Patent US3153515A successfully refreshed from Google Patents.
US3153515A
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Differential braking system for tape transport mechanism
Assignee: SCULLY RECORDING INSTRUMENTS CORP
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Filing: 1962-03-15
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Granted: 1964-10-20
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Expires: 1982-03-15
Abstract
No abstract record available.
Inventors
- 👤 Lawrence J Scully
- 👤 Arthur E Gruber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:10
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/18; G11B15/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A SYSTEM FOR DIFFERENTIALLY BRAKING THE TAPE TRANSPORT REELS OF A TAPE TRANSPORT MECHANISM, WHICH COMPRISES: (A) A PAIR OF TAPE TRANSPORT REELS; (B) A MOTOR CONNECTED TO EACH OF SAID REELS; (C) A SOLENOID ACTUATED BRAKE MECHANISM ACTION ON EACH OF SAID MOTORS; (D) ELECTRICAL CIRCUIT MEANS FOR ENERGIZING BOTH OF THE SOLENOID ACTUATED BRAKE MECHANISMS TO RELEASE EACH OF THE BRAKE MECHANISMS; AND (E) ELECTRICAL CIRCUIT MEANS FOR REDUCING THE VOLTAGE SUPPLIED TO ONE OF THE SOLENOID BRAKE MECHANISMS WHEN THE OTHER SOLENOID ACTUATED BRAKE MECHANISM IS DE-ENERGIZED.
Claim 2
Independent Claim
90 words
A SYSTEM FOR DIFFERENTIALLY BRAKING THE TAPE TRANSPORT REELS OF A TAPE TRANSPORT MECHANISM, WHICH COMPRISES: (A) A PAIR OF TAPE TRANSPORT REELS; (B) A MOTOR CONNECTED TO EACH OF SAID REELS; (C) A SOLENOID ACTUATED BRAKE MECHANISM ACTION ON EACH OF SAID MOTORS; (D) ELECTRICAL CIRCUIT MEANS FOR ENERGIZING BOTH OF THE SOLENOID ACTUATED BRAKE MECHANISMS TO RELEASE EACH OF THE BRAKE MECHANISMS; AND (E) ELECTRICAL CIRCUIT MEANS FOR REDUCING THE VOLTAGE SUPPLIED TO ONE OF THE SOLENOID BRAKE MECHANISMS WHEN THE OTHER SOLENOID ACTUATED BRAKE MECHANISM IS DE-ENERGIZED.
References Cited (Backward Citations)
US2967673A
Cited
US2983339A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-10-20 | 1968-04-20 | 1968-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-20 | 1972-04-20 | 1972-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-20 | 1976-04-20 | 1976-10-20 | $7700.00 | Window Closed / Lapsed |