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US 7,246,827 B2Granted
Fail safe/fail secure lock with quick change access window
AssigneeSecurity Door Controls
InventorsArthur Geringer, David Geringer, Richard Geringer
Life of this patent
Estimating the term…
Abstract
An electric door lock interchangeable between fail safe and fail secure modes comprising a housing for receiving a plurality of internal components of the door lock. A window is included in the housing, the window allowing access to the internal components to change the operation of the lock between fail safe an fail secure modes.
Claims8
An electric door lock that is interchangeable between fail safe and fail secure modes, comprising:
- a housing for receiving a plurality of internal components of the door lock, said housing having a removable cover plate;
- and
- a switching mechanism for altering said internal components to change the operation of said lock between fail safe and fail secure modes without removing said cover plate, wherein said housing has a window and wherein said switching mechanism comprises a screw that is accessible through said window and wherein said window is through said cover plate.
Dependencies are inferred from the claim text.