US4457580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display for electronic games and the like including a rotating focusing device
Assignee: Mattel Inc
•
Filing: 1983-02-24
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Granted: 1984-07-03
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Expires: 2003-02-24
Abstract
Abstract An electro-mechanical display including a rotating focusing device and at least one light source. The position of the focusing device is monitored and the light source turned on under computer control to produce at a viewing position a plurality of light indications from a single source.
Inventors
- 👤 George J. Klose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:48
CPC Classifications
G; G09; G09F; G09F19/00; G09F19/12; G09F19/16; G02; G02B; G02B27/00; G02B27/10; G02B27/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A display comprising a mirror, means for rotating the mirror about an axis, position means for determining the angular position of the mirror, first and second light sources designed to radiate light of first and second primary colors, respectively, the light sources positioned adjacent each other in a line perpendicular to the axis of rotation of the mirror, each light source being oriented to radiate light onto a surface of the mirror, from where the light is reflected onto a focusing plane at a point which is a function of the angular position of the mirror, and control means operatively connected to the light sources and responsive to the position means for energizing the first and second light sources at peredetermined angular positions of the mirror to cause the light from both the first and second light sources to appear at the same point on the focusing plane to produce an image having a third color.
Claim 2
Dependent Claim
156 words
A display comprising a mirror, means for rotating the mirror about an axis, position means for determining the angular position of the mirror, first and second light sources designed to radiate light of first and second primary colors, respectively, the light sources positioned adjacent each other in a line perpendicular to the axis of rotation of the mirror, each light source being oriented to radiate light onto a surface of the mirror, from where the light is reflected onto a focusing plane at a point which is a function of the angular position of the mirror, and control means operatively connected to the light sources and responsive to the position means for energizing the first and second light sources at peredetermined angular positions of the mirror to cause the light from both the first and second light sources to appear at the same point on the focusing plane to produce an image having a third color.
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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) | 1987-07-03 | 1988-01-02 | 1988-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-03 | 1992-01-02 | 1992-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-03 | 1996-01-02 | 1996-07-03 | $7700.00 | Window Closed / Lapsed |