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 Title: |
US4345395:
Method and apparatus for producing day-night pictures
[ Derwent Title ]
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| Country: |
US United States of America
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| Inventor: |
Grassi, Gloria; Ontario, CA 91764
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| Assignee: |
None
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| Published / Filed: |
1982-08-24
/ 1980-12-01
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| Application Number: |
US1980000211737
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| IPC Code: |
Advanced:
G09F 13/34;
Core:
G09F 13/00;
IPC-7:
A63J 3/00;
G09F 13/06;
G09F 19/00;
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| ECLA Code: |
G09F13/34;
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| U.S. Class: |
Current:
040/441;
040/406;
040/437;
040/579;
362/811;
472/065;
Original:
040/441;
040/579;
040/437;
040/406;
362/811;
272/008.D;
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| Field of Search: |
040/160,442,427,439,441,440,431,406,436,437,438,432,444,541,580,152.2,579,443
362/806,811,812
428/003,7,8,9
272/8 D
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| Priority Number: |
| 1980-12-01 |
US1980000211737 |
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| Abstract: |
A day-night picture achieves a realistic reproduction of the twinkling of distant city lights or the like, by backlighting small apertures in the picture with a fine, randomly moving reflection pattern obtained by suspending pieces of crumpled reflective foil from fine threads behind the picture above a light source whose heat creates convection currents which slowly move the foil pieces in a random manner.
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| Attorney, Agent or Firm: |
Weissenberger and Peterson ;
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| Primary / Asst. Examiners: |
Peshock, Robert; Foycik, Michael J.
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| INPADOC Legal Status: |
Show legal status actions
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| Family: |
None
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First Claim:
Show all 7 claims |
I claim:
1. A day-night picture assembly comprising:
- (a) a generally opaque picture having a large number of small translucent apertures therein;
- (b) a generally opaque frame forming an enclosure behind said picture;
- (c) a light source disposed in said enclosure; and
- (d) randomly movable, multi-faceted reflector means consisting of balls of crumpled reflective foil, each ball suspended from the top of said enclosure behind said picture by a single thread-like, easily twistable suspensions means, said reflector means being movable back and forth and capable of turning and twisting;
- (e) said light source being of a heat-producing type and being so positioned within said enclosure as to expose said reflector means to convection air currents generated by the heat produced by said light source, said convection air current causing said back and forth and turning and twisting movement of said reflector means.
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| Background / Summary: |
Show background / summary
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| Drawing Descriptions: |
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| Description: |
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| Forward References: |
Show 8 U.S. patent(s) that reference this one
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