GB1194089A - Improvements in or relating to Telephone Receiving Apparatus - Google Patents
Improvements in or relating to Telephone Receiving ApparatusInfo
- Publication number
- GB1194089A GB1194089A GB4549368A GB4549368A GB1194089A GB 1194089 A GB1194089 A GB 1194089A GB 4549368 A GB4549368 A GB 4549368A GB 4549368 A GB4549368 A GB 4549368A GB 1194089 A GB1194089 A GB 1194089A
- Authority
- GB
- United Kingdom
- Prior art keywords
- headset
- tilted
- circuit
- receiver
- earphones
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/04—Supports for telephone transmitters or receivers
- H04M1/05—Supports for telephone transmitters or receivers specially adapted for use on head, throat or breast
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Headphones And Earphones (AREA)
- Telephone Set Structure (AREA)
Abstract
1,194,089. Headsets. L. R. KAHN. 25 Sept., 1968 [3 Oct., 1967], No. 45493/68. Heading H4J. A headset includes a mercury switch operative in response to tilting movement of the head. A headset 10 (Fig. 1) has two mercury switches 16, 16 responsive to tilting to disconnect or connect receiver circuits. With the headset upright is tilted so that earphone 12 is lower the receiver circuits are disconnected from the earphones 12, 12<SP>1</SP> and the user is substantialy isolated from environmental noise. With the headset tilted so that earphone 12<SP>1</SP> is lower the receiver circuits receive intelligence from microphones 18, 18<SP>1</SP>. A monaural system (not shown) employs a single tilt switch and the output is fed to one or two earphones. Radio input circuits 26, 26<SP>1</SP> and the tilt switches 16, 16<SP>1</SP> may alternatively be arranged so that the wearer hears one circuit with his head tilted in one direction and the other circuit with his head tilted in the other direction. The switches may be angularly adjusted by movement of a pivotal mounting plate 29, 29<SP>1</SP> (see Fig. 1a, not shown). A two-way communication system (Fig. 2) has a mercury switch 60 to connect the receiver circuit 58 to the earphones when the headset 50 is level or tilted in one direction. When tilted in the other direction the transmitter circuit 62 is connected to the microphone 56 by mercury switch 64 and the receiver circuit 58 is disconnected. Set-screws 68, 70 allow either or both the transmitter or receiver circuit to be activated when the headset 50 is level.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US67251367A | 1967-10-03 | 1967-10-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1194089A true GB1194089A (en) | 1970-06-10 |
Family
ID=24698867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4549368A Expired GB1194089A (en) | 1967-10-03 | 1968-09-25 | Improvements in or relating to Telephone Receiving Apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1194089A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005112287A1 (en) * | 2004-04-29 | 2005-11-24 | Sony Ericsson Mobile Communications Ab | Device and method for hands-free push-to-talk functionality |
-
1968
- 1968-09-25 GB GB4549368A patent/GB1194089A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005112287A1 (en) * | 2004-04-29 | 2005-11-24 | Sony Ericsson Mobile Communications Ab | Device and method for hands-free push-to-talk functionality |
| US8095081B2 (en) | 2004-04-29 | 2012-01-10 | Sony Ericsson Mobile Communications Ab | Device and method for hands-free push-to-talk functionality |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |