LATCH SECURITY DEVICE

摘要

Disclosed is a security device for securement to a door in association with a latch mechanism having a face plate and knob to selectively prevent unauthorized turning of the latch mechanism and knob. The device includes a plate for securement to the door in association with the face plate of the latch mechanism. A hood element selectively prevents rotation of the latch knob, the hood element being reciprocable relative to the plate means into and out of engagement with the latch knob. The plate and the hood element preventing rotation include cooperating locking mechanisms when the hood element is brought into contact with the latch knob. There is also a release mechanism for releasing the locking mechanisms. Preferably the locking mechanisms are of the pawl and ratchet type.