Patent US4382159A successfully refreshed from Google Patents.
US4382159A
Expired / Lapsed
US
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Blow actuated microphone
Assignee: Individual
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Filing: 1981-05-29
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Granted: 1983-05-03
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Expires: 2001-05-29
Abstract
Abstract In acoustical sound processing equipment, a combination microphone and blow actuated keying and unkeying means. The speaking person blows a first time into a tube to key the processing equipment and blows a second time to unkey the equipment. The person also vocalizes into the tube. The tube is in fluid communication with a chamber which houses the microphone. A blow detector senses the blowing action and triggers a bistable flip-flop which in turn drives a keying relay.
Inventors
- 👤 Robert S. Bowditch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:46
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/44; H04R; H04R3/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
178 words
In an acoustical sound processing device a combination microphone means and blow actuated keying and unkeying means comprising: (a) a plenum chamber defining a pressure release orifice, (b) a conduit means in fluid communication with the chamber means, the conduit means having an open end to permit a speaker to vocalize and blow into the conduit means, (c) a blow detector means with two stable output states, a first and second, adapted to alternate between said states in response to blows of suitable strength which are directed into the conduit means such that for each distinct momentary blow, the output of the blow detector means changes state only once, (d) a means for keying and unkeying the sound processing device when the output of the blow detector means is in the first and second states respectively, (e) a transducer means disposed within the plenum chamber for converting acoustic vibrations to a corresponding varying electrical signal, the transducer means being in electrical communication with the sound processing device for the primary purpose of sending said signal to said device.
Claim 2
Dependent Claim
178 words
In an acoustical sound processing device a combination microphone means and blow actuated keying and unkeying means comprising: (a) a plenum chamber defining a pressure release orifice, (b) a conduit means in fluid communication with the chamber means, the conduit means having an open end to permit a speaker to vocalize and blow into the conduit means, (c) a blow detector means with two stable output states, a first and second, adapted to alternate between said states in response to blows of suitable strength which are directed into the conduit means such that for each distinct momentary blow, the output of the blow detector means changes state only once, (d) a means for keying and unkeying the sound processing device when the output of the blow detector means is in the first and second states respectively, (e) a transducer means disposed within the plenum chamber for converting acoustic vibrations to a corresponding varying electrical signal, the transducer means being in electrical communication with the sound processing device for the primary purpose of sending said signal to said device.
Claim 3
Dependent Claim
70 words
The combination of claim 1 wherein the blow detector comprises: (a) a switching means adapted to momentarily actuate when a speaker blows into the conduit means, (b) a pulse generating means which electrically senses the actuation of the switching means and which produces an electrical pulse in response to said actuation, and (c) a bistable flip-flop means which changes the state of its output in response to the electrical pulse.
Claim 4
Dependent Claim
58 words
The combination of claim 2 wherein the switching means is a pressure actuated switch disposed outside of the plenum chamber but in close proximity to the pressure release orifice such that when pressurized air in the chamber caused by a blow is being released from the chamber by the orifice, the released air exerts pressure on the switch.
Claim 5
Dependent Claim
108 words
The combination of claim 1 wherein the blow detector comprises: (a) an amplifying means for amplifying the transducer electrical signals to a suitable level, (b) means for producing a generally dc voltage substantially corresponding to the magnitude of the amplified transducer signal, (c) a suitable dc voltage reference, (d) means for comparing the dc reference voltage and the produced dc voltage, said means being adapted to output an electrical pulse when the produced voltage momentarily exceeds the reference voltage as when a speaker momentarily blows into the conduit means, and (e) a bistable flip-flop means which changes the state of its output in response to the electrical pulse.
Claim 6
Dependent Claim
24 words
The combination of claim 4 wherein the dc voltage producing means comprises: (a) a signal rectifying means, and (b) a low pass filter means.
Claim 7
Dependent Claim
53 words
The combination of claims 2 or 4 wherein the keying and unkeying means comprises: (a) a relay means with a set of electrical contacts, the state of said contacts being determinative of the state, keyed or unkeyed, of the sound producing device, and (b) an amplifier means for electrically energizing the relay means.
References Cited (Backward Citations)
US1170882A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-02 | 1986-11-01 | 1987-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-02 | 1990-11-01 | 1991-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-02 | 1994-11-01 | 1995-05-03 | $7700.00 | Window Closed / Lapsed |