Door chime

• US 4,833,454 A
• Filed: 01/22/1988
• Issued: 05/23/1989
• Est. Priority Date: 01/22/1988
• Status: Expired due to Term

• Current Assignee: Jay Advertising, Inc. (Interpublic Group of Cos., Inc.)
• Original Assignee: Jay Advertising, Inc. (Interpublic Group of Cos., Inc.)
• Inventors: Pawlik, James P., Erdell, Margaret A.
• Primary Examiner(s): Swann, III, Glen R.
• Application Number:
  US07/147,261
• Time in Patent Office: 487 Days
• Field of Search: 340/545, 340/546, 340/566, 340/693, 340/527, 340/384 E
• US Class Current: 340/546
• CPC Class Codes: G08B 13/08 by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind

Abstract

An audio signal device for a door mounted advertising display, the device includes a signal unit, a battery connected to said signal unit, the unit including a tone generator, a pulse generator connected to control the tone generator, a timer connected to control the time of operation of the pulse generator, and a motion switch connected to energize the timer in response to the motion of the door, the timer further including a circuit for preventing reactivation of the timer for a predetermined period of time.

Claims

1. A self-contained door mounted signal device comprising a housing having an enclosed chamber and an advertising panel on the front and back of said housing,

a printed circuit board mounted in said chamber,

said board including,

means for sensing the motion of the door for generating a signal,

timing means responsive to the signal from said sensing means for establishing a time delay before responding to a second signal from said sensing means,

generating means responsive to the signal from said sensing means for generating a pulse.

emitting means responsive to the pulse from said generating means for emmiting a tone signal,

circuit means for interconnecting said sensing means, said timing means, said pulsing means and said tone emitting means,

and a battery mounted in said chamber and operatively connected to said circuit means for energizing said circuit.

2. The signal device according to claim 1 wherein said timing means and said generating means comprises a dual monostable multivibrator.

3. The signal device according to claim 1 or 2 wherein said sensing means comprises a mercury switch.

4. The signal device according to claim 1 or 2 wherein said generating means comprises a pulse timer.

5. The signal device according to claim 1 or 2 wherein said tone emitting means comprises a piezoelectric audio indicator.

6. The device according to claim 3 wherein said generating means comprises a pulse timer.

7. The device according to claim 3 wherein said tone emitting means comprises a piezo electric audio indicator.

8. The signal device according to claim 7 wherein said timing means comprises a dual mono stable multivilerator, said sensing means comprises a mercury switch, and said generating means comprises a pulse timer and said emitting means comprises a piezo electric audio indicator.

9. An audio signal device for a door mounted advertising display, said display comprising:

a housing,

means for securing said housing to a door, a chamber in said housing,

and said device comprising a battery operated audio signal unit positioned in said chamber,

said unit including a motion switch responsive to movement of the door to activate said unit,

timing means connected to respond to movements of said motion switch to activate said unit for a preset time period before responding to further motion of the door,

a pulse generator connected to respond to said timing means to generate a preset number of pulses,

and a tone generator responsive to said pulse generator pulses to provide an audio signal in response to each pulse.