US5640147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Child monitoring device
Assignee: CHEK LAWRENCE
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Filing: 1996-01-16
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Granted: 1997-06-17
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Expires: 2016-01-16
Abstract
Abstract A method for remotely monitoring the activities of a minor or dependent child or adult, on command from a parent unit. The child unit contains a sensitive audio microphone to provide the holder of the parent unit the capability to periodically listen to activity in close proximity of the child unit, thereby offering the holder of the parent unit a measure of confidence in the state of well-being of the holder of the child unit. The preferred embodiment provides a means to transmit an alert signal from the child unit to the parent unit in the event of an emergency. The transmission media used to interconnect both units is wireless, and may comprise radio frequency or infrared optical means, or any combination thereof.
Inventors
- 👤 Lawrence Chek
- 👤 Thomas C. Steidel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:11
CPC Classifications
G; G08; G08B; G08B21/00; G08B21/02; G08B21/0202; G08B21/0205; G08B21/0208; G08B21/028; G08B21/0283; G08B21/0286
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
56 words
A system for monitoring the activity of a child, comprising: a monitoring and control means for transmitting at least one system-enabling signal, and for receiving audio signals; and a child-mountable means for transmitting in response to the receipt of at least one of said system-enabling signals any audio detected in the immediate proximity to said child.
Claim 2
Independent Claim
56 words
A system for monitoring the activity of a child, comprising: a monitoring and control means for transmitting at least one system-enabling signal, and for receiving audio signals; and a child-mountable means for transmitting in response to the receipt of at least one of said system-enabling signals any audio detected in the immediate proximity to said child.
Claim 3
Dependent Claim
23 words
The system of claim 1 wherein said monitoring and control means further comprises: a transceiver having a command transmitter and a high-fidelity receiver.
Claim 4
Dependent Claim
38 words
The system of claim 1 wherein said child-mountable means further comprises: a transceiver having a command receiver, a sensitive audio microphone, and a high-fidelity transmitter having its output modulated by said audio signals detected by said audio microphone.
Claim 5
Dependent Claim
38 words
The system of claim 1 wherein said child-mountable means further comprises: a means to transmit an alert signal; and said monitoring and control means further comprises a means to receive said alert signal and to alert an individual.
Claim 6
Dependent Claim
26 words
The system of claim 1 wherein both said monitoring and control, and child-mountable means further comprise means to transmit and receive signals via radio frequency transmissions.
Claim 7
Dependent Claim
25 words
The system of claim 1 wherein both said monitoring and control, and child-mountable means further comprise means to transmit and receive signals via optical transmissions.
Claim 8
Dependent Claim
28 words
The system of claim 1 wherein both said monitoring and control, and child-mountable means further comprise means to transmit and receive signals via external radio frequency communications resources.
Claim 9
Dependent Claim
31 words
The system of claim 1 wherein said child-mountable means is further comprised of a visual indication to confirm that said child-mountable means has been enabled by said monitoring and control means.
Claim 10
Dependent Claim
32 words
The system of claim 1 wherein said child-mountable means further comprises: a means to transmit an alarm to said monitoring and control means if said child-mountable means is removed from said child.
Claim 11
Dependent Claim
35 words
A system as in claim 1 wherein said child-mountable means further comprises: tamper signal means for activating and transmitting a signal in response to any tampering or removal of said child-mountable means from said child.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-06-16 | 2000-12-16 | 2001-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-16 | 2004-12-16 | 2005-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-16 | 2008-12-16 | 2009-06-17 | $7700.00 | Window Closed / Lapsed |