Patent US3906472A successfully refreshed from Google Patents.
US3906472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle safety and crime deterrent communication system
Assignee: SAV A LIFE CORP
•
Filing: 1974-06-26
•
Granted: 1975-09-16
•
Expires: 1994-06-26
Abstract
Abstract For use in a vehicle having radio equipment including at least a microphone and a transmitter, apparatus including a second microphone and an adapter for connecting both of said microphones to the transmitter. Switching means are arranged for selectively operating the second microphone, with the switching means and second microphone being disposed for operation without compromising vehicle control and for operation during a distress situation such as a hold-up or the like. Circuitry is provided for enhancing operation of the apparatus by providing timing, amplification, noise suppression and impedance matching functions.
Inventors
- 👤 Joseph G Guadara
- 👤 William R Wesserling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:15
CPC Classifications
G; G08; G08B; G08B25/00; G08B25/01; G08B25/014; H; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/44
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
192 words
A system for communicating between a vehicle and a remote station, comprising: radio apparatus including at least a transmitter carried by the vehicle; first and second microphones selectively operable by an operator of the vehicle for communicating with the remote station: the first microphone arranged for being held by the operator when in use; the second microphone discretely disposed within the vehicle; a first normally open switch connected to the first microphone and the transmitter and supported by said microphone, and operator-operable for being closed to connect the first microphone to the transmitter; a second normally open switch connected to the second microphone and supported within the vehicle, and operator-operable for being closed; and circuit means connected to the second switch, the second microphone and the transmitter, and including means effective upon the second switch being momentarily closed for connecting the second microphone to the transmitter, a third normally open switch, and time control means connected to the third normally open switch and to the connecting means and affecting said connecting means upon the third switch being momentarily closed for maintaining the second microphone connected to the transmitter for a predetermined interval.
Claim 2
Independent Claim
192 words
A system for communicating between a vehicle and a remote station, comprising: radio apparatus including at least a transmitter carried by the vehicle; first and second microphones selectively operable by an operator of the vehicle for communicating with the remote station: the first microphone arranged for being held by the operator when in use; the second microphone discretely disposed within the vehicle; a first normally open switch connected to the first microphone and the transmitter and supported by said microphone, and operator-operable for being closed to connect the first microphone to the transmitter; a second normally open switch connected to the second microphone and supported within the vehicle, and operator-operable for being closed; and circuit means connected to the second switch, the second microphone and the transmitter, and including means effective upon the second switch being momentarily closed for connecting the second microphone to the transmitter, a third normally open switch, and time control means connected to the third normally open switch and to the connecting means and affecting said connecting means upon the third switch being momentarily closed for maintaining the second microphone connected to the transmitter for a predetermined interval.
Claim 3
Dependent Claim
41 words
A system as described by claim 1, wherein the circuit means further includes: means connected to the second switch, the first microphone and the transmitter, and effective upon the second switch being closed for disconnecting the first microphone from the transmitter.
Claim 4
Dependent Claim
29 words
A system as described by claim 1, wherein the circuit means further includes: means effective upon the second switch being closed for amplifying the output of the seconD microphone.
Claim 5
Dependent Claim
37 words
A system as described by claim 1, wherein the circuit means further includes: means connected to the time control means and effective upon the second and third switches being closed, and operator-operable for varying the predetermined interval.
Claim 6
Dependent Claim
33 words
A system as described by claim 3, wherein the circuit means further includes: means connected to the amplifying means and effective upon the second switch being closed, and operator-operable for varying the amplification.
Claim 7
Dependent Claim
34 words
A system as described by claim 1, wherein the circuit means further includes: means effective upon the second switch being closed for matching the impedance of the second microphone to that of the transmitter.
Claim 8
Dependent Claim
32 words
A system as described by claim 1, wherein the circuit means further includes: means effective upon the second switch being closed for suppressing outputs from the second microphone above a predetermined level.
References Cited (Backward Citations)
US1993497A
Cited
US2794857A
Cited
US3371278A
Cited
US3419865A
Cited
US3550001A
Cited
US3611140A
Cited
US3703714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |