US3581307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct view high intensity readout module having conical light conveyor tube
Assignee: Individual
•
Filing: 1968-05-29
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Granted: 1971-05-25
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Expires: 1988-05-29
Abstract
Abstract A direct view high intensity readout module primarily designed for seven segment digital readout systems in which seven incandescent bulbs are connected to a different pin of a nine terminal vacuum tube base, one of the terminals being common and one of the terminals preferably being coupled for a period indication. A light conveyor tube surrounds each of the incandescent bulbs on one end, the other end forming a segment of the seven segment numerical readout. A heat sink is in physical contact with each of the seven light conveyor tubes. A nonglare frosted face plate is cemented over the segment end of the light conveyor tubes.
Inventors
- 👤 Jack D Mckim
- 👤 Harold W Ulmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:43
CPC Classifications
G; G09; G09F; G09F9/00; G09F9/30; G09F9/307; Y; Y10; Y10S; Y10S385/00; Y10S385/901
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
97 words
A direct view high intensity readout module comprising: a plurality of light sources having first and second electric leads for energization thereof; a hollow light conveyor tube having a conical reflecting inner surface surrounding each of said light sources on one end thereof, another end of each of said light conveyor tubes being shaped to form readout indicia, said hollow light conveyor tubes having a geometry for causing a direct impingement of light from said light sources to all parts of said another end; and a translucent cover fixedly attached over the face of said readout indicia.
Claim 2
Dependent Claim
97 words
A direct view high intensity readout module comprising: a plurality of light sources having first and second electric leads for energization thereof; a hollow light conveyor tube having a conical reflecting inner surface surrounding each of said light sources on one end thereof, another end of each of said light conveyor tubes being shaped to form readout indicia, said hollow light conveyor tubes having a geometry for causing a direct impingement of light from said light sources to all parts of said another end; and a translucent cover fixedly attached over the face of said readout indicia.
Claim 3
Dependent Claim
21 words
The direct view high intensity readout module of claim 1 and further including: a potting material surrounding said light conveyor tubes.
Claim 4
Dependent Claim
26 words
The direct view high intensity readout module of claim 1 and further including: a common heat sink surrounding and abutting all of said light conveyor tubes.
References Cited (Backward Citations)
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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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |