US4491699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Communication apparatus for hostile environments
Assignee: Baroid Technology Inc
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Filing: 1981-04-15
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Granted: 1985-01-01
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Expires: 2001-04-15
Abstract
Abstract A dual communication system is disclosed including a microphone for mounting for use by a wearer of a protective face mask, the output signal from the microphone being communicated to both a speaker system for local, audible broadcast and to a transmitter for remote broadcast by radio signal.
Inventors
- 👤 Martin J. Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:28
CPC Classifications
H; H04; H04R; H04R1/00; H04R1/08; H04R1/083; H04M; H04M1/00; H04M1/02; H04M1/04; H04M1/05; H04R27/00; H04R27/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
160 words
Communication apparatus for use with facial covering comprising: a. first microphone means for mounting relative to such facial covering for use by a wearer of said facial covering; b. transmitter means; c. external speaker means; d. connection means, including cable means and connector means, whereby the output of said first microphone means may be communicated to said external speaker means and to said transmitter means; e. second microphone means external to said facial covering; and f. receptacle means included in said transmitter means for receiving said cable and connector means from said first microphone means; g. wherein said receptacle means is movable between a first configuration, in which said receptacle means does not receive said cable and connector means and does provide communication between said second microphone means and said transmitter means, and a second configuration in which said receptacle means receives said cable and connector means and interrupts said communication from said second microphone means to said transmitter means.
Claim 2
Dependent Claim
160 words
Communication apparatus for use with facial covering comprising: a. first microphone means for mounting relative to such facial covering for use by a wearer of said facial covering; b. transmitter means; c. external speaker means; d. connection means, including cable means and connector means, whereby the output of said first microphone means may be communicated to said external speaker means and to said transmitter means; e. second microphone means external to said facial covering; and f. receptacle means included in said transmitter means for receiving said cable and connector means from said first microphone means; g. wherein said receptacle means is movable between a first configuration, in which said receptacle means does not receive said cable and connector means and does provide communication between said second microphone means and said transmitter means, and a second configuration in which said receptacle means receives said cable and connector means and interrupts said communication from said second microphone means to said transmitter means.
Claim 3
Dependent Claim
10 words
Apparatus as defined in claim 1 further comprising receiver means.
Claim 4
Dependent Claim
30 words
Apparatus as defined in claim 1 further comprising amplifier means for receiving said output from said first microphone means and amplifying said output before communication to said external speaker means.
Claim 5
Dependent Claim
17 words
Apparatus as defined in claim 1 wherein said communication means may be sealed to said transmitter means.
Claim 6
Dependent Claim
111 words
Communication apparatus for use with facial coverings comprising: a. microphone means for mounting relative to such facial covering for use by a wearer of said facial covering; b. transmitter means; c. external speaker means; d. connection means, including cable means and connector means, whereby the output of said microphone means may be communicated to said external speaker means and to said transmitter means; and e. switch means whereby said transmitter means may be selectively joined to said cable and connector means for reception of said microphone means output, and may be selectively connected to second microphone means external to said facial covering for receipt of output from said second microphone means.
Claim 7
Dependent Claim
111 words
Communication apparatus for use with facial coverings comprising: a. microphone means for mounting relative to such facial covering for use by a wearer of said facial covering; b. transmitter means; c. external speaker means; d. connection means, including cable means and connector means, whereby the output of said microphone means may be communicated to said external speaker means and to said transmitter means; and e. switch means whereby said transmitter means may be selectively joined to said cable and connector means for reception of said microphone means output, and may be selectively connected to second microphone means external to said facial covering for receipt of output from said second microphone means.
Claim 8
Dependent Claim
10 words
Apparatus as defined in claim 5 further comprising receiver means.
Claim 9
Dependent Claim
29 words
Apparatus as defined in claim 5 further comprising amplifier means for receiving said output from said microphone means and amplifying said output before communication to said external speaker means.
Claim 10
Dependent Claim
17 words
Apparatus as defined in claim 5 wherein said communication means may be sealed to said transmitter means.
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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) | 1988-01-01 | 1988-07-02 | 1989-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-01 | 1992-07-02 | 1993-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-01 | 1996-07-02 | 1997-01-01 | $7700.00 | Window Closed / Lapsed |