Patent US5120920A successfully refreshed from Google Patents.
US5120920A
Expired / Lapsed
US
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Key top
Assignee: Alps Alpine Co Ltd
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Filing: 1989-07-06
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Granted: 1992-06-09
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Expires: 2009-07-06
Abstract
Abstract A key top includes an indicator member formed of a transparent or translucent synthetic resin and having a projection corresponding to a contour of an indicating portion, an outer member formed of an opaque synthetic resin and molded to cover an outer surface of the indicator member except a top surface of the projection, a light transmitting colored coating printed on the top surface of the projection, and a light shielding coating printed on a part of the light transmitting colored coating which corresponds to a closed portion of the indicating portion such as the center of the letter "O".
Inventors
- 👤 Tatsuya Moriike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:54
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/18; H01H9/182; H01H2009/183; H01H2009/187; H01H2219/00; H01H2219/028; H01H2229/00; H01H2229/044; H01H2229/046
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A key top including an area to be illuminated, said key top comprising: an indicator member formed of a light transmitting synthetic resin and having an outer surface; an indicating portion formed as a projection of said indicator member and having a top surface, wherein an outer contour of said projection corresponds to an outer periphery of said area to be illuminated; an outer member formed of an opaque synthetic resin and molded to cover a portion of the outer surface of said indicator member, wherein said outer member does not cover the top surface of said indicating portion; a light transmitting colored coating applied to said top surface of said indicating portion; and a light shielding coating applied to a portion of said light transmitting colored coating, said portion of said light transmitting colored coating corresponding to a closed non-illuminated portion having a circumferential boundary that is surrounded by said area to be illuminated.
Claim 2
Dependent Claim
155 words
A key top including an area to be illuminated, said key top comprising: an indicator member formed of a light transmitting synthetic resin and having an outer surface; an indicating portion formed as a projection of said indicator member and having a top surface, wherein an outer contour of said projection corresponds to an outer periphery of said area to be illuminated; an outer member formed of an opaque synthetic resin and molded to cover a portion of the outer surface of said indicator member, wherein said outer member does not cover the top surface of said indicating portion; a light transmitting colored coating applied to said top surface of said indicating portion; and a light shielding coating applied to a portion of said light transmitting colored coating, said portion of said light transmitting colored coating corresponding to a closed non-illuminated portion having a circumferential boundary that is surrounded by said area to be illuminated.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-09 | 1995-12-09 | 1996-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-09 | 1999-12-09 | 2000-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-09 | 2003-12-09 | 2004-06-09 | $7700.00 | Window Closed / Lapsed |