IT210475Z2 - Tastiera a contatti per macchine scriventi - Google Patents
Tastiera a contatti per macchine scriventiInfo
- Publication number
- IT210475Z2 IT210475Z2 IT5306987U IT5306987U IT210475Z2 IT 210475 Z2 IT210475 Z2 IT 210475Z2 IT 5306987 U IT5306987 U IT 5306987U IT 5306987 U IT5306987 U IT 5306987U IT 210475 Z2 IT210475 Z2 IT 210475Z2
- Authority
- IT
- Italy
- Prior art keywords
- writing machines
- contact keyboard
- keyboard
- contact
- writing
- Prior art date
Links
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
- H01H2215/00—Tactile feedback
- H01H2215/004—Collapsible dome or bubble
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2227/00—Dimensions; Characteristics
- H01H2227/022—Collapsable dome
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT5306987U IT210475Z2 (it) | 1987-02-26 | 1987-02-26 | Tastiera a contatti per macchine scriventi |
EP88301485A EP0280491A3 (en) | 1987-02-26 | 1988-02-22 | Contact-type keyboard for typewriters |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT5306987U IT210475Z2 (it) | 1987-02-26 | 1987-02-26 | Tastiera a contatti per macchine scriventi |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8753069V0 IT8753069V0 (it) | 1987-02-26 |
IT210475Z2 true IT210475Z2 (it) | 1988-12-30 |
Family
ID=11279708
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT5306987U IT210475Z2 (it) | 1987-02-26 | 1987-02-26 | Tastiera a contatti per macchine scriventi |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0280491A3 (it) |
IT (1) | IT210475Z2 (it) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3809770A1 (de) * | 1988-03-23 | 1989-10-05 | Preh Elektro Feinmechanik | Tastschalter |
US6046420A (en) * | 1998-12-17 | 2000-04-04 | Electronics For Imaging, Inc. | Silicon switch |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7606008U1 (de) * | 1976-02-28 | 1976-08-26 | Preh, Elektrofeinmechanische Werke Jakob Preh Nachf., 8740 Bad Neustadt | Drucktastenschalter |
DE3227457A1 (de) * | 1982-07-22 | 1984-01-26 | Siemens AG, 1000 Berlin und 8000 München | Tastenaggregat |
US4518833A (en) * | 1983-07-18 | 1985-05-21 | Gates Data Products, Inc. | Conductive elastomeric ink composition |
US4604509A (en) * | 1985-02-01 | 1986-08-05 | Honeywell Inc. | Elastomeric push button return element for providing enhanced tactile feedback |
-
1987
- 1987-02-26 IT IT5306987U patent/IT210475Z2/it active
-
1988
- 1988-02-22 EP EP88301485A patent/EP0280491A3/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
EP0280491A3 (en) | 1990-01-10 |
EP0280491A2 (en) | 1988-08-31 |
IT8753069V0 (it) | 1987-02-26 |
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