A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A doorknob indicating system includes an exterior doorknob disposed on an interior side of a door, an interior doorknob disposed on an exterior side of the door, an LED on an escutcheon of said exterior doorknob, a user interface on an escutcheon of said interior doorknob, a source of electrical power, and a controller. The LED, the user interface, and the source of electrical power are operatively connected to the controller. The controller is programmed to illuminate the LED for one or more determined time intervals based upon an input received by the user interface.
A doorknob indicating system includes an exterior doorknob disposed on an interior side of a door, an interior doorknob disposed on an exterior side of the door, an LED on an escutcheon of said exterior doorknob, a user interface on an escutcheon of said interior doorknob, a source of electrical power, and a controller. The LED, the user interface, and the source of electrical power are operatively connected to the controller. The controller is programmed to illuminate the LED for one or more determined time intervals based upon an input received by the user interface.
Doorknob indicating system
MAHONEY CORY (author)
2019-01-01
Patent
Electronic Resource
English