US3179003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Horologe with time indication projected on screen
Assignee: Zenith Electronics LLC
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Filing: 1962-04-27
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Granted: 1965-04-20
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Expires: 1982-04-27
Abstract
No abstract record available.
Inventors
- 👤 Clement R Tompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:27
CPC Classifications
G; G04; G04B; G04B19/00; G04B19/34; Y; Y10; Y10S; Y10S116/00; Y10S116/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A PROJECTION CLOCK FOR INDICATING TIME IN HOURS AND MINUTES COMPRISING: A DIGITAL READOUT DEVICE FOR INDICATING THE HOUR INCLUDING A TRANSLUCENT SCREEN AREA, A LIGHT SOURCE HAVING A BEAM PATH TO SAID TRANSLUCENT SCREEN AREA, LIGHT IMPEDING MEANS HAVING A PORTION THEREOF INTERMEDIATE SAID LIGHT SOURCE AND SAID SCREEN AREA INCLUDING A MOVABLE DEVICE HAVING LIGHT TRANSPARENT AREAS, EACH OF SAID AREAS DESIGNATING A PARTICULAR HOUR, ADAPTED TO BE INTERPOSED IN SAID BEAM PATH TO ALLOW LIGHT TO BE PROJECTED THROUGH A SELECTED AREA ONTO SAID TRANSLUCENT SCREEN TO FORM AN IMAGE THEREON INDICATING THE HOUR, AND MEANS COUPLED TO SAID MOVABLE DEVICE FOR SUCCESSIVELY CHANGING SAID AREA IN SAID BEAM PATH ONLY ONCE EACH HOUR; AND MEANS FOR DISPLAYING THE MINUTE BY AN AZIMUTH INDICATION ALONG THE CIRCUMFERENCE OF SAID SCREEN AREA, INCLUDING MEANS FOR MOVING SAID AZIMUTH INDICATION ALONG SAID CIRCUMFERENCE.
Claim 2
Dependent Claim
144 words
A PROJECTION CLOCK FOR INDICATING TIME IN HOURS AND MINUTES COMPRISING: A DIGITAL READOUT DEVICE FOR INDICATING THE HOUR INCLUDING A TRANSLUCENT SCREEN AREA, A LIGHT SOURCE HAVING A BEAM PATH TO SAID TRANSLUCENT SCREEN AREA, LIGHT IMPEDING MEANS HAVING A PORTION THEREOF INTERMEDIATE SAID LIGHT SOURCE AND SAID SCREEN AREA INCLUDING A MOVABLE DEVICE HAVING LIGHT TRANSPARENT AREAS, EACH OF SAID AREAS DESIGNATING A PARTICULAR HOUR, ADAPTED TO BE INTERPOSED IN SAID BEAM PATH TO ALLOW LIGHT TO BE PROJECTED THROUGH A SELECTED AREA ONTO SAID TRANSLUCENT SCREEN TO FORM AN IMAGE THEREON INDICATING THE HOUR, AND MEANS COUPLED TO SAID MOVABLE DEVICE FOR SUCCESSIVELY CHANGING SAID AREA IN SAID BEAM PATH ONLY ONCE EACH HOUR; AND MEANS FOR DISPLAYING THE MINUTE BY AN AZIMUTH INDICATION ALONG THE CIRCUMFERENCE OF SAID SCREEN AREA, INCLUDING MEANS FOR MOVING SAID AZIMUTH INDICATION ALONG SAID CIRCUMFERENCE.
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |