IT1167028B - ELECTRIC MEMBRANE KEYBOARD WITH BUFFER LAYER ON AT LEAST ONE SWITCHING SHEET OR CIRCUIT LAYER - Google Patents
ELECTRIC MEMBRANE KEYBOARD WITH BUFFER LAYER ON AT LEAST ONE SWITCHING SHEET OR CIRCUIT LAYERInfo
- Publication number
- IT1167028B IT1167028B IT23924/83A IT2392483A IT1167028B IT 1167028 B IT1167028 B IT 1167028B IT 23924/83 A IT23924/83 A IT 23924/83A IT 2392483 A IT2392483 A IT 2392483A IT 1167028 B IT1167028 B IT 1167028B
- Authority
- IT
- Italy
- Prior art keywords
- membrane keyboard
- layer
- switching sheet
- buffer layer
- electric membrane
- Prior art date
Links
- 239000012528 membrane Substances 0.000 title 1
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
- 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
- H01H2209/00—Layers
- H01H2209/014—Layers composed of different layers; Lubricant in between
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2209/00—Layers
- H01H2209/068—Properties of the membrane
- H01H2209/08—Properties of the membrane with memory properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2215/00—Tactile feedback
- H01H2215/004—Collapsible dome or bubble
- H01H2215/008—Part of substrate or membrane
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2217/00—Facilitation of operation; Human engineering
- H01H2217/016—Pressure reduction membrane; Spreader layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2227/00—Dimensions; Characteristics
- H01H2227/002—Layer thickness
- H01H2227/004—Membrane
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2229/00—Manufacturing
- H01H2229/024—Packing between substrate and membrane
- H01H2229/028—Adhesive
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP57211125A JPS59101724A (en) | 1982-11-30 | 1982-11-30 | Keyboard switch |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8323924A0 IT8323924A0 (en) | 1983-11-28 |
IT1167028B true IT1167028B (en) | 1987-05-06 |
Family
ID=16600801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT23924/83A IT1167028B (en) | 1982-11-30 | 1983-11-28 | ELECTRIC MEMBRANE KEYBOARD WITH BUFFER LAYER ON AT LEAST ONE SWITCHING SHEET OR CIRCUIT LAYER |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS59101724A (en) |
DE (1) | DE3343376A1 (en) |
FR (1) | FR2537378A1 (en) |
GB (1) | GB2133216A (en) |
IT (1) | IT1167028B (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61180431U (en) * | 1985-04-30 | 1986-11-11 | ||
EP1429355A1 (en) * | 2002-12-09 | 2004-06-16 | IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A. | Foil-type switching element |
EP1429357A1 (en) | 2002-12-09 | 2004-06-16 | IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A. | Foil-type switching element with multi-layered carrier foil |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3382338A (en) * | 1966-04-26 | 1968-05-07 | Ibm | Pushbutton actuator for elastomeric switch |
US3592979A (en) * | 1969-11-05 | 1971-07-13 | Ncr Co | Elastomeric keyboard with improved printed circuit contact means |
US3617660A (en) * | 1970-01-23 | 1971-11-02 | Ibm | Keyboard actuating mechanism for diaphragm electric switch contact array |
US3676616A (en) * | 1970-12-21 | 1972-07-11 | Ibm | Eds serial switch array |
US3777222A (en) * | 1972-05-12 | 1973-12-04 | Ibm | Modular touch sensitive indicating panels with touch and light transmissive overlay cover membrane containing visible printed indicia |
US3911233A (en) * | 1973-02-20 | 1975-10-07 | Matsushita Electric Ind Co Ltd | Keyboard switch for desk top electronic calculators |
US3860771A (en) * | 1973-10-29 | 1975-01-14 | Chomerics Inc | Keyboard switch assembly with dome shaped actuator having associated underlying contactor means |
US3969600A (en) * | 1975-06-11 | 1976-07-13 | Burroughs Corporation | Tactile feedback keyboard switch assembly and actuator |
US4158115A (en) * | 1978-06-26 | 1979-06-12 | W. H. Brady Co. | Internally connecting flexible switch |
US4520248A (en) * | 1980-08-15 | 1985-05-28 | Rogers Corporation | Keyboard assembly |
US4362911A (en) * | 1980-09-17 | 1982-12-07 | Ncr Corporation | Membrane keyboard switch assembly having selectable tactile properties |
-
1982
- 1982-11-30 JP JP57211125A patent/JPS59101724A/en active Pending
-
1983
- 1983-11-28 IT IT23924/83A patent/IT1167028B/en active
- 1983-11-29 FR FR8319013A patent/FR2537378A1/en not_active Withdrawn
- 1983-11-30 DE DE19833343376 patent/DE3343376A1/en not_active Withdrawn
- 1983-11-30 GB GB08332032A patent/GB2133216A/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
IT8323924A0 (en) | 1983-11-28 |
FR2537378A1 (en) | 1984-06-08 |
GB8332032D0 (en) | 1984-01-04 |
GB2133216A (en) | 1984-07-18 |
DE3343376A1 (en) | 1984-05-30 |
JPS59101724A (en) | 1984-06-12 |
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