US4044708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transilluminated dial presentation
Assignee: McDonnell Douglas Corp
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Filing: 1975-07-23
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Granted: 1977-08-30
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Expires: 1995-07-23
Abstract
Abstract A dial display of transilluminated instruments includes a negative or color transparent film of the pointer and dial face of an instrument, in contact with a diffuser element such as a Mylar (polyester) film, the negative film and diffuser being laminated to a high light transmission element such as an acrylic material to provide a rigid concentric pointer drum and dial face assembly, and light emitting diodes and reflector means mounted for back lighting the transparent negative film. Light from the light emitting diodes (LED) is reflected between the reflector assembly and diffuser surface, and produces a uniformly lighted dial and pointer presentation. The color of the pointer and dial face indicia is formed directly by the color of the diffuser material at the exposed areas on the developed negative film. Various other modifications of the invention include use of a reverse silk screened diffuser instead of a negative film, in combination with the diffuser, e.g. a white diffuser, wherein the pointer and dial face displays are reverse silk screened directly on the diffuser, and wherein the white color of the diffuser material forms the display marks or indicia. Further, the diodes can be oriented toward the diffuser surface instead of toward the reflector surface, and different wavelength light emitting diodes can be used. Also there can be employed different colored diffusers or different wavelength filters between the negative and diffuser surfaces.
Inventors
- 👤 Herman C. Klein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:33
CPC Classifications
G; G01; G01D; G01D11/00; G01D11/28
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
177 words
An indicator dial system for instruments, which comprises a display of an instrument dial face in the form of a developed photographic film or a reverse silk screened presentation of said instrument dial face, a light diffuser element, said display of an instrument dial face being mounted on one side of said diffuser element, a high light transmission element mounted on the other side of said diffuser element and supporting same, a light source spaced from and positioned on the opposite side of said high light transmission element from said diffuser element, said light source comprising light emitting diode means, means supporting said light emitting diode means in spaced relation to said light transmission element, and reflector means at the rear of said light transmission element for backlighting said instrument dial face display, said reflector means being positioned to reflect light from said light emitting diode means through said light transmission element to said diffuser element, said diffuser element diffusing the light received from said high light transmission element for uniformly illuminating said instrument dial face display.
Claim 2
Dependent Claim
177 words
An indicator dial system for instruments, which comprises a display of an instrument dial face in the form of a developed photographic film or a reverse silk screened presentation of said instrument dial face, a light diffuser element, said display of an instrument dial face being mounted on one side of said diffuser element, a high light transmission element mounted on the other side of said diffuser element and supporting same, a light source spaced from and positioned on the opposite side of said high light transmission element from said diffuser element, said light source comprising light emitting diode means, means supporting said light emitting diode means in spaced relation to said light transmission element, and reflector means at the rear of said light transmission element for backlighting said instrument dial face display, said reflector means being positioned to reflect light from said light emitting diode means through said light transmission element to said diffuser element, said diffuser element diffusing the light received from said high light transmission element for uniformly illuminating said instrument dial face display.
Claim 3
Dependent Claim
33 words
An indicator dial system as defined in claim 1, wherein said instrument dial face display and said light diffuser element are laminated to said high light transmission element to provide dial face rigidity.
Claim 4
Dependent Claim
44 words
An indicator dial system as defined in claim 2, said light diffuser element being in the form of a thin polyester or vinyl based film and said high light transmission element being an acrylic material, said high light transmission material providing dial face rigidity.
Claim 5
Dependent Claim
23 words
An indicator dial system as defined in claim 1, said light diffuser element and said high light transmission element both being plastic materials.
Claim 6
Dependent Claim
35 words
An indicator dial system as defined in claim 1, said light diffuser element being in the form of a thin polyester or vinyl based film and said high light transmission element being an acrylic material.
Claim 7
Dependent Claim
24 words
An indicator dial system as defined in claim 1, employing a black and white, or a colored negative display of said instrument dial face.
Claim 8
Dependent Claim
53 words
An indicator dial system as defined in claim 4, employing a black and white, or a colored negative display of said instrument dial face, said dial face display containing indicia, the indicia on said negative film being formed by the color of said diffuser element at the exposed areas on said developed negative.
Claim 9
Dependent Claim
199 words
Illuminating dial and pointer system for instruments, which comprises an instrument cover case for said system, and containing a display of an instrument dial face having indicia thereon, dial pointer display means concentrically mounted for rotation with respect to said dial face display, said instrument dial face display being in the form of a developed photographic film for a reverse silk screened presentation of said instrument dial face, a light diffuser element, said dial face display positioned in front of said diffuser element and in contact therewith, a high light transmission element mounted to the rear of said light diffuser element and in contact therewith for supporting same, and a light source positioned to the rear of said high light transmission element for directing light thereto, said light source comprising light emitting diode means, and reflector means positioned to the rear of said high light transmission element, said light emitting diode means being positioned to direct light toward said reflector means, said reflector means directing reflected light to said high light transmission element, said diffuser element diffusing the light received from said high light transmission element and uniformly illuminating said instrument dial face display and said dial pointer means.
Claim 10
Dependent Claim
199 words
Illuminating dial and pointer system for instruments, which comprises an instrument cover case for said system, and containing a display of an instrument dial face having indicia thereon, dial pointer display means concentrically mounted for rotation with respect to said dial face display, said instrument dial face display being in the form of a developed photographic film for a reverse silk screened presentation of said instrument dial face, a light diffuser element, said dial face display positioned in front of said diffuser element and in contact therewith, a high light transmission element mounted to the rear of said light diffuser element and in contact therewith for supporting same, and a light source positioned to the rear of said high light transmission element for directing light thereto, said light source comprising light emitting diode means, and reflector means positioned to the rear of said high light transmission element, said light emitting diode means being positioned to direct light toward said reflector means, said reflector means directing reflected light to said high light transmission element, said diffuser element diffusing the light received from said high light transmission element and uniformly illuminating said instrument dial face display and said dial pointer means.
Claim 11
Dependent Claim
57 words
Illuminating dial and pointer system as defined in claim 8, said light emitting diode means comprising a light transmitting mounting member and a plurality of light emitting diodes positioned in spaced relation around the periphery of said mounting member, said reflector means being positioned to the rear of said mounting member and said light emitting diodes thereon.
Claim 12
Dependent Claim
81 words
Illuminating and pointer system as defined in claim 8, wherein said dial pointer display means comprises a pointer drum including a pointer display in the form of a photographic film or a reverse silk screened presentation of an instrument pointer, a second light diffuser element, said pointer display positioned in front of said last mentioned diffuser element and in contact therewith, and a second high light transmission element mounted to the rear of said second diffuser element and in contact therewith.
Claim 13
Dependent Claim
35 words
Illuminated dial and pointer system as defined in claim 10, said dial face display being centrally apertured and receiving said pointer drum for rotation with respect to said dial face display and the indicia thereon.
Claim 14
Dependent Claim
36 words
Illuminated dial and pointer system as defined in claim 8, said dial pointer display means comprising a pointer containing a layer of colored paint mixed with translucent gel to provide a predetermined uniform brightness of illumination.
Claim 15
Dependent Claim
62 words
Illuminated dial and pointer system as defined in claim 8, said dial pointer display means comprising a dial pointer, said dial face display being centrally apertured to receive said dial pointer for rotation with respect to said dial face display and the indicia thereon, and including additional light emission diode means mounted to the rear of said pointer for backlighting said pointer.
Claim 16
Dependent Claim
52 words
Illuminated dial and pointer system as defined in claim 13, said last mentioned light emitting diode means comprising a light bar containing a cluster of light emitting diodes, said assembly of said dial face display, said light diffuser element and said high light transmitting element being apertured to receive said light bar.
Claim 17
Dependent Claim
34 words
Illuminated dial and pointer system as defined in claim 8, wherein said instrument dial face display and said light diffuser element are laminated to said high light transmission element to provide dial face rigidity.
Claim 18
Dependent Claim
100 words
Illuminated dial and pointer system as defined in claim 15, wherein said dial pointer display means comprises a pointer drum including a pointer display in the form of a photographic film or a reverse silk screened presentation of an instrument pointer, a second light diffuser element, said pointer display positioned in front of said last mentioned diffuser element and in contact therewith and a second high light transmission element mounted to the rear of said diffuser element and in contact therewith, said pointer display and said second light diffuser element being laminated to said last mentioned high light transmission element.
Claim 19
Dependent Claim
54 words
Illuminated dial and pointer system as defined in claim 16, said light diffuser elements being in the form of a thin polyester or vinyl film and said high light transmission elements being an acrylic material, and employing a black and white, or a colored display of said dial face and of said pointer display.
Claim 20
Dependent Claim
24 words
Illuminated dial and pointer system as defined in claim 15, said light diffuser element and said high light transmission element both being plastic materials.
Claim 21
Dependent Claim
34 words
Illuminated dial pointer system as defined in claim 17, said light diffuser element being in the form of a thin polyester or vinyl film and said high light transmission element being an acrylic material.
Claim 22
Dependent Claim
23 words
Illuminated dial and pointer system as defined in claim 16, said light diffuser elements and said high light transmission elements being plastic materials.
Claim 23
Dependent Claim
202 words
An indicator dial system for instruments, which comprises a display of an instrument dial face in the form of a developed photographic film or a reverse silk screened presentation of said instrument dial face, a light diffuser element, said display of an instrument dial face being mounted on one side of said diffuser element, a high light transmission element mounted on the other side of said diffuser element and supporting same, and a light source spaced from and positioned on the opposite side of said high light transmission element from said diffuser element, said light source comprising light emitting diode means, said light emitting diode means comprising a mounting member and a plurality of light emitting diodes positioned in spaced relation around the periphery of said mounting member, and reflector means for backlighting said instrument dial face display, said light emitting diode means and said mounting member being positioned to direct light against said reflector means, said reflector means being mounted and positioned to reflect light from said light emitting diode means through said light transmission element to said diffuser element, said diffuser element diffusing the light received from said high light transmission element for uniformly illuminating said instrument dial face display.
Claim 24
Dependent Claim
202 words
An indicator dial system for instruments, which comprises a display of an instrument dial face in the form of a developed photographic film or a reverse silk screened presentation of said instrument dial face, a light diffuser element, said display of an instrument dial face being mounted on one side of said diffuser element, a high light transmission element mounted on the other side of said diffuser element and supporting same, and a light source spaced from and positioned on the opposite side of said high light transmission element from said diffuser element, said light source comprising light emitting diode means, said light emitting diode means comprising a mounting member and a plurality of light emitting diodes positioned in spaced relation around the periphery of said mounting member, and reflector means for backlighting said instrument dial face display, said light emitting diode means and said mounting member being positioned to direct light against said reflector means, said reflector means being mounted and positioned to reflect light from said light emitting diode means through said light transmission element to said diffuser element, said diffuser element diffusing the light received from said high light transmission element for uniformly illuminating said instrument dial face display.
Claim 25
Dependent Claim
73 words
An indicator dial system as defined in claim 21, wherein said instrument dial face display and said light diffuser element are laminated to said high light transmission element to form an assembly providing dial face rigidity, said light diffuser element and said high light transmission element both being plastic materials, said mounting member being transparent and said reflector means being positioned on the opposite side of said mounting member from said laminated assembly.
Claim 26
Dependent Claim
216 words
Illuminating dial and pointer system for instruments, which comprises an instrument cover case for said system, and containing a display of an instrument dial face having indicia thereon, dial pointer display means mounted for rotation with respect to said dial face display, said instrument dial face display being in the form of a developed photographic film or a reverse silk screened presentation of said instrument dial face, a light diffuser element, said dial face display positioned in front of said diffuser element and in contact therewith, a high light transmission element mounted to the rear of said light diffuser element and in contact therewith for supporting same, and a light source positioned to the rear of said high light transmission element for directing light thereto, said light source comprising light emitting diode means, and conically shaped reflector means comprising at least one conically shaped reflector for backlighting said dial face display, said light emitting diode means comprising a plurality of light emitting diodes positioned in spaced relation around the periphery of said reflector and positioned to direct light against said reflector and for directing reflected light from said reflector to said high light transmission element, said diffuser element diffusing the light received from said high light transmission element and uniformly illuminating said instrument dial face display.
Claim 27
Dependent Claim
216 words
Illuminating dial and pointer system for instruments, which comprises an instrument cover case for said system, and containing a display of an instrument dial face having indicia thereon, dial pointer display means mounted for rotation with respect to said dial face display, said instrument dial face display being in the form of a developed photographic film or a reverse silk screened presentation of said instrument dial face, a light diffuser element, said dial face display positioned in front of said diffuser element and in contact therewith, a high light transmission element mounted to the rear of said light diffuser element and in contact therewith for supporting same, and a light source positioned to the rear of said high light transmission element for directing light thereto, said light source comprising light emitting diode means, and conically shaped reflector means comprising at least one conically shaped reflector for backlighting said dial face display, said light emitting diode means comprising a plurality of light emitting diodes positioned in spaced relation around the periphery of said reflector and positioned to direct light against said reflector and for directing reflected light from said reflector to said high light transmission element, said diffuser element diffusing the light received from said high light transmission element and uniformly illuminating said instrument dial face display.
Claim 28
Dependent Claim
71 words
Illuminated dial and pointer display system as defined in claim 23, said conically shaped reflector means including a pair of conically shaped reflectors, said light emitting diodes mounted around the periphery of one of said reflectors the angles of said reflectors being selected and said reflectors being positioned with respect to each other for directing reflected light from said reflectors to said high light transmission element of said dial face display.
Claim 29
Dependent Claim
107 words
Illuminated dial and pointer system as defined in claim 23, wherein said dial pointer display means comprises a pointer drum including a pointer display in the form of a photographic film or a reverse silk screened presentation of an instrument pointer, a second light diffuser element, said pointer display positioned in front of said last mentioned diffuser element and in contact therewith, and a second high light transmission element mounted to the rear of said second diffuser element and in contact therewith, said dial face display being centrally apertured and receiving said pointer drum for rotation with respect to said dial face display and the indicia thereon.
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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) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |