installation. The door and frame may also need reinforcement to accommodate both.
Aesthetic Impact
Having two locks can make the door appear cluttered or less visually appealing, especially if the locks don’t match in style or finish.
False Sense of Security
While two locks can enhance security, the doorknob lock is generally less secure than a deadbolt. If the doorknob lock is of poor quality or easily compromised (e.g., through picking or bumping), it may not add meaningful protection, leading to overconfidence in the door’s security.
Emergency Egress Concerns
In an emergency, such as a fire, unlocking both a deadbolt and a doorknob lock can slow down evacuation, especially if the keys aren’t readily available or if someone unfamiliar with the system is trying to exit.
Vulnerability to Specific Attacks
Doorknob locks are often easier to bypass (e.g., via lock picking, drilling, or brute force) than high-quality deadbolts. If the deadbolt is not properly installed (e.g., with a shallow strike plate or weak screws), the added security of two locks may be undermined.
The door can be kicked in very quickly, giving you no reaction time. An intruder can be through the door and facing you in seconds. There’s no way to call 911 and not even enough time to reach your protection. Time is of the essence in a break-in, and the longer it takes for them to get inside or if they can’t get in at all the better off you are.
Pros
The No Knock Security Lock gives you precious time when it matters most. Engineered to withstand force and eliminate weak points, it’s your first line of defense against break-ins—secure and built to last.
The No Knock Security Lock gives you the time you need. It’s your first line of defense against break-ins.
The bar withstands over 6,000 lbs of pressure.
The hinge pin is a patented triple interlocking pin, locking the door to the bar and the bar to the door frame.
No key to lose or misplace.
The only barricade lock for French or double doors.
Custom bar can be painted or wood-stained to match your décor.
The No Knock is installed within the hinges, which are screwed into the side of the door and house frame. This design holds the weight of the doors and provides the strongest location to attach locks, protecting against break-ins because the screws act like nails instead of stripping out.
Deadbolts keep out good guys. No Knock keeps out the bad.
Meet our people
Emma earned her BSS in Psychology and BSC in Management from Santa Clara University. She joined Us after 4+ years in venture.
John is a proud graduate of Teachers College's Instructional Design and Technology program and can usually be found gaming, reading, playing music
Emma earned her BSS in Psychology and BSC in Management from Santa Clara University. She joined Us after 4+ years in venture.
William loves tackling the legal issues that arise as transforms education. He used to have hobbies like traveling, but now his kids are his hobby.