Patent US3606392A successfully refreshed from Google Patents.
US3606392A
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Vibration dampener
Assignee: Smith Industries International Inc
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Filing: 1969-04-14
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Granted: 1971-09-20
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Expires: 1989-04-14
Abstract
Abstract A VIBRATION DAMPENER MAY BE USED BETWEEN THE DRILL STEEL AND POWER SWIVEL OF A BORING MACHINE. AN ANNULAR STACK OF ALTERNATING RUBBER AND METAL RINGS BONDED TOGETHER AND VULCANIZED, AND INCLUDING OFFSET PORTIONS, PROVIDE MEANS TO TRANSMIT FLUID, TORQUE, AND COMPRESSION. A PAIR OF TUBES WITH A LOST MOTION CONNECTION THEREBETWEEN DISPOSED INSIDE THE ANNULAR STACK PROVIDES MEANS TO TRANSMIT TENSION.
Inventors
- 👤 William R Garrett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:35
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/04; E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/07; E21B17/073; F16L55/02; F16L55/033; F16L55/0332
Claims Analysis
Total Claims: 0
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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 |