US3755661A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminous switching key- or push-button
Assignee: SOC DE TELECOMMUNICATIONS ELECTRONIQUE AERONAUTIQUE MARITIME TEAM FR
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Filing: 1971-12-15
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Granted: 1973-08-28
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Expires: 1991-12-15
Abstract
Abstract A key- or push-button for controlling the switching on and off of at least one electrical circuit is provided with an elongated body extending through an aperture of a panel. The body and the panel are made essentially of transparent material covered with an opaque outer wall or coating, with the exception of the end of the body and of an annular root portion thereof registering with the aperture of the panel in one switching position, whereby the light produced by a bulb incorporated to said panel is selectively transmitted to the end of the button.
Inventors
- 👤 A Bouvrande
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:49
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/02; H01H13/023; Y; Y10; Y10S; Y10S200/00; Y10S200/47
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
209 words
A luminous push-button incorporated to a keyboard for actuating and signalling the state of an associated switch means having first and second states, said keyboard comprising a front panel provided with an aperture through which said push button extends and is reciprocally movable between first and second positions corresponding respectively to said first and second states of said switch means, said front panel including at least one outer, opaque layer and one inner, light-transmitting layer operatively illuminated by an associated light source concealed by said panel, said push-button comprising an elongated, transparent core having an outer end portion surrounded by an opaque tubular wall and a solid inner base portion having a pin longitudinally fitted therein and operatively connected to said switch means for actuation thereof, said base portion having an exposed, annular periphery positioned and dimensioned to register with said inner layer of said panel when said push-button is in a determined one of said first and second positions and to be out of alignment with said inner layer when said push-button is in the other one of said positions, an opaque, annular seal element being operatively mounted on said panel around said aperture for slidably engaging said opaque tubular wall of said push-button in either position thereof.
Claim 2
Dependent Claim
209 words
A luminous push-button incorporated to a keyboard for actuating and signalling the state of an associated switch means having first and second states, said keyboard comprising a front panel provided with an aperture through which said push button extends and is reciprocally movable between first and second positions corresponding respectively to said first and second states of said switch means, said front panel including at least one outer, opaque layer and one inner, light-transmitting layer operatively illuminated by an associated light source concealed by said panel, said push-button comprising an elongated, transparent core having an outer end portion surrounded by an opaque tubular wall and a solid inner base portion having a pin longitudinally fitted therein and operatively connected to said switch means for actuation thereof, said base portion having an exposed, annular periphery positioned and dimensioned to register with said inner layer of said panel when said push-button is in a determined one of said first and second positions and to be out of alignment with said inner layer when said push-button is in the other one of said positions, an opaque, annular seal element being operatively mounted on said panel around said aperture for slidably engaging said opaque tubular wall of said push-button in either position thereof.
Claim 3
Dependent Claim
41 words
A luminous push-button according to claim 1, wherein said opaque, tubular wall extends beyond the end surface of said outer end portion of said transparent core and is closed at its free end by an at least partially transparent end wall.
Claim 4
Dependent Claim
38 words
A luminous push-button according to claim 2, wherein said end surface of said outer end portion of said core is shaped, at least along its periphery, into a convex lens adapted to concentrate light onto said end wall.
Claim 5
Dependent Claim
43 words
A luminous push-button according to claim 1, wherein said pin is formed with a pointed conical end which is fitted in said base portion of said transparent core and the tip of which falls short of said outer end surface of said core.
Claim 6
Dependent Claim
26 words
A luminous push-button according to claim 4, wherein the end surface of said base portion of said core is concave and covered with a reflecting coating.
Claim 7
Dependent Claim
41 words
A luminous push-button according to claim 5, wherein said opaque, tubular wall extends beyond the end surface of said outer end portion of said transparent core and is closed at its free end by an at least partially transparent end wall.
Claim 8
Dependent Claim
38 words
A luminous push-button according to claim 6, wherein said end surface of said outer end portion of said core is shaped, at least along its periphery, into a convex lens adapted to concentrate light onto said end wall.
Claim 9
Dependent Claim
35 words
A luminous push-button according to claim 1, whereIn said panel comprises a transparent plate constituting said inner layer, the apparent outer face of which is provided with an opaque, reflecting coating constituting said outer layer.
Claim 10
Dependent Claim
31 words
A luminous push-button according to claim 8, wherein said transparent plate is formed with at least one internal recess containing at least one permanently illuminated miniature lamp constituting said light source.
Claim 11
Dependent Claim
32 words
A luminous push-button according to claim 9, wherein said panel comprises a printed circuit board underlying the inner face of said transparent plate and arranged for feeding electrical energy to said lamp.
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |