GB1347223A - Variable capacitor - Google Patents

Variable capacitor

Info

Publication number
GB1347223A
GB1347223A GB2305472A GB2305472A GB1347223A GB 1347223 A GB1347223 A GB 1347223A GB 2305472 A GB2305472 A GB 2305472A GB 2305472 A GB2305472 A GB 2305472A GB 1347223 A GB1347223 A GB 1347223A
Authority
GB
United Kingdom
Prior art keywords
variable capacitor
capacitor
variable
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
Application number
GB2305472A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1347223A publication Critical patent/GB1347223A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/12—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in capacitance, i.e. electric circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Push-Button Switches (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Input From Keyboards Or The Like (AREA)
GB2305472A 1971-06-17 1972-05-17 Variable capacitor Expired GB1347223A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15411271A 1971-06-17 1971-06-17

Publications (1)

Publication Number Publication Date
GB1347223A true GB1347223A (en) 1974-02-27

Family

ID=22550048

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2305472A Expired GB1347223A (en) 1971-06-17 1972-05-17 Variable capacitor

Country Status (7)

Country Link
US (1) US3693059A (US07714131-20100511-C00038.png)
JP (1) JPS538907B1 (US07714131-20100511-C00038.png)
CA (1) CA958087A (US07714131-20100511-C00038.png)
DE (1) DE2229406C3 (US07714131-20100511-C00038.png)
FR (1) FR2142458A5 (US07714131-20100511-C00038.png)
GB (1) GB1347223A (US07714131-20100511-C00038.png)
IT (1) IT950715B (US07714131-20100511-C00038.png)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4989872A (US07714131-20100511-C00038.png) * 1972-12-29 1974-08-28
US3912988A (en) * 1973-01-29 1975-10-14 Fischer & Porter Co Capacitive detector for an electronic differential pressure transmitter
JPS49111174A (US07714131-20100511-C00038.png) * 1973-02-23 1974-10-23
US3965399A (en) * 1974-03-22 1976-06-22 Walker Jr Frank A Pushbutton capacitive transducer
US3993939A (en) * 1975-01-07 1976-11-23 The Bendix Corporation Pressure variable capacitor
US4110748A (en) * 1976-04-06 1978-08-29 Burroughs Corporation Keyswitch with hysteresis
US4047241A (en) * 1976-04-12 1977-09-06 Burroughs Corporation Capacitive switch
US4095066A (en) * 1976-08-04 1978-06-13 International Business Machines Corporation Hinged flyplate actuator
US4209819A (en) * 1978-03-13 1980-06-24 Key Tronic Corporation Capacitive keyswitch
US4288836A (en) * 1979-05-29 1981-09-08 Xerox Corporation Capacitance controlled keyswitch
DE3018010C2 (de) * 1980-05-10 1985-01-17 Rafi Gmbh & Co Elektrotechnische Spezialfabrik, 7981 Berg Kapazitiver Taster als elektrischer Signalgeber
US4482932A (en) * 1981-07-30 1984-11-13 Topre Corporation Keyboard switch
US4417294A (en) * 1981-08-28 1983-11-22 Illinois Tool Works Inc. Capacitive keyswitch
US4479392A (en) * 1983-01-03 1984-10-30 Illinois Tool Works Inc. Force transducer
GB8303679D0 (en) * 1983-02-10 1983-03-16 Gould Instr Ltd Variable control device
JPS61169916U (US07714131-20100511-C00038.png) * 1985-04-11 1986-10-21
US6999009B2 (en) * 2001-08-31 2006-02-14 Logitech Europe S.A. Sensing keys for keyboard
US9130571B2 (en) * 2007-07-11 2015-09-08 Kyocera Corporation Initializing a capacitive sensing switch for a wireless device
US8416079B2 (en) * 2009-06-02 2013-04-09 3M Innovative Properties Company Switching radio frequency identification (RFID) tags
US10062025B2 (en) 2012-03-09 2018-08-28 Neology, Inc. Switchable RFID tag
DE102017216772A1 (de) 2017-09-21 2019-03-21 Continental Automotive Gmbh Plattenkondensator
JP2023017535A (ja) * 2021-07-26 2023-02-07 株式会社東海理化電機製作所 プッシュスイッチ装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1665616A (en) * 1923-10-26 1928-04-10 Rca Corp Electrical condenser
US1871048A (en) * 1926-02-01 1932-08-09 Dubilier Condenser Corp Adjustable condenser
US2036084A (en) * 1933-12-20 1936-03-31 Gen Electric Coupling
US2109184A (en) * 1937-01-04 1938-02-22 Alois T Sereda Vehicle signal
US3293640A (en) * 1964-05-22 1966-12-20 Chalfin Albert Electronic systems keyboard and switch matrix
US3548138A (en) * 1968-07-18 1970-12-15 Bell Telephone Labor Inc Rolamite pushbutton switch

Also Published As

Publication number Publication date
FR2142458A5 (US07714131-20100511-C00038.png) 1973-01-26
DE2229406A1 (de) 1973-01-04
JPS538907B1 (US07714131-20100511-C00038.png) 1978-04-01
JPS4810568A (US07714131-20100511-C00038.png) 1973-02-09
DE2229406B2 (US07714131-20100511-C00038.png) 1979-05-17
DE2229406C3 (de) 1980-01-24
CA958087A (en) 1974-11-19
US3693059A (en) 1972-09-19
IT950715B (it) 1973-06-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee