CA947384A - Variable capacitive apparatus - Google Patents

Variable capacitive apparatus

Info

Publication number
CA947384A
CA947384A CA124,915A CA124915A CA947384A CA 947384 A CA947384 A CA 947384A CA 124915 A CA124915 A CA 124915A CA 947384 A CA947384 A CA 947384A
Authority
CA
Canada
Prior art keywords
variable capacitive
capacitive apparatus
variable
capacitive
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
CA124,915A
Other versions
CA124915S (en
Inventor
Theodore M. Leno
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.)
AT&T Teletype Corp
Original Assignee
Teletype 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 Teletype Corp filed Critical Teletype Corp
Priority to CA176,698,A priority Critical patent/CA951391A/en
Application granted granted Critical
Publication of CA947384A publication Critical patent/CA947384A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J5/00—Devices or arrangements for controlling character selection
    • B41J5/08—Character or syllable selected by means of keys or keyboards of the typewriter type
    • B41J5/14—Construction of key levers
CA124,915A 1970-12-17 1971-10-12 Variable capacitive apparatus Expired CA947384A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA176,698,A CA951391A (en) 1970-12-17 1973-07-18 Variable capacitive apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9918670A 1970-12-17 1970-12-17

Publications (1)

Publication Number Publication Date
CA947384A true CA947384A (en) 1974-05-14

Family

ID=22273399

Family Applications (1)

Application Number Title Priority Date Filing Date
CA124,915A Expired CA947384A (en) 1970-12-17 1971-10-12 Variable capacitive apparatus

Country Status (6)

Country Link
US (1) US3671822A (en)
CA (1) CA947384A (en)
DE (1) DE2162044C3 (en)
FR (1) FR2118697A5 (en)
GB (1) GB1370488A (en)
IT (1) IT957106B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3760243A (en) * 1972-09-21 1973-09-18 Gen Electric Capacitive keyswitch
JPS5542759B2 (en) * 1973-11-02 1980-11-01
US3931610A (en) * 1973-11-29 1976-01-06 Teletype Corporation Capacitive keyswitch sensor and method
US4034234A (en) * 1975-01-10 1977-07-05 Texas Instruments Incorporated Switching module for solid-state keyboard
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
DE3017944A1 (en) * 1980-05-10 1981-11-12 Rafi Gmbh & Co Elektrotechnische Spezialfabrik, 7981 Berg Magnetic-capacitive switching appts. - has magnetic element brought into proximity of capacitor to alter spacing between capacitor plates
DE3018010C2 (en) * 1980-05-10 1985-01-17 Rafi Gmbh & Co Elektrotechnische Spezialfabrik, 7981 Berg Capacitive button as an electrical signal transmitter
US9030053B2 (en) * 2011-05-19 2015-05-12 Choon Sae Lee Device for collecting energy wirelessly
JP5681694B2 (en) * 2012-12-19 2015-03-11 レノボ・シンガポール・プライベート・リミテッド Method for changing key position of input device, input device and portable computer
US9501105B2 (en) * 2013-09-28 2016-11-22 Intel Corporation Keyboard for an electronic device
JP6686120B1 (en) * 2018-12-13 2020-04-22 レノボ・シンガポール・プライベート・リミテッド Electronics

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE351686C (en) * 1922-04-12 Telephonwerke G M B H Deutsche Adjustable capacitor for high voltage circuits
US2179068A (en) * 1937-12-09 1939-11-07 Sprague Specialties Co Variable condenser
US2438477A (en) * 1940-07-10 1948-03-23 Dodds John Mathieson Tuning circuit for radio transmitters
US2432089A (en) * 1941-11-06 1947-12-09 Sperry Gyroscope Co Inc Variable capacity pick-off for compass systems
US2589351A (en) * 1947-02-27 1952-03-18 Charles N Ehrlich Variable condenser
US2543570A (en) * 1947-03-22 1951-02-27 Gen Motors Corp Thickness gauge
US2744222A (en) * 1952-03-24 1956-05-01 Beckman Instruments Inc Dynamic capacitor
US3183912A (en) * 1962-05-31 1965-05-18 George S Mogilner Diathermy machine
US3230431A (en) * 1962-09-20 1966-01-18 Standard Kollsman Ind Inc Combination feed-through and trimmer capacitor
US3293640A (en) * 1964-05-22 1966-12-20 Chalfin Albert Electronic systems keyboard and switch matrix
CA887267A (en) * 1967-11-23 1971-11-30 A. Smirnov Vladimir Electromagnetic device for electric-circuit control and protection systems
US3488565A (en) * 1968-02-07 1970-01-06 Erwin S Teltscher Ultra-flat variable capacitor assembly

Also Published As

Publication number Publication date
DE2162044A1 (en) 1972-07-06
GB1370488A (en) 1974-10-16
DE2162044C3 (en) 1979-12-06
DE2162044B2 (en) 1979-04-19
FR2118697A5 (en) 1972-07-28
US3671822A (en) 1972-06-20
IT957106B (en) 1973-10-10

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