Paging receiver having cycling mass
Abstract
Abstract 1. A PERSONAL PAGING DEVICE COMPRISING A SUPPORTING STRUCTURE, SENSING MEANS CARRIED BY SAID STRUCTURE AND RESPONSIVE TO SPACE-TRANSMITTED ENERGY FOR PROVIDING AN ALTERTING SIGNAL COMPRISING A TRAIN OF REGULARLY SPACED ELECTRICAL PULSES, NORMALLY INACTIVE VIBRATOR MEANS FOR VIBRATING SAID STRUCTURE, SAID VIBRATOR MEANS INCLUDING AN ECCENTRIC MASS SUPPORTED FOR CYCLIC MOVEMENT AND ELECTRIC MOTIVE MEANS RESPONSIVE TO SAID ALTERTING SIGNAL FOR DRIVING SAID MASS THROUGH A RANGE OF VIBRATIONAL FREQUENCIES TOWARD A STEADY-STATE FREQUENCY, EACH OF SAID PULSES IN SAID ALTERTING SIGNAL BEING OF A LENGTH TO ENDURE FOR A PERIOD OF TIME LONGER THAN A CYCLE OF SAID (SIGNAL AT SAID STEADY) VIBRATOR MEANS AT SAID STEADY STATE FREQUENCY OF VIBRATOR.
Inventors
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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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |