Latching Locks TRIZ Cases
- Lock Status Indicator Mechanism for Hot-Door Emergency Access
A windowed lock indicator shows locked or unlocked status without touching a hot door handle, speeding emergency access during fires.
- Pivotable Latch Bolt That Stays Locked When Unlocked
A switchable latch head and slide-blocking mechanism keep the bolt engaged when unlocked, enabling electronic openers and quieter closure.
- Door Handle Limiter Integrated With Chain Lock Security
A latch-and-chain limiter blocks the inner door handle from being pushed down, closing a security gap in traditional door chain locks.
- Door Latch Shutter Mechanism Against Lock Bolt Tampering
A synchronized shutter covers the latch opening when the lock bolt retracts, blocking tampering that could stop secure door closure.