Dead bolt lock system having multiple security features

Details Dead bolt lock system having multiple security features Dead bolt lock system having multiple security features

2006-03-07

2006-03-07

Gall, Lloyd A. (Department: 3676)

Locks

Special application

For closures

C070S210000, C070S283000, C070S422000, C292S092000, C292SDIG022

Reexamination Certificate

active

07007524

ABSTRACT:
A dead bolt lock system which may use one or more security locks in conjunction with a dead bolt to provide various levels of security access to a door. Generally, the lock system tests the condition of the security lock or locks before allowing retraction of the dead bolt. An inside escape lever is provided as a life safety feature to allow egress from the secured area regardless of the conditions of the security locks. A trigger hold back device maintains the dead bolt in a retracted position until the door has been opened and closed again. Lock covers include associated locked-on-by-combination and relock features. A night latch or lock down feature is provided to prevent access, including authorized access through the outside of the lock system. A force blocking assembly is provided to prevent force applied to the dead bolt from harming internal components of the system. A torque override clutch prevents excessive torque applied to the outside door handle from harming internal lock system components.

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