GB1552444A - Keyboard with depressible keys for electric or electronic machines - Google Patents

Keyboard with depressible keys for electric or electronic machines

Info

Publication number: GB1552444A
Authority: GB; United Kingdom
Prior art keywords: keyboard; electric; electronic machines; depressible keys; depressible
Prior art date: 1975-10-29
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

GB4379976A

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.)

Individual

Original Assignee

Individual

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.)

1975-10-29

Filing date

1976-10-21

Publication date

1979-09-12

1976-10-21 Application filed by Individual filed Critical Individual

1979-09-12 Publication of GB1552444A publication Critical patent/GB1552444A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
- H01H5/02—Energy stored by the attraction or repulsion of magnetic parts
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2221/00—Actuators
- H01H2221/036—Return force
- H01H2221/04—Return force magnetic
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2239/00—Miscellaneous
- H01H2239/024—Miscellaneous with inductive switch

GB4379976A 1975-10-29 1976-10-21 Keyboard with depressible keys for electric or electronic machines Expired GB1552444A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR7533085A FR2356199A1 (en)	1975-10-29	1975-10-29	ALPHANUMERIC KEYPAD WITH PRESSURE KEYS FOR ELECTRICAL OR ELECTRONIC MACHINE

Publications (1)

Publication Number	Publication Date
GB1552444A true GB1552444A (en)	1979-09-12

Family

ID=9161796

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB4379976A Expired GB1552444A (en)	1975-10-29	1976-10-21	Keyboard with depressible keys for electric or electronic machines

Country Status (8)

Country	Link
JP (1)	JPS5254980A (en)
BE (1)	BE847721A (en)
DE (1)	DE2647922C2 (en)
FR (1)	FR2356199A1 (en)
GB (1)	GB1552444A (en)
IT (1)	IT1068799B (en)
NL (1)	NL179692C (en)
SE (1)	SE419585B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2172441A (en) *	1985-03-06	1986-09-17	Sharp Kk	Printed wiring board with key contacts
GB2217517A (en) *	1987-11-23	1989-10-25	Liou Maw Lin	Computer keyboard
GB2311897A (en) *	1996-04-01	1997-10-08	Motorola Inc	Keypad configuration
EP1166301A1 (en) *	1999-10-18	2002-01-02	Duraswitch Industries Inc.	Island switch

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2395546A2 (en) *	1977-06-22	1979-01-19	Serras Paulet Edouard	ALPHANUMERIC KEYPAD WITH PRESSURE KEYS FOR ELECTRICAL OR ELECTRONIC MACHINE
FR2392548A2 (en) *	1977-05-25	1978-12-22	Serras Paulet Edouard	PUSH-BUTTON DEVICE FOR SWITCHING AN ELECTRONIC OR ELECTRIC CIRCUIT
JPS5914985Y2 (en) *	1978-02-28	1984-05-02	シャープ株式会社	key input device
FR2443130A1 (en) *	1978-11-29	1980-06-27	Serras Paulet Edouard	CONTROL KEYBOARD FOR ELECTRIC OR ELECTRONIC DEVICES
DE2953379A1 (en) *	1978-11-29	1980-12-11	Serras Paulet Edouard	CONTROL KEYBOARD FOR ELECTRIC OR ELECTRONIC DEVICES
FR2484130A1 (en) *	1980-06-06	1981-12-11	Serras Paulet Edouard	DEVICE WITH A FASTENABLE TOUCH FORMING A DELAYED OPEN SWITCH
FR2515472A1 (en) *	1981-10-27	1983-04-29	Thomson Csf Mat Tel	Magnetoresistive switch mechanism for telephone matrix key pads - has magnetically governed keys which alter conductivity of two adjacent conducting tracks at cross-point
DE3408599A1 (en) *	1984-03-09	1985-09-19	MIT Wilde Membran Impuls Technik GmbH, 5828 Ennepetal	Component for switching technology
FR2656736A1 (en) *	1990-01-04	1991-07-05	Gen Electric Cgr	Proximity console for equipment with multiple functionalities
FR2824899B1 (en)	2001-05-17	2003-10-03	Giat Ind Sa	CONTAINER FOR PROPULSIVE CHARGING MODULES

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3916360A (en) *	1974-08-09	1975-10-28	Singer Co	Magnetic keyboard

1975
- 1975-10-29 FR FR7533085A patent/FR2356199A1/en active Granted
1976
- 1976-10-21 GB GB4379976A patent/GB1552444A/en not_active Expired
- 1976-10-22 DE DE19762647922 patent/DE2647922C2/en not_active Expired
- 1976-10-26 IT IT2866876A patent/IT1068799B/en active
- 1976-10-27 SE SE7611934A patent/SE419585B/en not_active IP Right Cessation
- 1976-10-28 BE BE171855A patent/BE847721A/en not_active IP Right Cessation
- 1976-10-29 JP JP51129582A patent/JPS5254980A/en active Pending
- 1976-10-29 NL NL7612000A patent/NL179692C/en not_active IP Right Cessation

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2172441A (en) *	1985-03-06	1986-09-17	Sharp Kk	Printed wiring board with key contacts
GB2172441B (en) *	1985-03-06	1989-06-21	Sharp Kk	Method of mounting electronic parts onto single-sided printed wiring board
US4841633A (en) *	1985-03-06	1989-06-27	Sharp Kabushiki Kaisha	Method of mounting electronic parts onto single-sided printed wiring board
GB2217517A (en) *	1987-11-23	1989-10-25	Liou Maw Lin	Computer keyboard
GB2311897A (en) *	1996-04-01	1997-10-08	Motorola Inc	Keypad configuration
US5729221A (en) *	1996-04-01	1998-03-17	Motorola, Inc.	Keypad configuration
GB2311897B (en) *	1996-04-01	2000-08-16	Motorola Inc	Keypad configuration
EP1166301A1 (en) *	1999-10-18	2002-01-02	Duraswitch Industries Inc.	Island switch
EP1166301A4 (en) *	1999-10-18	2004-03-24	Duraswitch Ind Inc	Island switch

Also Published As

Publication number	Publication date
JPS5254980A (en)	1977-05-04
DE2647922A1 (en)	1977-05-12
SE7611934L (en)	1977-04-30
NL7612000A (en)	1977-05-03
FR2356199B1 (en)	1978-12-29
BE847721A (en)	1977-04-28
FR2356199A1 (en)	1978-01-20
IT1068799B (en)	1985-03-21
DE2647922C2 (en)	1983-08-18
SE419585B (en)	1981-08-10
NL179692B (en)	1986-05-16
NL179692C (en)	1986-10-16

Publication	Publication Date	Title
AU500763B2 (en)	1979-05-31	Keyboard encoding circuit
JPS5253629A (en)	1977-04-30	Keyboard device
JPS5222428A (en)	1977-02-19	Keyboard
JPS5275228A (en)	1977-06-24	Auxiliary keyboard device
JPS534527A (en)	1978-01-17	Key assigner
GB1552444A (en)	1979-09-12	Keyboard with depressible keys for electric or electronic machines
FR2304161A1 (en)	1976-10-08	ELECTRICAL SWITCH, ESPECIALLY FOR ELECTRONIC CALCULATOR KEYS
GB1540034A (en)	1979-02-07	Electronic touch switch
JPS5246721A (en)	1977-04-13	Keyboard device
GB2001585B (en)	1982-01-27	Alpha-numeric control keyboard with depressible keys for electric or electronic machines
JPS52130622A (en)	1977-11-02	Key assigner
JPS5265620A (en)	1977-05-31	Keyboard encoder
JPS52387A (en)	1977-01-05	Keyboard
GB2010556B (en)	1982-01-20	Keyboard circuit arrangement
JPS51132478A (en)	1976-11-17	Touch board
JPS51131314A (en)	1976-11-15	Double touch key for instrument
GB1539448A (en)	1979-01-31	Electronic calculator lock
DE2861435D1 (en)	1982-02-04	Depressible contactless key for generating electric signals in an electronic keyboard
JPS522517A (en)	1977-01-10	Single key chord forming unit for electronic keyboard instrument
JPS5265621A (en)	1977-05-31	Keyboard encoder
JPS52122879A (en)	1977-10-15	Keyboard key
GB1543153A (en)	1979-03-28	Electronic switches
JPS5241882A (en)	1977-03-31	Key switch
JPS5281574A (en)	1977-07-08	Key switch
JPS5239187A (en)	1977-03-26	Key switch

Legal Events

Date	Code	Title	Description
1979-11-28	PS	Patent sealed
1994-06-15	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 19931021