Patent US5234744A successfully refreshed from Google Patents.
US5234744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminated button key
Assignee: Sunarrow Co Ltd
•
Filing: 1992-07-17
•
Granted: 1993-08-10
•
Expires: 2012-07-17
Abstract
Abstract An illuminated key button is disclosed which is formed of a light permeable hard resin and has on the bottom of the key a print layer which is illuminated from below and is integral with the operating portion of the key button.
Inventors
- 👤 Yoshio Kenmochi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:02
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/22; B; B41; B41J; B41J5/00; B41J5/08; B41J5/12; H01; H01H; H01H13/00; H01H13/70; H01H13/702; H01H13/705; H03; H03K; H03K17/00; H03K17/94; H03K17/941; H03K17/96; H03K17/965; H03K17/968; H01H2219/00; H01H2219/028; H01H2219/034; H01H2219/036; H01H2221/00; H01H2221/002; H01H2221/006; H01H2221/07; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24851; Y10T428/24868; Y10T428/24876; Y10T428/24893
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
135 words
An illuminated button key characterized in that a key top formed of a light permeable hard resin is formed on the bottom of said key top with a stripping character print layer said stripping character print layer being formed on the bottom of said key top with a chromatic color light permeable print layer, said chromatic color light permeable print layer being adhered to the upper surface of an operating portion of said button key which is formed of alight permeable flexible rubber or a flexible resin by a light permeable adhesive, said operating portion being formed of said light permeable material integral with a non-operating portion, and non-light permeable coating layers which are formed on the remaining operating portion except for the upper surface of the operating portion and surfaces of the non-operating portion.
Claim 2
Dependent Claim
135 words
An illuminated button key characterized in that a key top formed of a light permeable hard resin is formed on the bottom of said key top with a stripping character print layer said stripping character print layer being formed on the bottom of said key top with a chromatic color light permeable print layer, said chromatic color light permeable print layer being adhered to the upper surface of an operating portion of said button key which is formed of alight permeable flexible rubber or a flexible resin by a light permeable adhesive, said operating portion being formed of said light permeable material integral with a non-operating portion, and non-light permeable coating layers which are formed on the remaining operating portion except for the upper surface of the operating portion and surfaces of the non-operating portion.
Claim 3
Dependent Claim
65 words
The illuminated button key according to claim 1, wherein a skirt portion constitutes a part of the operating portion adjacent to the non-operating portion and having an annular holding portion adjacent to the upper portion of said skirt portion which is formed of a non-light permeable flexible rubber or a flexible resin, said annular holding portion being internally formed of a light permeable movable block.
Claim 4
Dependent Claim
97 words
The illuminated button key according to claim 1, wherein a skirt portion constitutes a part of the operating portion adjacent to the non-operating portion and having an annular holding portion adjacent to the upper portion of said skirt portion which are formed of a non-light permeable flexible rubber or a flexible resin, said annular holding portion being a light permeable movable block, and having a light diffusion space portion which is encircled by the bottom of the key top and an inner peripheral surface on said annular holding portion and the upper surface of the movable block.
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) | 1996-08-09 | 1997-02-08 | 1997-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-09 | 2001-02-08 | 2001-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-09 | 2005-02-08 | 2005-08-10 | $7700.00 | Window Closed / Lapsed |