US3233510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronizing means for slide projector and sound recorder
Assignee: Individual
•
Filing: 1962-09-19
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Granted: 1966-02-08
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Expires: 1982-09-19
Abstract
No abstract record available.
Inventors
- 👤 Robert H C Harrison
- 👤 Bamber Alwin Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:58
CPC Classifications
G; G03; G03B; G03B31/00; G03B31/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
THE COMBINATION OF A SLIDE PROJECTOR INCLUDING A REMOTELY CONTROLLABLE SLIDE MAGAZINE WHEREBY A PLURALITY OF SLIDE PICTURES MAY BE PROJECTED IN SUCCESSION, A SOUND RECORDING DEVICE, AND A CONTROL UNIT WHEREBY OPERATION OF SAID SOUND RECORDING DEVICE MAY BE SYNCHRONIZED WITH PROJECTION OF SUCCESSIVE PICTURES BY SAID SLIDE PROJECTOR, SAID CONTROL UNIT INCLUDING SWITCH MEANS FOR SIMULTANEOUSLY ENERGIZING AND DE-ENERGIZING SAID PROJECTOR AND SAID SOUND RECORDING DEVICE, AND A TIMER MECHANISM INCLUDING A FIRST CYCLING SWITCH MEANS IN CIRCUIT WITH SAID SLIDE MAGAZINE FOR INTERMITTENLY ACTUATING THE SAME, A TIMING SIGNAL LAMP, AND A SECOND CYCLING SWITCH MEANS IN CIRCUIT WITH SAID LAMP FOR INTERMITTENTLY ENERGIZING AND DE-ENERGIZING THE SAME IN PREDETERMINED SYNCHRONIZATION WITH THE INTERMITTENT ACTUATION OF THE SLIDE MAGAZINE BY SAID FIRST CYCLING SWITCH MEANS.
Claim 2
Dependent Claim
128 words
THE COMBINATION OF A SLIDE PROJECTOR INCLUDING A REMOTELY CONTROLLABLE SLIDE MAGAZINE WHEREBY A PLURALITY OF SLIDE PICTURES MAY BE PROJECTED IN SUCCESSION, A SOUND RECORDING DEVICE, AND A CONTROL UNIT WHEREBY OPERATION OF SAID SOUND RECORDING DEVICE MAY BE SYNCHRONIZED WITH PROJECTION OF SUCCESSIVE PICTURES BY SAID SLIDE PROJECTOR, SAID CONTROL UNIT INCLUDING SWITCH MEANS FOR SIMULTANEOUSLY ENERGIZING AND DE-ENERGIZING SAID PROJECTOR AND SAID SOUND RECORDING DEVICE, AND A TIMER MECHANISM INCLUDING A FIRST CYCLING SWITCH MEANS IN CIRCUIT WITH SAID SLIDE MAGAZINE FOR INTERMITTENLY ACTUATING THE SAME, A TIMING SIGNAL LAMP, AND A SECOND CYCLING SWITCH MEANS IN CIRCUIT WITH SAID LAMP FOR INTERMITTENTLY ENERGIZING AND DE-ENERGIZING THE SAME IN PREDETERMINED SYNCHRONIZATION WITH THE INTERMITTENT ACTUATION OF THE SLIDE MAGAZINE BY SAID FIRST CYCLING SWITCH MEANS.
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |