US3683130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Headset with circuit control
Assignee: KAHN RES LAB
•
Filing: 1970-08-19
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Granted: 1972-08-08
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Expires: 1990-08-19
Abstract
Abstract A headset for receiving sound derived from electrical currents. In addition to the usual earphones, the headset includes two single-pole, single-throw mercury switches which are connected in series with portions of the circuit supplying the earphones. The earphones are provided with foam plastic covers to shield the user from ambient noise. The mercury switches are mounted on the headset spring band and are operated by tilting the head of the user to the right or left side.
Inventors
- 👤 Leonard R Kahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:23
CPC Classifications
H; H04; H04R; H04R5/00; H04R5/033; H04R5/0335; H04R1/00; H04R1/10; H04R1/1041; H04R1/1008
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
121 words
A headset which includes two earphones comprising: two mercury switches mounted on the headset and arranged to open and close when the headset is tilted to the right or left by a person having the headset mounted on his head; a first transmission circuit connected to one of the earphones and one of the mercury switches for energizing the first circuit when the switch is closed; a second transmission circuit connected to the other of said earphones and the other mercury switch for energizing the second circuit when the other switch is closed; each of said transmission circuits including at least one amplifier and at least one electrical wave filter for eliminating noise and frequency waves outside a desired frequency pass-band.
Claim 2
Dependent Claim
121 words
A headset which includes two earphones comprising: two mercury switches mounted on the headset and arranged to open and close when the headset is tilted to the right or left by a person having the headset mounted on his head; a first transmission circuit connected to one of the earphones and one of the mercury switches for energizing the first circuit when the switch is closed; a second transmission circuit connected to the other of said earphones and the other mercury switch for energizing the second circuit when the other switch is closed; each of said transmission circuits including at least one amplifier and at least one electrical wave filter for eliminating noise and frequency waves outside a desired frequency pass-band.
Claim 3
Dependent Claim
33 words
A headset as claimed in claim 1 wherein two microphones are secured to the headset, each of said microphones being connected respectively to one of said transmission circuits to pick up ambient sounds.
Claim 4
Dependent Claim
25 words
A headset as claimed in claim 2 wherein each of said microphones is mounted adjacent to an earphone on a portion of the head band.
Claim 5
Dependent Claim
27 words
A headset as claimed in claim 3 wherein each of said microphones is secured to the headband by a sound deadening material to eliminate mechanical vibrational feedback.
Claim 6
Dependent Claim
24 words
A headset as claimed in claim 1 wherein said wave filters each pass only frequency waves within the range of 300 to 2,500 hertz.
Claim 7
Dependent Claim
29 words
A headset as claimed in claim 1 wherein said transmission circuits each include a suppression type filter for suppressing a sound composed of a narrow band of frequency waves.
Claim 8
Dependent Claim
28 words
A headset as claimed in claim 1 wherein one of the transmission circuits is a radio receiving circuit and the other transmission circuit is a radio transmitting circuit.
Claim 9
Dependent Claim
102 words
A headset which includes at least one earphone carried by a flexible head conforming band comprising: at least one mercury switch mounted on the headset and arranged to open and close when the headset is tilted to the right or left by the lateral motion of the head of the user, at least one transmission circuit connected to an earphone, and a mercury switch for supplying current to the transmission circuit when the switch is closed, said transmission circuit including at least one amplifier and at least one electrical wave filter for eliminating noise and frequency waves outside a desired frequency pass-band.
Claim 10
Dependent Claim
102 words
A headset which includes at least one earphone carried by a flexible head conforming band comprising: at least one mercury switch mounted on the headset and arranged to open and close when the headset is tilted to the right or left by the lateral motion of the head of the user, at least one transmission circuit connected to an earphone, and a mercury switch for supplying current to the transmission circuit when the switch is closed, said transmission circuit including at least one amplifier and at least one electrical wave filter for eliminating noise and frequency waves outside a desired frequency pass-band.
Claim 11
Dependent Claim
34 words
A headset as claimed in claim 8 wherein each of said mercury switches are adjustably mounted on said flexible band whereby they may be turned from a normally on to a normally off position.
Claim 12
Dependent Claim
29 words
A headset as claimed in claim 9 wherein said mercury switches are adjustably mounted on the head band so as to be open when the headset is held erect.
Claim 13
Dependent Claim
26 words
A headset as claimed in claim 8 wherein said earphones are each housed in a sound deadening material such as foam rubber to eliminate ambient sounds.
Claim 14
Dependent Claim
30 words
A headset as claimed in claim 11 wherein said mercury switches are adjustably mounted on the head band so as to be closed when the head set is held erect.
Claim 15
Dependent Claim
88 words
A headset which includes at least one earphone carried by a flexible head conforming band comprising: a mercury switch mounted on the headset and arranged to open and close when the headset is held erect upon the user''s head or tilted to one side; a transmitter-receiver circuit connected to the earphone in series with the mercury switch for energizing the receiver portion of said circuit when the head is held erect, and for energizing the transmitter portion of said circuit when the head is tilted to one side.
Claim 16
Dependent Claim
88 words
A headset which includes at least one earphone carried by a flexible head conforming band comprising: a mercury switch mounted on the headset and arranged to open and close when the headset is held erect upon the user''s head or tilted to one side; a transmitter-receiver circuit connected to the earphone in series with the mercury switch for energizing the receiver portion of said circuit when the head is held erect, and for energizing the transmitter portion of said circuit when the head is tilted to one side.
References Cited (Backward Citations)
US2899499A
Cited
US3011040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |