Occupied room indicator
First Claim
1. An apparatus for providing an indication observable by a person located outside of an area, which is at least partially bordered by a door, whenever one or more other persons are in the area, the apparatus comprising:
- (a) means, when actuated, for producing a first signal;
(b) means for mounting the means for producing the first signal on the door, said means for producing the first signal being actuated whenever the door is closed;
(c) means, responsive to the first signal, for producing a second signal whenever one or more persons are in the area; and
(d) means, responsive to the second signal, for providing the indication.
1 Assignment
0 Petitions
Accused Products
Abstract
When installed on a door to a room, e.g. a restroom, or other area where it is desired to monitor occupancy status of the room or other area, a light source (e.g. a light emitting diode) outside the room or area provides a visual signal to those outside the room or area whether it is occupied (flashing) or not (dark). Optionally there is a second light source, or other indicator, inside the room or area that signals, simultaneously with the outside light, to an occupant of the room or area that the device is properly working. Optionally "occupied" and "unoccupied" signals are sent to a remote station to keep a remote observer informed of the occupancy status of an out-of-sight room or area. For example, the remote signalling option can be used by persons to avoid useless trips to a distant restroom that is already occupied. Preferably an infrared sensor mounted in a cylindrical reflector in a casing mounted on the door senses movement of an occupant during a pre-set time period, i.e. window, after the door closes, the sensor'"'"'s signals when the door is open are disabled. The movement of an occupant within the window causes a valid detection signal which latches an oscillator which in turn periodically energizes the light sources, indicating that the room is occupied. When the door opens the oscillator is stopped and the cycle repeats when the door closes.
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Citations
20 Claims
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1. An apparatus for providing an indication observable by a person located outside of an area, which is at least partially bordered by a door, whenever one or more other persons are in the area, the apparatus comprising:
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(a) means, when actuated, for producing a first signal; (b) means for mounting the means for producing the first signal on the door, said means for producing the first signal being actuated whenever the door is closed; (c) means, responsive to the first signal, for producing a second signal whenever one or more persons are in the area; and (d) means, responsive to the second signal, for providing the indication. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An apparatus for providing an visual indication observable by a person located outside of an area, which is at least partially bordered by a door, whenever one or more other persons are in the area, the apparatus comprising:
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(a) means, when actuated, for producing a first signal; (b) means, responsive to the first signal, for producing a second signal whenever one or more persons are in the area; (c) means, responsive to the second signal, for providing the visual indication; (d) casing means for containing all the aforesaid means; (e) bracket means for mounting the casing means to the top of the door; and (f) lever means, extending from the casing means, for being moved whenever the door is closed, movement of the lever actuating said means for producing the first signal. - View Dependent Claims (18, 19, 20)
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Specification