Patent US4115994A successfully refreshed from Google Patents.
US4115994A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dial illumination means
Assignee: Individual
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Filing: 1976-07-13
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Granted: 1978-09-26
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Expires: 1996-07-13
Abstract
Abstract A watch is disclosed having a face with visual hour indicators illuminated by a light emitting diode embedded in a transparent crystal for emitting light to flow outwardly through the crystal to engage a surrounding reflector surface which concentrates the light in the area of the visual hour indicators.
Inventors
- 👤 James N. Tomlinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:27
CPC Classifications
G; G04; G04B; G04B19/00; G04B19/30; G04B39/00
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
135 words
In a watch having a face with visual hour indicators, the improvement comprising a transparent crystal member having an inner face and an outer face positioned over the watch face and having a peripheral edge, light source means positioned internally of said crystal member, a source of electrical voltage selectively connectable to said light source means for actuation of said light source means, reflector means positioned radially outwardly of the peripheral edge of said crystal member for receiving light rays directly from the peripheral edge of said crystal member which have been cirected internally of said crystal from said light source means and for reflecting and concentrating substantially all of said light rays emitted from the peripheral edge of the crystal member in the area of said dial in which said visual indicators are located.
Claim 2
Dependent Claim
135 words
In a watch having a face with visual hour indicators, the improvement comprising a transparent crystal member having an inner face and an outer face positioned over the watch face and having a peripheral edge, light source means positioned internally of said crystal member, a source of electrical voltage selectively connectable to said light source means for actuation of said light source means, reflector means positioned radially outwardly of the peripheral edge of said crystal member for receiving light rays directly from the peripheral edge of said crystal member which have been cirected internally of said crystal from said light source means and for reflecting and concentrating substantially all of said light rays emitted from the peripheral edge of the crystal member in the area of said dial in which said visual indicators are located.
Claim 3
Dependent Claim
56 words
The invention of claim 1 additionally including light-impervious glare shield means supported by said crystal member outwardly of said light source means for shielding said light source means from the vision of a user of the watch as viewed when the user is looking at the watch face such as when ascertaining the time designated thereby.
Claim 4
Dependent Claim
93 words
The invention of claim 1 additionally including light-impervious glare shield means supported by said crystal outwardly of said light source means for shielding said light source means from the vision of a user of the watch as viewed when the user is looking at the watch face to ascertain the time designated thereby and said reflector means includes a cylindrical reflector surface positioned from the edge surface of said crystal and extending from a position adjacent the face of said watch to a position in alignment with the outer face of said crystal.
Claim 5
Dependent Claim
39 words
The invention of claim 3 additionally including an annular shaped reflective surface extending between the cylindrical reflector surface and the outer edge surface of said crystal oriented in a plane substantially parallel to the plane of said watch face.
Claim 6
Dependent Claim
15 words
The invention of claim 1 wherein said light source means is a light emitting diode.
Claim 7
Dependent Claim
56 words
The invention of claim 5 additionally including light-impervious glare shield means supported by said crystal member outwardly of said light source means for shielding said light source means from the vision of a user of the watch as viewed when the user is looking at the watch face such as when ascertaining the time designated thereby.
Claim 8
Dependent Claim
91 words
The invention of claim 5 additionally including light-impervious glare shield means supported by said crystal outwardly of said light source means for shielding said light source means from the vision of a user of the watch as viewed when the user is looking at the watch face to ascertain the time designated thereby and said reflector means includes a cylindrical reflector surface positioned from the cylindrical edge surface of said crystal and extending between the face of said watch and a position in alignment with the outer face of said crystal.
Claim 9
Dependent Claim
40 words
The invention of claim 7 additionally including an annular shaped reflective surface extending between the cylindrical reflective surface and the cylindrical outer edge surface of said crystal oriented in a plane substantially parallel to the plane of said watch face.
Claim 10
Dependent Claim
61 words
The invention of claim 1 wherein said light source means comprises a light emitting diode, said crystal member comprises a relatively thick central cylindrical portion in which said LED is coaxially positioned and an outer annular portion of substantially less thickness having an outer face and an inner face, said inner face of said annular portion comprising a partially reflective surface.
Claim 11
Dependent Claim
30 words
The invention of claim 9 additionally including a light-impervious shield positioned outwardly of said light emitting diode for shielding said LED from the eyes of a viewer of said watch.
Claim 12
Dependent Claim
41 words
The invention of claim 10 wherein said reflector means comprises a cylindrical reflector surface positioned coaxially with respect to said central cylindrical portion outwardly of said annular portion and extending from said watch face to a position adjacent said annular portion.
Claim 13
Dependent Claim
127 words
In a dial-type meter or the like having a dial with visual indicators, the improvement comprising a transparent cover member positioned over the dial and having a peripheral edge portion, a light emitting diode positioned internally of said transparent cover member, a source of electrical voltage selectively connectable to said light emitting diode for actuation of said light emitting diode, reflector means positioned radially outwardly of the peripheral edge portion of said transparent cover member for receiving light rays from said transparent cover member directed internally of said cover member from said light emitting diode for reflecting and concentrating substantially all of said light rays emitted from the peripheral edge of said cover member in the area of said dial in which said visual indicators are located.
Claim 14
Dependent Claim
127 words
In a dial-type meter or the like having a dial with visual indicators, the improvement comprising a transparent cover member positioned over the dial and having a peripheral edge portion, a light emitting diode positioned internally of said transparent cover member, a source of electrical voltage selectively connectable to said light emitting diode for actuation of said light emitting diode, reflector means positioned radially outwardly of the peripheral edge portion of said transparent cover member for receiving light rays from said transparent cover member directed internally of said cover member from said light emitting diode for reflecting and concentrating substantially all of said light rays emitted from the peripheral edge of said cover member in the area of said dial in which said visual indicators are located.
Claim 15
Dependent Claim
42 words
The invention of claim 12 additionally including a light-impervious shield positioned on said transparent cover member outwardly of said LED for shielding said light emitting diode from the vision of a user of the meter or the like looking at the dial.
Claim 16
Dependent Claim
84 words
The invention of claim 12 wherein said transparent cover member is a unitary plastic member including a relatively thick central cylindrical portion having a cylindrical edge surface with an axis perpendicular to said dial, said light emitting diode being coaxially positioned in said central cylindrical portion, said transparent cover member further including an annular portion of substantially less thickness than said central cylindrical portion having an outer face and an inner face, said inner face of said annular portion comprising a partially reflective surface.
Claim 17
Dependent Claim
40 words
The invention of claim 14 wherein said reflector means comprises a cylindrical reflector surface positioned coaxially with respect to said central cylindrical portion outwardly of said annular portion and extending from said dial to a position adjacent said annular portion.
Claim 18
Dependent Claim
37 words
The invention of claim 15 wherein light rays from said light emitting diode passing through said cylindrical edge surface strike said cylindrical reflector surface and are deflected to and concentrated at a desired area of said dial.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |