Patent US4622544A successfully refreshed from Google Patents.
US4622544A
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Low battery indicator
Assignee: Lifeline Systems Inc
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Filing: 1985-05-13
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Granted: 1986-11-11
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Expires: 2005-05-13
Abstract
Abstract An emergency response system in which the low battery condition of a wireless help unit is automatically detected and indicated at a receiver. The help unit provides, as part of the transmitted signal, a signal indication of battery condition. The received signal is decoded and, upon detection of a low battery signal indication, a visual and/or audible output indication denotes this condition. The low battery indication at the receiver remains on until a transmission is received from the help unit when containing a fresh battery replacement.
Inventors
- 👤 Theodore Bially
- 👤 Marc W. Ditz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:38
CPC Classifications
G; G01; G01R; G01R19/00; G01R19/165; G01R19/16533; G01R19/16538; G01R19/16542; G01R31/00; G01R31/36; G01R31/3644; G01R31/3648; G08; G08B; G08B29/00; G08B29/18; G08B29/181
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
192 words
An emergency response system comprising: a help unit for transmitting a signal to a receiver in response to manual actuation of the unit, the signal containing data identifying the unit and data signifying the condition of the unit battery; a receiver including: means for receiving the signal transmitted from the help unit to set timer means upon detection of a valid code from the help unit; timer means providing an output signal defining a reset interval; an indicator operative in response to the output signal from the timer means operative to signify the reset interval; latch means providing an output signal to an indicator which provides an output indication of low battery condition; means operative in response to the received signal from the help unit to set the latch means upon detection of low battery data in the received signal; output means triggered upon the cessation of the output signal from the timer means to cause an emergency signal; and means for resetting the timer means during the reset interval, the low battery latch means remaining latched until receipt of a transmitted signal from the help unit containing no low battery data.
Claim 2
Dependent Claim
192 words
An emergency response system comprising: a help unit for transmitting a signal to a receiver in response to manual actuation of the unit, the signal containing data identifying the unit and data signifying the condition of the unit battery; a receiver including: means for receiving the signal transmitted from the help unit to set timer means upon detection of a valid code from the help unit; timer means providing an output signal defining a reset interval; an indicator operative in response to the output signal from the timer means operative to signify the reset interval; latch means providing an output signal to an indicator which provides an output indication of low battery condition; means operative in response to the received signal from the help unit to set the latch means upon detection of low battery data in the received signal; output means triggered upon the cessation of the output signal from the timer means to cause an emergency signal; and means for resetting the timer means during the reset interval, the low battery latch means remaining latched until receipt of a transmitted signal from the help unit containing no low battery data.
Claim 3
Dependent Claim
156 words
An emergency system comprising: a help unit for transmitting a signal to a receiver in response to manual actuation of the unit, the signal containing data identifying the unit and data signifying the condition of the unit battery; a receiver including: first means operative upon receipt of the signal transmitted from the help unit to provide a reset interval upon detection of a valid code from the help unit; indicator means providing an output indication of low battery condition; second means operative in response to the received signal from the help unit to energize the indicator means upon detected of low battery data in the received signal; output means operative upon termination of the reset interval to cause an emergency output; and means for resetting the first means during the reset interval, the second means remaining operative to energize the indicator means until a transmitted signal from the help unit is received signifying a fresh battery.
Claim 4
Dependent Claim
156 words
An emergency system comprising: a help unit for transmitting a signal to a receiver in response to manual actuation of the unit, the signal containing data identifying the unit and data signifying the condition of the unit battery; a receiver including: first means operative upon receipt of the signal transmitted from the help unit to provide a reset interval upon detection of a valid code from the help unit; indicator means providing an output indication of low battery condition; second means operative in response to the received signal from the help unit to energize the indicator means upon detected of low battery data in the received signal; output means operative upon termination of the reset interval to cause an emergency output; and means for resetting the first means during the reset interval, the second means remaining operative to energize the indicator means until a transmitted signal from the help unit is received signifying a fresh battery.
Claim 5
Dependent Claim
17 words
The system of claim 2 in which the first means includes timer means defining the reset interval.
Claim 6
Dependent Claim
55 words
The system of claim 3 in which the second means includes: latch means set in response to the received signal from the help unit containing low battery data; and gate means operative in response to a signal from the latch means to energize the indicator means to provide an output indication of low battery condition.
Claim 7
Dependent Claim
40 words
The system of claim 4 wherein the output means includes: second latch means operative upon termination of the reset interval to provide an output signal; and relay means operative in response to the output signal to cause an emergency signal.
Claim 8
Dependent Claim
16 words
The system of claim 5 wherein the means for resetting includes a manually operable reset switch.
Claim 9
Dependent Claim
32 words
The system of claim 6 wherein the indicator means includes: a lamp; and means for causing the lamp to flash in the presence of a low battery signal from the second means.
Claim 10
Dependent Claim
22 words
The system of claim 7 including an output indicator providing an output indication of an emergency output provided by the output means.
Claim 11
Dependent Claim
106 words
For use in an emergency response system in which a wireless help unit transmits a signal to a receiver for initiating an emergency signal after a predetermined time interval, means in the receiver for denoting a low battery condition for a battery in the help unit, said means comprising: means for deriving from the signal transmitted by the help unit data signifying the condition of the battery; means operative upon detection of low battery data to provide an output indication of low battery condition; means for resetting said operative means only after receipt of a signal from the help unit containing data signifying a fresh battery.
Claim 12
Dependent Claim
106 words
For use in an emergency response system in which a wireless help unit transmits a signal to a receiver for initiating an emergency signal after a predetermined time interval, means in the receiver for denoting a low battery condition for a battery in the help unit, said means comprising: means for deriving from the signal transmitted by the help unit data signifying the condition of the battery; means operative upon detection of low battery data to provide an output indication of low battery condition; means for resetting said operative means only after receipt of a signal from the help unit containing data signifying a fresh battery.
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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) | 1989-11-10 | 1990-05-12 | 1990-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-10 | 1994-05-12 | 1994-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-10 | 1998-05-12 | 1998-11-11 | $7700.00 | Window Closed / Lapsed |