US3689139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical projector
Assignee: Individual
•
Filing: 1969-09-22
•
Granted: 1972-09-05
•
Expires: 1989-09-22
Abstract
Abstract An optical projector in which the light beam is projected from a light source through a lens system and a slide onto a screen, the slide having two light-transmitting walls containing two or more immiscible fluids, at least one fluid being colored and at least one of the walls of the slide being flexible so that interplay between flexible wall and the fluids causes relative motion between the fluids, this slide being supported in a slide carrier means which are arranged to be moved, either rotated around an axis or reciprocated, by movable means so that the light beam projects different parts of the slide into the screen to give changing colored images.
Inventors
- 👤 Alexauder Gross
- 👤 Ilene Astrahan Gross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:32
CPC Classifications
G; G09; G09F; G09F19/00; G09F19/12; G09F19/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
166 words
In combination, an optical projector and a slide, the optical projector including means defining a light beam path to a screen or other surface, and slide carrier means for supporting a slide in said path, the slide having two opposed, generally parallel light-transmitting walls defining between them a space containing two or more immiscible fluids, at least one of the fluids being colored and being of different appearance from at least one other of the fluids and at least one of the walls being flexible in the path of said light beam so that the flexible wall is deformed when the flUids are disturbed and the optical projector further including movable means for moving the slide carrier means so that the slide is moved causing the fluids to be disturbed and the flexible wall to be disturbed while a part of the slide is projected onto the screen or other surface whereby said flexible wall is constituted as means producing a changing image on said screen.
Claim 2
Dependent Claim
166 words
In combination, an optical projector and a slide, the optical projector including means defining a light beam path to a screen or other surface, and slide carrier means for supporting a slide in said path, the slide having two opposed, generally parallel light-transmitting walls defining between them a space containing two or more immiscible fluids, at least one of the fluids being colored and being of different appearance from at least one other of the fluids and at least one of the walls being flexible in the path of said light beam so that the flexible wall is deformed when the flUids are disturbed and the optical projector further including movable means for moving the slide carrier means so that the slide is moved causing the fluids to be disturbed and the flexible wall to be disturbed while a part of the slide is projected onto the screen or other surface whereby said flexible wall is constituted as means producing a changing image on said screen.
Claim 3
Dependent Claim
33 words
A combination according to claim 1, wherein the movable means is arranged to rotate the slide carrier means so that the light beam describes a circle on the slide as it is rotated.
Claim 4
Dependent Claim
214 words
In combination, an optical projector and a slide, the optical projector including a light source, a means for projecting a light beam from the light source along a path onto a screen or other surface, and slide carrier means for supporting a slide in the path of the light beam, the slide having two opposed, generally parallel light-transmitting walls defining between them a space containing two or more immiscible fluids at least one of the fluids being colored and being of different appearance from at least one other of the fluids and at least one of the walls being flexible so that the flexible wall is deformed when the fluids are disturbed and the optical projector further including movable means for moving the slide carrier means so that the slide is moved causing the fluids to be disturbed and the flexible wall to be disturbed while the light beam is projecting a part of the slide onto the screen or other surface whereby said flexible wall is constituted as means producing a changing image on said screen, and wherein the slide carrier means includes two light-transmitting walls and securement means for holding the two walls together to embrace the slide and the movable means includes a motor arranged to rotate the slide carrier means.
Claim 5
Dependent Claim
214 words
In combination, an optical projector and a slide, the optical projector including a light source, a means for projecting a light beam from the light source along a path onto a screen or other surface, and slide carrier means for supporting a slide in the path of the light beam, the slide having two opposed, generally parallel light-transmitting walls defining between them a space containing two or more immiscible fluids at least one of the fluids being colored and being of different appearance from at least one other of the fluids and at least one of the walls being flexible so that the flexible wall is deformed when the fluids are disturbed and the optical projector further including movable means for moving the slide carrier means so that the slide is moved causing the fluids to be disturbed and the flexible wall to be disturbed while the light beam is projecting a part of the slide onto the screen or other surface whereby said flexible wall is constituted as means producing a changing image on said screen, and wherein the slide carrier means includes two light-transmitting walls and securement means for holding the two walls together to embrace the slide and the movable means includes a motor arranged to rotate the slide carrier means.
Claim 6
Dependent Claim
40 words
A combination according to claim 1, including a housing for housing the light source and means for projecting the light beam, this housing including a light-transmitting screen arranged to receive the light beam and be viewed from outside the housing.
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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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |