Patent US5548810A successfully refreshed from Google Patents.
US5548810A
Expired / Lapsed
US
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Hands-free two-way radio communication system
Assignee: SAFE PURSUIT Inc 322 BOONE AVENUE
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Filing: 1994-03-30
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Granted: 1996-08-20
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Expires: 2014-03-30
Abstract
Abstract The hands-free, two-way communication radio includes a multiple channel transmitter/receiver having one of the channels designated a primary communication channel. The transmitter/receiver is also operable in a scan mode to scan multiple channels for communication signals. The radio also includes an interface operatively connected to the multiple channel transmitter/receiver and a hands-free microphone operatively connected to the transmitter/receiver through the interface. A foot pedal actuator is provided for keying the hands-free microphone to allow transmission of a message over the multiple channel transmitter/receiver. Further, the radio includes a switching mechanism operative in response to actuation of the foot pedal for providing a control signal to the multiple channel transmitter/receiver. This control signal results in the multiple channel transmitter/receiver switching to the primary communication channel for transmission of the message. The invention also includes the combination of the interface, hands-free microphone and foot pedal actuator and switching system for retrofit conversion of a standard radio to hands-free operation.
Inventors
- 👤 Donnie L. Riddell
- 👤 Fred R. Shepherd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:47
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/44; B; B60; B60R; B60R11/00; B60R11/02; B60R11/0205; B60R11/0247; B60R11/0264; H03; H03J; H03J7/00; H03J7/18; H04B1/3822; B60R2011/0001; B60R2011/0003; B60R2011/0005; B60R2011/0007; B60R2011/0029; B60R2011/0035; B60R2011/0288
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
109 words
A radio allowing hands-free, two-way communication, comprising: a multiple channel transmitter/receiver, having one channel designated a primary communication channel, operable in a scan mode to scan multiple channels for communication signals; an interface operatively connected to said multiple channel transmitter/receiver; a hands-free microphone operatively connected to said multiple channel transmitter/receiver through said interface; a foot pedal actuator for keying said hands-free microphone to allow transmission of a message over said multiple channel transmitter/receiver; and means operative in response to said foot-pedal actuator for providing a control signal to said multiple channel transmitter/receiver resulting in said multiple channel transmitter/receiver switching to said primary communication channel for transmission of the message.
Claim 2
Dependent Claim
109 words
A radio allowing hands-free, two-way communication, comprising: a multiple channel transmitter/receiver, having one channel designated a primary communication channel, operable in a scan mode to scan multiple channels for communication signals; an interface operatively connected to said multiple channel transmitter/receiver; a hands-free microphone operatively connected to said multiple channel transmitter/receiver through said interface; a foot pedal actuator for keying said hands-free microphone to allow transmission of a message over said multiple channel transmitter/receiver; and means operative in response to said foot-pedal actuator for providing a control signal to said multiple channel transmitter/receiver resulting in said multiple channel transmitter/receiver switching to said primary communication channel for transmission of the message.
Claim 3
Dependent Claim
28 words
The radio as set forth in claim 1, further including a second microphone including a press-to-talk transmission switch operatively connected to said multiple channel transmitter/receiver through said interface.
Claim 4
Dependent Claim
18 words
The radio set forth in claim 2, wherein said foot pedal actuator is a double pole/double throw switch.
Claim 5
Dependent Claim
52 words
The radio set forth in claim 3, wherein said radio further includes a control signal line and a microphone transmission line, said double pole/double throw switch including a normally closed circuit in said control signal line and a normally open circuit connected to said microphone transmission line leading to said hands-free microphone.
Claim 6
Dependent Claim
38 words
The radio set forth in claim 4, further including a power input line to said hands-free microphone, a signal input line to said transmitter/receiver and a capacitor for coupling said power input line and said signal input line.
Claim 7
Dependent Claim
17 words
The radio set forth in claim 5, wherein said capacitor is rated at 0.01 μf, 50 V.
Claim 8
Dependent Claim
25 words
The radio set forth in claim 5, further including a resistor in said power input line to provide proper input voltage to said hands-free microphone.
Claim 9
Dependent Claim
24 words
The radio as set forth in claim 5, further including a fuse in said power input line to provide surge and short circuit protection.
Claim 10
Independent Claim
124 words
An apparatus for providing hands-free operating capability to a two-way radio including a multiple channel transmitter/receiver and press-to-talk microphone and having one channel designated a primary communication channel while also being operable in a scan mode to scan multiple channels for communication signals, said apparatus comprising: an interface operatively connected to said multiple channel transmitter/receiver; a hands-free microphone operatively connected to said multiple channel transmitter/receiver through said interface; a foot pedal actuator for keying said hands-free microphone to allow transmission of a message over said multiple channel transmitter/receiver; and means operative in response to said foot-pedal actuator for providing a control signal to said multiple channel transmitter/receiver resulting in said multiple channel transmitter/receiver switching to said primary communication channel for transmission of said message.
Claim 11
Independent Claim
124 words
An apparatus for providing hands-free operating capability to a two-way radio including a multiple channel transmitter/receiver and press-to-talk microphone and having one channel designated a primary communication channel while also being operable in a scan mode to scan multiple channels for communication signals, said apparatus comprising: an interface operatively connected to said multiple channel transmitter/receiver; a hands-free microphone operatively connected to said multiple channel transmitter/receiver through said interface; a foot pedal actuator for keying said hands-free microphone to allow transmission of a message over said multiple channel transmitter/receiver; and means operative in response to said foot-pedal actuator for providing a control signal to said multiple channel transmitter/receiver resulting in said multiple channel transmitter/receiver switching to said primary communication channel for transmission of said message.
Claim 12
Dependent Claim
19 words
The apparatus as set forth in claim 9 wherein said foot pedal actuator is a double pole/double throw switch.
Claim 13
Dependent Claim
49 words
The apparatus set forth in claim 10, further including a control signal line and a microphone transmission line said double pole/double throw switch having a normally closed circuit in said control signal line and a normally open circuit connected to said microphone transmission line leading to said hands-free microphone.
Claim 14
Dependent Claim
38 words
The apparatus set forth in claim 11, further including a power input line to said hands-free microphone, a signal input line to said transmitter/receiver and a capacitor for coupling said power input line and said signal input line.
Claim 15
Dependent Claim
17 words
The apparatus set forth in claim 12, wherein said capacitor is rated at 0.01 μf, 50 V.
Claim 16
Dependent Claim
25 words
The apparatus set forth in claim 12, further including a resistor in said power input line to provide proper input voltage to said hands-free microphone.
Claim 17
Dependent Claim
24 words
The apparatus as set forth in claim 12, further including a fuse in said power input line to provide surge and short circuit protection.
Claim 18
Dependent Claim
118 words
An interface for operatively connecting a hands-free microphone through a foot controlled actuator to a two-way radio including a multiple channel transmitter/receiver and press-to-talk microphone, the radio having one channel designated a primary communication channel while also being operable in a scan mode to scan multiple channels for communication signals, said interface comprising: a junction box including a shield line, a microphone transmission line, a signal input line and a control signal line; first means for operatively connecting said shield line, microphone transmission line, signal input line and control signal line to said transmitter/receiver and said press-to-talk microphone; and second means for operatively connecting said shield line, microphone transmission line and control signal line to said foot actuator.
Claim 19
Dependent Claim
118 words
An interface for operatively connecting a hands-free microphone through a foot controlled actuator to a two-way radio including a multiple channel transmitter/receiver and press-to-talk microphone, the radio having one channel designated a primary communication channel while also being operable in a scan mode to scan multiple channels for communication signals, said interface comprising: a junction box including a shield line, a microphone transmission line, a signal input line and a control signal line; first means for operatively connecting said shield line, microphone transmission line, signal input line and control signal line to said transmitter/receiver and said press-to-talk microphone; and second means for operatively connecting said shield line, microphone transmission line and control signal line to said foot actuator.
Claim 20
Dependent Claim
30 words
The interface as set forth in claim 16, wherein said interface further includes a power input line and means for operatively connecting said power input line to said hands-free microphone.
Claim 21
Dependent Claim
25 words
The interface set forth in claim 17, wherein said interface further includes a capacitor for coupling said power input line and said signal input line.
Claim 22
Dependent Claim
17 words
The interface set forth in claim 18, wherein said capacitor is rated at 0.01 μf, 50 V.
Claim 23
Dependent Claim
25 words
The interface set forth in claim 17, further including a resistor in said power input line to provide proper input voltage to said hands-free microphone.
Claim 24
Dependent Claim
24 words
The interface as set forth in claim 17, further including a fuse in said power input line to provide surge and short circuit protection.
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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) | 1999-08-20 | 2000-02-19 | 2000-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-20 | 2004-02-19 | 2004-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-20 | 2008-02-19 | 2008-08-20 | $7700.00 | Window Closed / Lapsed |