US5237607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lighted telephone dial
Assignee: Nokia Bell Labs
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Filing: 1992-01-03
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Granted: 1993-08-17
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Expires: 2012-01-03
Abstract
Abstract A dial illuminating assembly allows for minimum power operation while maintaining uniformity of illumination in a telephone dial. The dial illumination assembly includes a plurality of fiber optic light guides for receiving light rays emanating from a light source and for directing these light rays to a plurality of translucent buttons. Illumination of the translucent buttons is achieved by creating multiple abraded surfaces on the light guides for dispersing the light rays in the vicinity of each translucent button. The light guides are routed along opposed sides of the translucent buttons with abraded surfaces on the light guides being positioned next to each button for providing the desired illumination. The dial illuminating assembly directs light rays so efficiently that only one light source is needed to provide uniform illumination in standard telephone dials.
Inventors
- 👤 Perry W. Diamantis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:12
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/22
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
129 words
An assembly for illuminating a plurality of buttons on a telephone dial, the assembly comprising: light guide means for receiving light rays emanating from a light source and for directing said light rays from the light source to the plurality of buttons; and light dispersion means for dispersing the light rays in the vicinity of the plurality of buttons for illuminating said plurality of buttons, the light dispersion means comprising abraded sections on the light guide means, each abraded section on the light guide means being sized according to its location relative to the light source, the abraded section located the closest to the light source having the smallest abraded surface area and the abraded section located the furthest from the light source having the largest abraded surface area.
Claim 2
Dependent Claim
129 words
An assembly for illuminating a plurality of buttons on a telephone dial, the assembly comprising: light guide means for receiving light rays emanating from a light source and for directing said light rays from the light source to the plurality of buttons; and light dispersion means for dispersing the light rays in the vicinity of the plurality of buttons for illuminating said plurality of buttons, the light dispersion means comprising abraded sections on the light guide means, each abraded section on the light guide means being sized according to its location relative to the light source, the abraded section located the closest to the light source having the smallest abraded surface area and the abraded section located the furthest from the light source having the largest abraded surface area.
Claim 3
Dependent Claim
15 words
The assembly of claim 1 wherein the light guide means comprises a fiber optic strand.
Claim 4
Dependent Claim
21 words
The assembly of claim 2 wherein each abraded section comprises a roughened circumferential abraded surface area on the fiber optic strand.
Claim 5
Dependent Claim
14 words
The assembly of claim 1 wherein the light source is a light emitting diode.
Claim 6
Dependent Claim
20 words
The assembly of claim 4 further comprising a lens for focusing the light rays emanating from the light emitting diode.
Claim 7
Dependent Claim
64 words
The assembly of claim 1 wherein the light guide means comprises a plurality of fiber optic strands extending from the light source, each one of the plurality of buttons having one of said plurality of fiber optic strands disposed on opposite sides of said button and positioned in close proximity thereto for providing illumination for said button from an abraded section on each strand.
Claim 8
Dependent Claim
98 words
The assembly of claim 1 wherein the light guide means comprises a plurality of fiber optic strands extending from the light source, each one of the plurality of buttons having a first portion of one of said plurality of fiber optic strands disposed on a first side of said button in close proximity thereto and an extended second portion of the fiber optic strand disposed on a second side of said button in close proximity thereto, the first and second portion of the fiber optical strand providing illumination for said button from abraded sections located on said strand.
Claim 9
Dependent Claim
127 words
A telephone dial assembly comprising: a light source; a plurality of translucent buttons; light guide means for receiving light rays emanating from the light source and for directing said light rays from the light source to the plurality of translucent buttons; and light dispersion means for dispersing the light rays in the vicinity of the plurality of translucent buttons for illuminating said buttons, the light dispersion means comprising abraded sections on the light guide means, each abraded section on the light guide means being sized according to its location relative to the light source, the abraded section located the closest to the light source having the smallest abraded surface area and the abraded section located the furthest from the light source having the largest abraded surface area.
Claim 10
Dependent Claim
127 words
A telephone dial assembly comprising: a light source; a plurality of translucent buttons; light guide means for receiving light rays emanating from the light source and for directing said light rays from the light source to the plurality of translucent buttons; and light dispersion means for dispersing the light rays in the vicinity of the plurality of translucent buttons for illuminating said buttons, the light dispersion means comprising abraded sections on the light guide means, each abraded section on the light guide means being sized according to its location relative to the light source, the abraded section located the closest to the light source having the smallest abraded surface area and the abraded section located the furthest from the light source having the largest abraded surface area.
Claim 11
Dependent Claim
17 words
The telephone dial assembly of claim 8 wherein the light source is a single light emitting diode.
Claim 12
Dependent Claim
19 words
The telephone dial assembly of claim 8 wherein the light guide means comprises a plurality of fiber optic strands.
Claim 13
Dependent Claim
23 words
The telephone dial assembly of claim 10 wherein each abraded section comprises a roughened circumferential abraded surface area on the fiber optic strands.
Claim 14
Dependent Claim
63 words
The telephone dial assembly of claim 11 further comprising a pair of channels formed on opposite sides of an opening in a telephone housing, the opening providing a passageway for one of the plurality of translucent buttons and the pair of channels providing a positioning means for guiding fiber optic strands in close proximity to said one of the plurality of translucent buttons.
Claim 15
Dependent Claim
32 words
The telephone dial assembly of claim 12 wherein the abraded sections of the fiber optic strands are positioned in the pair of channels for illuminating said one of the plurality of buttons.
Claim 16
Dependent Claim
22 words
The telephone dial assembly of claim 13 wherein each one of the pair of channels is coated with a reflective type material.
Claim 17
Dependent Claim
141 words
An assembly for illuminating a plurality of buttons on a telephone dial, the assembly comprising: light guide means for receiving light rays emanating from a light source and for directing said light rays from the light source to the plurality of buttons, the light guide means comprising fiber optic strand loops, each of the strand loops having both ends connected to the light source; and light dispersion means for dispersing the light rays in the vicinity of the plurality of buttons, the light dispersion means comprising abraded sections on the light guide means for illuminating said plurality of buttons, each one of the plurality of buttons having the strand from a strand loop disposed on opposite sides of said button and positioned in close proximity thereto for providing the illumination for said button from the abraded sections on said strand loop.
Claim 18
Dependent Claim
141 words
An assembly for illuminating a plurality of buttons on a telephone dial, the assembly comprising: light guide means for receiving light rays emanating from a light source and for directing said light rays from the light source to the plurality of buttons, the light guide means comprising fiber optic strand loops, each of the strand loops having both ends connected to the light source; and light dispersion means for dispersing the light rays in the vicinity of the plurality of buttons, the light dispersion means comprising abraded sections on the light guide means for illuminating said plurality of buttons, each one of the plurality of buttons having the strand from a strand loop disposed on opposite sides of said button and positioned in close proximity thereto for providing the illumination for said button from the abraded sections on said strand loop.
Claim 19
Dependent Claim
24 words
The assembly of claim 15 wherein each of the abraded sections on the fiber optic strand loop has the same size abraded surface area.
References Cited (Backward Citations)
US4866764A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-08-16 | 1997-02-15 | 1997-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-16 | 2001-02-15 | 2001-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-16 | 2005-02-15 | 2005-08-17 | $7700.00 | Window Closed / Lapsed |