Spring-applied,electrically-released brake
Abstract
Abstract A BRAKE DISK CONNECTED TO ROTATE WITH A SHAFT IS CONFINED BETWEEN A MOUNTING PLATE AND AN ARMATURE PLATE. IN ONE EMBODIMENT, THE DISK IS FIXEED TO THE SHAFT. IN ANOTHER AND PREFERRED EMBODIMENT, THE DISK FLOATS AND MAY BE CLAMPED BETWEEN SAID PLATES. THE MOUNTING PLATE HAS ARMS ON WHICH THE ARMATURE PLATE IS GUIDED, A CORE FRAME CONNECTED WITH SUCH ARMS COMPRISES LONG AND SHORT STRAPS FASTENED TOGETHER AND PROVIDING INNER AND OUTER POLES BETWEEN WHICH A SPOOL CARRIES THE MAGNETIC WINDING. A COMPRESSION SPRING ENGAGING THE SHORTER STRAP BETWEEN THE INNER POLES SERVES TO BIAS THE ARMATURE PLATE TOWARD ENGAGEMENT WITH THE BRAKE DISK. WHEN THE WINDING IS ENERGIZED THE SEVERAL POLES ATTRACT THE ARMATURE PLATE TO RELEASE THE DISK.
Inventors
- 👤 Richard H Mccarthy
Bibliographic Details
Claims Analysis
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-09-19 | 1975-03-21 | 1975-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-19 | 1979-03-21 | 1979-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-19 | 1983-03-21 | 1983-09-20 | $7700.00 | Window Closed / Lapsed |