Patent US3606233A successfully refreshed from Google Patents.
US3606233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibration isolation system
Assignee: RTX BBN Technologies Corp
•
Filing: 1968-04-22
•
Granted: 1971-09-20
•
Expires: 1988-04-22
Abstract
Abstract A VIBRATION ISOLATION SYSTEM FOR MECHANICALLY COUPLING A MASS TO A SOURCE OF VIBRATORY ENERGY, WHILE REDUCING TRANSMISSIBILITY OF THE VIBRATING ENERGY TO THE MASS. THE SYSTEM IS A HYBRID DEVICE, COMBINING BOTH PASSIVE AND ACTIVE ISOLATION APPARATUS FOR PRODUCING ISOLATION OVER A PRESCRIBED FREQUENCY RANGE OF THE GENERATED VIBRATIONS, WHILE PERMITTING THE MASS TO BE RIGIDLY COUPLED TO THE SOURCE FOR FREQUENCIES BELOW THE ISOLATION RANGE. THE HYBRID SYSTEM HAS PARTICULAR APPLICATION IN A HELICOPTER TO COUPLE THE FUSELAGE TO THE ROTOR, PRODUCING ISOLATION WITH RESPECT TO VIBRATIONS ABOVE THE HELICOPTER CONTROL FREQUENCY RANGE.
Inventors
- 👤 Terry D Scharton
- 👤 David A Bies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:08
CPC Classifications
B; B64; B64C; B64C27/00; B64C27/001; F; F16; F16F; F16F15/00; F16F15/02; B64C2027/004
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 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 |