IT943354B - Interruttore azionato da tocco com prendente un elettrete laminare particolarmente per tastiere di selezione in sistemi telefonici calcolatori elettronici e simili - Google Patents
Interruttore azionato da tocco com prendente un elettrete laminare particolarmente per tastiere di selezione in sistemi telefonici calcolatori elettronici e similiInfo
- Publication number
- IT943354B IT943354B IT71218/71A IT7121871A IT943354B IT 943354 B IT943354 B IT 943354B IT 71218/71 A IT71218/71 A IT 71218/71A IT 7121871 A IT7121871 A IT 7121871A IT 943354 B IT943354 B IT 943354B
- Authority
- IT
- Italy
- Prior art keywords
- electrete
- laminar
- similar
- operated switch
- telephone systems
- Prior art date
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
- H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
- H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
- H01G7/021—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric
- H01G7/023—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric of macromolecular compounds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
- H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
- H01G7/025—Electrets, i.e. having a permanently-polarised dielectric having an inorganic dielectric
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/965—Switches controlled by moving an element forming part of the switch
- H03K17/975—Switches controlled by moving an element forming part of the switch using a capacitive movable element
- H03K17/98—Switches controlled by moving an element forming part of the switch using a capacitive movable element having a plurality of control members, e.g. keyboard
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Signal Processing (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Push-Button Switches (AREA)
- Electronic Switches (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10153670A | 1970-12-28 | 1970-12-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
IT943354B true IT943354B (it) | 1973-04-02 |
Family
ID=22285159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT71218/71A IT943354B (it) | 1970-12-28 | 1971-12-23 | Interruttore azionato da tocco com prendente un elettrete laminare particolarmente per tastiere di selezione in sistemi telefonici calcolatori elettronici e simili |
Country Status (11)
Country | Link |
---|---|
US (1) | US3668417A (xx) |
JP (1) | JPS5436311B1 (xx) |
BE (1) | BE777202A (xx) |
CA (1) | CA1009764A (xx) |
DE (1) | DE2164202C3 (xx) |
ES (1) | ES398773A1 (xx) |
FR (1) | FR2120902A5 (xx) |
GB (1) | GB1380709A (xx) |
IT (1) | IT943354B (xx) |
NL (1) | NL159837B (xx) |
SE (1) | SE377974B (xx) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3751612A (en) * | 1971-08-30 | 1973-08-07 | Colorado Instr Inc | Snap action capacitive type switch |
US3786495A (en) * | 1972-05-17 | 1974-01-15 | Ncr | Stored charge transducer |
US4336529A (en) * | 1980-02-19 | 1982-06-22 | Pitney Bowes Inc. | Postage meter having shielded keyboard to protect against electromagnetic radiation |
US4561002A (en) * | 1982-08-30 | 1985-12-24 | General Electric Company | Capacitive touch switch arrangement |
US4593191A (en) * | 1982-12-29 | 1986-06-03 | At&T Bell Laboratories | Pressure and optical sensitive device with deformable protrusions |
US4456800A (en) * | 1983-05-25 | 1984-06-26 | Allen-Bradley Company | Planar contact array switch having improved ground path for dissipating electrostatic discharges |
DE8900946U1 (xx) * | 1988-09-30 | 1990-02-08 | Siemens Ag, 1000 Berlin Und 8000 Muenchen, De | |
US5835027A (en) * | 1996-11-07 | 1998-11-10 | Tyburski; Robert M. | Residual charge effect traffic sensor |
US6771785B2 (en) * | 2001-10-09 | 2004-08-03 | Frank Joseph Pompei | Ultrasonic transducer for parametric array |
DE102004005954A1 (de) * | 2004-02-02 | 2005-08-18 | E.G.O. Elektro-Gerätebau GmbH | Bedieneinrichtung für ein Elektrogerät mit einem Bedien-Feld und einem Sensorelement darunter sowie Verfahren zum Betrieb der Bedieneinrichtung |
FI117455B (fi) * | 2004-07-07 | 2006-10-13 | Emfit Oy | Elektromekaanisen kontrolliyksikön sähköinen kytkentä |
GB201312879D0 (en) * | 2013-07-18 | 2013-09-04 | Nokia Corp | Apparatuses, methods and computer programs for expanding the use of touch-sensitive input apparatus |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA822821A (en) * | 1969-09-09 | W. Reedyk Cornelis | Directional electret transducer | |
US2610245A (en) * | 1946-02-18 | 1952-09-09 | Robert H Rines | Electret array sensitive to radio waves |
US3118022A (en) * | 1961-08-07 | 1964-01-14 | Bell Telephone Labor Inc | Electroacoustic transducer |
US3290439A (en) * | 1963-04-29 | 1966-12-06 | Willcox | Data encoding keyboard |
US3308253A (en) * | 1965-03-25 | 1967-03-07 | Ibm | Diaphragm switch having a diaphragm supported on an incompressible layer and an elastomer overlaying the diaphragm |
US3503031A (en) * | 1969-02-11 | 1970-03-24 | Control Data Corp | Printed circuit keyboard |
-
1970
- 1970-12-28 US US101536A patent/US3668417A/en not_active Expired - Lifetime
-
1971
- 1971-08-31 CA CA121,796A patent/CA1009764A/en not_active Expired
- 1971-12-17 SE SE7116230A patent/SE377974B/xx unknown
- 1971-12-23 BE BE777202A patent/BE777202A/xx not_active IP Right Cessation
- 1971-12-23 GB GB5990471A patent/GB1380709A/en not_active Expired
- 1971-12-23 DE DE2164202A patent/DE2164202C3/de not_active Expired
- 1971-12-23 IT IT71218/71A patent/IT943354B/it active
- 1971-12-24 ES ES398773A patent/ES398773A1/es not_active Expired
- 1971-12-27 FR FR7146746A patent/FR2120902A5/fr not_active Expired
- 1971-12-27 NL NL7117891.A patent/NL159837B/xx not_active IP Right Cessation
- 1971-12-28 JP JP365272A patent/JPS5436311B1/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
CA1009764A (en) | 1977-05-03 |
DE2164202C3 (de) | 1974-05-09 |
DE2164202B2 (de) | 1973-10-18 |
DE2164202A1 (de) | 1972-07-13 |
NL7117891A (xx) | 1972-06-30 |
ES398773A1 (es) | 1974-08-16 |
SE377974B (xx) | 1975-08-04 |
NL159837B (nl) | 1979-03-15 |
FR2120902A5 (xx) | 1972-08-18 |
JPS5436311B1 (xx) | 1979-11-08 |
GB1380709A (en) | 1975-01-15 |
US3668417A (en) | 1972-06-06 |
JPS4713585A (xx) | 1972-07-13 |
BE777202A (fr) | 1972-04-17 |
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