US3171291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical amplifier
Assignee: Curtiss Wright Corp
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Filing: 1962-08-17
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Granted: 1965-03-02
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Expires: 1982-08-17
Abstract
No abstract record available.
Inventors
- 👤 Lell E Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:23
CPC Classifications
G; G05; G05G; G05G19/00; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19535
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
IN COMBINATION, A PAIR OF ROTATABLE DRUMS, A PAIR OF NORMALLY FIXED DRUMS ONE OF WHICH IS AXIALLY ALIGNED WITH ONE OF THE ROTATABLE DRUMS AND THE OTHER OF WHICH IS AXIALY ALIGNED WITH THE OTHER ROTATABLE DRUM, MEANS FOR ROTATING ONE OF THE ROTATABLE DRUMS IN ONE DIRECTION AND THE OTHER ROTATABLE DRUM IN THE OPPOSITE DIRECTION INCLUDING A DIFFERENTIAL FOR EACH ROTATABLE DRUM, A BAND WRAPPED AROUND ONE ROTATABLE DRUM AND HAVING ONE END SECURED TO THE NORMALLY FIXED DRUM AXIALLY ALIGNED THEREWITH, ANOTHER BAND WRAPPED AROUND THE OTHER ROTATABLE DRUM AND HAVING ONE END SECURED TO THE NORMALLY FIXED DRUM AXIALLY ALIGNED WITH SUCH ROTATABLE DRUM, MEANS FOR ADJUSTING THE NORMALLY FIXED DRUMS IN INITIALLY SET TENSION IN THE BANDS, ACTUATING MEANS SECURED TO THE BANDS FOR TIGHTENING ONE BAND AND LOOSING THE OTHER ON THE DRUMS UPON WHICH THE BANDS ARE WRAPPED, AND AN OUTPUT
Claim 2
Dependent Claim
149 words
IN COMBINATION, A PAIR OF ROTATABLE DRUMS, A PAIR OF NORMALLY FIXED DRUMS ONE OF WHICH IS AXIALLY ALIGNED WITH ONE OF THE ROTATABLE DRUMS AND THE OTHER OF WHICH IS AXIALY ALIGNED WITH THE OTHER ROTATABLE DRUM, MEANS FOR ROTATING ONE OF THE ROTATABLE DRUMS IN ONE DIRECTION AND THE OTHER ROTATABLE DRUM IN THE OPPOSITE DIRECTION INCLUDING A DIFFERENTIAL FOR EACH ROTATABLE DRUM, A BAND WRAPPED AROUND ONE ROTATABLE DRUM AND HAVING ONE END SECURED TO THE NORMALLY FIXED DRUM AXIALLY ALIGNED THEREWITH, ANOTHER BAND WRAPPED AROUND THE OTHER ROTATABLE DRUM AND HAVING ONE END SECURED TO THE NORMALLY FIXED DRUM AXIALLY ALIGNED WITH SUCH ROTATABLE DRUM, MEANS FOR ADJUSTING THE NORMALLY FIXED DRUMS IN INITIALLY SET TENSION IN THE BANDS, ACTUATING MEANS SECURED TO THE BANDS FOR TIGHTENING ONE BAND AND LOOSING THE OTHER ON THE DRUMS UPON WHICH THE BANDS ARE WRAPPED, AND AN OUTPUT
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-01 | 1968-08-31 | 1969-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-01 | 1972-08-31 | 1973-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-01 | 1976-08-31 | 1977-03-02 | $7700.00 | Window Closed / Lapsed |