Tape recorder brake assembly
Abstract
Abstract A TAPE RECORDER BRAKE ASSEMBLY STOPS THE TAPE TAKEUP AND SUPPLY REELS QUICKLY AND WITHOUT TAPE BREAKAGE OR SPILLAGE IN THE EVENT OF A POWER FAILURE DURING HIGH SPEED TAPE HANDLING OPERATIONS. EACH REEL IS PROVIDED WITH A BRAKE MECHANISM INCLUDING A SOLENOID NORMALLY ENERGIZED TO OVERCOME A SPRING FORCE AND TO WITHDRAW A BRAKE SHOE FROM THE REEL DRIVE SHAFT. THE BRAKE SHOE IS SUPPORTED ON AN ARM FASTENED TO A SLOT IN THE SOLENOID ARMATURE BY A RESILIENT COUPLING. WHEN THE SOLENOID IS DEENERGIZED, AS UPON A POWER FAILURE, THE BRAKE SHOE IS APPLIED TO THE SHAFT BY THE SPRING. THE ARM EXTENDS THROUGH A SLOT WHICH ACTS AS A FULCRUM OR PIVOT POINT FOR THE ARM. THE SLOT, ARM AND SHOE ARE ARRANGED SO THAT IF THE REEL IS MOVING IN THE SUPPLY DIRCTION THE BRAKING FORCE IS GREATER THAN IF THE REEL IS MOVING IN THE TAKEUP DIRECTION. THE BRAKING SHAFT BY THE SPRING. THE ARM EXTENDS THROUGH A SLOT WHICH QUICKLY TO A HALT, BUT THE BRAKING FORCE DIFFERENTIAL BETWEEN TE TWO REELS IS NOT GREAT ENOUGH TO STRETCH OR BREAK THE TAPE.
Inventors
- 👤 Grant L Mcmillin Jr
Bibliographic Details
Claims Analysis
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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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |