Patent US4264892A successfully refreshed from Google Patents.
US4264892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alarm device
Assignee: Individual
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Filing: 1978-12-26
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Granted: 1981-04-28
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Expires: 1998-12-26
Abstract
Abstract An alarm device which includes a housing, batteries in the housing, conductors and a light source and an audio signal in parallel to one another and connected to the batteries and switch means between the light source and the audio signal, in series therewith, and normally opened, yet adapted to be closed by movement of the switch to cause, optionally, a light or an audio signal and, alternatively, an attachment for the housing to provide an alternative circuit with a switch in it which is activated by heat, or by closing to a normal position upon release under predetermined conditions to override the signal and to cause an audio signal to warn a person that an intruder has entered a room or that the heat within a given location exceeds a certain predetermined amount.
Inventors
- 👤 Lincoln M. Zonn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:20
CPC Classifications
G; G08; G08B; G08B19/00; G08B19/005
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
367 words
A portable alarm device including: a housing, a horn to create a sound signal; battery means; said battery means and said horn being carried in said housing, first circuit means electrically interconnecting said horn and said battery, said first circuit means including a normally closed first switch means adapted for activating and energizing the horn, said housing being portable and sized to nest within a user's hand, an electric light bulb in said housing, said housing having a light port and including means to hold the bulb out the light port for option use of the device as a flashlight, and second circuit means in the housing including said bulb and said second circuit means being in parallel with (a) said horn and (b) said normally closed first switch means, second switch means in the housing including a movable switch arm and a first and a second terminal and an intermediate neutral station, said first terminal being electrically between said first switch means and said horn and said second terminal being between electrically in series with said electric light bulb and said arm being movable through said neutral station for selectively energizing either (a) the light bulb, (b) the audio device or (c) to remain in the neutral station; said first switch means comprising a flexible bendable conductor means having a jack means at one end, a receptacle in the housing sized to receive said jack for connecting said first switch means electrically in said series with said audio signal and said first switch means including a body, a first portion, a second portion, and resilient means normally urging said first switch means into a switch closed position and said resilient means being yieldably adapted to be inserted between a door and a door jamb to open said first switch means, so that when said switch portions are in close adjacent relation and between a door and a door jamb the first switch means is open but, when the door is opened, the switch, which will close automatically under the influence of said resilient means causing a sound signal from said horn, and hanging means on said housing for attachment of the device to a door knob.
Claim 2
Dependent Claim
367 words
A portable alarm device including: a housing, a horn to create a sound signal; battery means; said battery means and said horn being carried in said housing, first circuit means electrically interconnecting said horn and said battery, said first circuit means including a normally closed first switch means adapted for activating and energizing the horn, said housing being portable and sized to nest within a user's hand, an electric light bulb in said housing, said housing having a light port and including means to hold the bulb out the light port for option use of the device as a flashlight, and second circuit means in the housing including said bulb and said second circuit means being in parallel with (a) said horn and (b) said normally closed first switch means, second switch means in the housing including a movable switch arm and a first and a second terminal and an intermediate neutral station, said first terminal being electrically between said first switch means and said horn and said second terminal being between electrically in series with said electric light bulb and said arm being movable through said neutral station for selectively energizing either (a) the light bulb, (b) the audio device or (c) to remain in the neutral station; said first switch means comprising a flexible bendable conductor means having a jack means at one end, a receptacle in the housing sized to receive said jack for connecting said first switch means electrically in said series with said audio signal and said first switch means including a body, a first portion, a second portion, and resilient means normally urging said first switch means into a switch closed position and said resilient means being yieldably adapted to be inserted between a door and a door jamb to open said first switch means, so that when said switch portions are in close adjacent relation and between a door and a door jamb the first switch means is open but, when the door is opened, the switch, which will close automatically under the influence of said resilient means causing a sound signal from said horn, and hanging means on said housing for attachment of the device to a door knob.
Claim 3
Dependent Claim
58 words
The device as set forth in claim 1 wherein said attachment includes a third switch means in parallel with said second switch means, said third switch means comprising a normally open switch composed of a heat-deformable element yieldable in response to heat to close the circuit and cause energy to flow from the battery to the audio signal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |