A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A tamper proof lock has a bolt with a retracted position and an extended position. A knob has a first position wherein a key operates the bolt and a second position wherein the key does not operate the bolt. A key plate is in opposition to the knob having a key slot. The knob has a locking collar attached to the shaft of the thumb knob. The locking collar has a locking orifice. A thumb knob plate has a locking pin that engages the locking orifice in the second position, wherein the thumb knob is pulled out from the thumb plate. This also stops a key inserted into the key plate from operating the bolt. As a result, bumping, picking, drilling the lock, or using an unauthorized key will be ineffective to open a door with this invention in the second position.
A tamper proof lock has a bolt with a retracted position and an extended position. A knob has a first position wherein a key operates the bolt and a second position wherein the key does not operate the bolt. A key plate is in opposition to the knob having a key slot. The knob has a locking collar attached to the shaft of the thumb knob. The locking collar has a locking orifice. A thumb knob plate has a locking pin that engages the locking orifice in the second position, wherein the thumb knob is pulled out from the thumb plate. This also stops a key inserted into the key plate from operating the bolt. As a result, bumping, picking, drilling the lock, or using an unauthorized key will be ineffective to open a door with this invention in the second position.
Pick Proof Lock
DENSMORE SCOTT A (author)
2017-08-24
Patent
Electronic Resource
English
IPC:
E05B
LOCKS
,
Schlösser
Pick-proof lock point lock seat structure for sliding door and window
| European Patent Office | 2021