US3749484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Programmed illumination of panel display sections
Assignee: Individual
•
Filing: 1971-01-07
•
Granted: 1973-07-31
•
Expires: 1991-01-07
Abstract
Abstract The disclosure concerns control apparatus, usable for controlling information displays, and including a bi-stable mechanical switching device adapted to be set and re-set, and a programming element such as a sheet or drum movable between programming positions in which a shoulder or opening is selectively presented for controlling setting or re-setting of the switch device as the element is further moved in its programming position.
Inventors
- 👤 K Busche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:07
CPC Classifications
G; G03; G03B; G03B23/00; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/07; G05B19/075
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
148 words
In combination with a screen, multiple switches and multiple projector assemblies connected to be controllable by said switches so as to project sequences of images onto the screen in response to sequential operation of the switches, the combination for each switch of a. a member alternately movable in first and second directions for closing and opening the switch, b. actuator structure including yieldable means through which force is transmissible to move said member in said directions, said actuator structure including a follower adapted to advance and retract and to transmit force to said yieldable means, and c. holder means to controllably block and unblock movement of said member in said directions during said force transmission via said yieldable means, and including pro-gramming means to advance selected followers in certain positions of the programming means and to move relative to selected followers in other positions of the programming means.
Claim 2
Dependent Claim
148 words
In combination with a screen, multiple switches and multiple projector assemblies connected to be controllable by said switches so as to project sequences of images onto the screen in response to sequential operation of the switches, the combination for each switch of a. a member alternately movable in first and second directions for closing and opening the switch, b. actuator structure including yieldable means through which force is transmissible to move said member in said directions, said actuator structure including a follower adapted to advance and retract and to transmit force to said yieldable means, and c. holder means to controllably block and unblock movement of said member in said directions during said force transmission via said yieldable means, and including pro-gramming means to advance selected followers in certain positions of the programming means and to move relative to selected followers in other positions of the programming means.
Claim 3
Dependent Claim
43 words
The system of claim 1 wherein certain of said projector assemblies include, in each assembly, a light projector, a series of image forming transparencies, and switch controlled drive structure operable to advance said transparencies for sequential presentation in the path of projected light.
References Cited (Backward Citations)
US3205765A
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US3175057A
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US3432645A
Cited
US3479473A
Cited
US3620611A
Cited
US3551042A
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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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |