GB1543121A – Electric switch keyboard
– Google Patents
GB1543121A – Electric switch keyboard
– Google Patents
Electric switch keyboard
Info
Publication number
GB1543121A
GB1543121A
GB2112877A
GB2112877A
GB1543121A
GB 1543121 A
GB1543121 A
GB 1543121A
GB 2112877 A
GB2112877 A
GB 2112877A
GB 2112877 A
GB2112877 A
GB 2112877A
GB 1543121 A
GB1543121 A
GB 1543121A
Authority
GB
United Kingdom
Prior art keywords
electric switch
switch keyboard
keyboard
electric
switch
Prior art date
1976-05-20
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
GB2112877A
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.)
Suwa Seikosha KK
Original Assignee
Suwa Seikosha KK
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.)
1976-05-20
Filing date
1977-05-19
Publication date
1979-03-28
1976-05-20
Priority claimed from JP1976064231U
external-priority
patent/JPS5817269Y2/en
1976-06-17
Priority claimed from JP7160876A
external-priority
patent/JPS52153775A/en
1977-05-19
Application filed by Suwa Seikosha KK
filed
Critical
Suwa Seikosha KK
1979-03-28
Publication of GB1543121A
publication
Critical
patent/GB1543121A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
G—PHYSICS
G04—HOROLOGY
G04G—ELECTRONIC TIME-PIECES
G04G9/00—Visual time or date indication means
G04G9/0064—Visual time or date indication means in which functions not related to time can be displayed
G04G9/007—Visual time or date indication means in which functions not related to time can be displayed combined with a calculator or computing means
G—PHYSICS
G04—HOROLOGY
G04G—ELECTRONIC TIME-PIECES
G04G17/00—Structural details; Housings
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
H01H13/702—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
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
H01H13/702—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
H01H13/703—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by spacers between contact carrying layers
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
H01H2209/00—Layers
H01H2209/068—Properties of the membrane
H01H2209/078—Conductive rubber
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
H01H2211/00—Spacers
H01H2211/026—Spacers without separate element
H01H2211/028—Contacts in depressions of layers
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
H01H2217/00—Facilitation of operation; Human engineering
H01H2217/026—Pencil operated
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
H01H2219/00—Legends
H01H2219/002—Legends replaceable; adaptable
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
H01H2223/00—Casings
H01H2223/002—Casings sealed
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
H01H2231/00—Applications
H01H2231/002—Calculator, computer
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
H01H2231/00—Applications
H01H2231/028—Watch
GB2112877A
1976-05-20
1977-05-19
Electric switch keyboard
Expired
GB1543121A
(en)
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
JP1976064231U
JPS5817269Y2
(en)
1976-05-20
1976-05-20
Exterior structure of electronic clock with calculator
JP7160876A
JPS52153775A
(en)
1976-06-17
1976-06-17
Outside provision of electronic watches with calculator
Publications (1)
Publication Number
Publication Date
GB1543121A
true
GB1543121A
(en)
1979-03-28
Family
ID=26405351
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB2112877A
Expired
GB1543121A
(en)
1976-05-20
1977-05-19
Electric switch keyboard
Country Status (3)
Country
Link
GB
(1)
GB1543121A
(en)
HK
(1)
HK8781A
(en)
MY
(1)
MY8100341A
(en)
Cited By (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP1001443A1
(en)
*
1998-11-12
2000-05-17
Matsushita Electric Industrial Co., Ltd
Portable terminal device
1977
1977-05-19
GB
GB2112877A
patent/GB1543121A/en
not_active
Expired
1981
1981-03-12
HK
HK8781A
patent/HK8781A/en
unknown
1981-12-30
MY
MY8100341A
patent/MY8100341A/en
unknown
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP1001443A1
(en)
*
1998-11-12
2000-05-17
Matsushita Electric Industrial Co., Ltd
Portable terminal device
US6512827B1
(en)
1998-11-12
2003-01-28
Matsushita Electric Industrial Co., Ltd.
Portable terminal device
Also Published As
Publication number
Publication date
MY8100341A
(en)
1981-12-31
HK8781A
(en)
1981-03-20
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Legal Events
Date
Code
Title
Description
1979-06-13
PS
Patent sealed
1994-01-19
PCNP
Patent ceased through non-payment of renewal fee
Effective date:
19930519
