CA1143034A - Low profile keyboard actuator - Google Patents
Low profile keyboard actuatorInfo
- Publication number
- CA1143034A CA1143034A CA000311624A CA311624A CA1143034A CA 1143034 A CA1143034 A CA 1143034A CA 000311624 A CA000311624 A CA 000311624A CA 311624 A CA311624 A CA 311624A CA 1143034 A CA1143034 A CA 1143034A
- Authority
- CA
- Canada
- Prior art keywords
- actuator
- arm
- key
- levers
- typewriter
- 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
Links
- 125000006850 spacer group Chemical group 0.000 claims description 20
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000000994 depressogenic effect Effects 0.000 abstract description 2
- 230000000875 corresponding effect Effects 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 5
- 230000000881 depressing effect Effects 0.000 description 5
- 230000002401 inhibitory effect Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 230000003252 repetitive effect Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 101100256746 Mus musculus Setdb1 gene Proteins 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229940000425 combination drug Drugs 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- YDTFRJLNMPSCFM-YDALLXLXSA-M levothyroxine sodium anhydrous Chemical compound [Na+].IC1=CC(C[C@H](N)C([O-])=O)=CC(I)=C1OC1=CC(I)=C(O)C(I)=C1 YDTFRJLNMPSCFM-YDALLXLXSA-M 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229940102098 revolution Drugs 0.000 description 1
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
- B41J23/00—Power drives for actions or mechanisms
- B41J23/32—Electromagnetic power drives, e.g. applied to key levers
- B41J23/34—Electromagnetic power drives, e.g. applied to key levers applied to elements other than key levers
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Input From Keyboards Or The Like (AREA)
- Accessory Devices And Overall Control Thereof (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US85581877A | 1977-11-30 | 1977-11-30 | |
| US855,818 | 1977-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1143034A true CA1143034A (en) | 1983-03-15 |
Family
ID=25322142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000311624A Expired CA1143034A (en) | 1977-11-30 | 1978-09-19 | Low profile keyboard actuator |
Country Status (6)
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US26954A (en) * | 1860-01-24 | James w | ||
| DE249043C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | ||||
| US1904784A (en) * | 1933-04-18 | Electbic automatic becobding scale | ||
| US2346819A (en) * | 1941-08-07 | 1944-04-18 | Arthur H Buckley | Automatic control mechanism for motorized typewriters |
| GB576600A (en) * | 1944-02-03 | 1946-04-11 | Creed & Co Ltd | Improvements in or relating to apparatus for mechanically operating keyboards of typewriters and the like |
| DE912578C (de) * | 1951-02-25 | 1954-05-31 | Eldi Feinmechanik G M B H | Antrieb fuer Waehlschienensysteme an elektrischen Schreib-, Buchungs- und Rechenmaschinen |
| US3413624A (en) * | 1964-02-10 | 1968-11-26 | Chad W Pennebaker | Automatic magnetic recording and playback control system for a keyboard actuated business machine |
| US3324985A (en) * | 1966-01-14 | 1967-06-13 | Ibm | Encoder |
| US3452851A (en) * | 1966-10-19 | 1969-07-01 | Lawrence Holmes Jr | Typewriter baseplate enabling machine operation by and generation of electrical signal |
| DE2034231C3 (de) * | 1970-07-10 | 1974-05-30 | Olympia Werke Ag, 2940 Wilhelmshaven | Kraftangetriebenes Druckwerk für Schreib- und ähnliche Büromaschinen |
| GB1289445A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1971-03-24 | 1972-09-20 | ||
| GB1394250A (en) * | 1971-07-20 | 1975-05-14 | Olivetti & Co Spa | Coded input and output apparatus in a typewriter |
| GB1400209A (en) * | 1971-09-06 | 1975-07-16 | Olivetti & Co Spa | Electric keyboards for office machines |
| DE2325743A1 (de) * | 1973-05-21 | 1974-12-19 | Standard Elektrik Lorenz Ag | Vorrichtung zur automatischen tastenbetaetigung von schreibmaschinen |
| DE2336114C3 (de) * | 1973-07-16 | 1979-01-04 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Biogalvanische Metall-Sauerstoff-Zelle |
| US4050566A (en) * | 1975-11-18 | 1977-09-27 | Hamilton Communications, Inc. | Mechanical code converter for use with a typewriter or the like |
-
1978
- 1978-09-13 GB GB7836600A patent/GB2009046B/en not_active Expired
- 1978-09-19 CA CA000311624A patent/CA1143034A/en not_active Expired
- 1978-10-06 IT IT28545/78A patent/IT1100848B/it active
- 1978-10-21 JP JP12907478A patent/JPS5479716A/ja active Granted
- 1978-11-17 DE DE19782849847 patent/DE2849847A1/de active Granted
- 1978-11-28 FR FR7833578A patent/FR2410563B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2009046A (en) | 1979-06-13 |
| DE2849847A1 (de) | 1979-05-31 |
| GB2009046B (en) | 1982-02-10 |
| IT7828545A0 (it) | 1978-10-06 |
| DE2849847C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1989-05-03 |
| FR2410563A1 (fr) | 1979-06-29 |
| IT1100848B (it) | 1985-09-28 |
| JPS6161989B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1986-12-27 |
| JPS5479716A (en) | 1979-06-26 |
| FR2410563B1 (fr) | 1986-03-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3413624A (en) | Automatic magnetic recording and playback control system for a keyboard actuated business machine | |
| GB1579898A (en) | Keyboard actuatable with the aid of fingers of at least one hand and actuating unit therefor | |
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| US4273456A (en) | Paper insertion apparatus for a typewriter | |
| CA1143034A (en) | Low profile keyboard actuator | |
| JPS6113992B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
| US2581665A (en) | Electromagnetic operating mechanism for typewriters | |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |