US3307828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque reducing means
Assignee: Baldwin Lima Hamilton Corp
•
Filing: 1966-06-29
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Granted: 1967-03-07
•
Expires: 1986-06-29
Abstract
No abstract record available.
Inventors
- 👤 Richard B Willi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:15
CPC Classifications
F; F03; F03B; F03B3/00; F03B3/02; F03B11/00; F03B11/002; F03B15/00; F03B15/005; Y; Y02; Y02E; Y02E10/00; Y02E10/20; Y10; Y10S; Y10S415/00; Y10S415/91
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A HYDRAULIC MACHINE COMPRISING A RUNNER, SAID RUNNER INCLUDING A PLURALITY OF BLADES, A PLURALITY OF WICKET GATES MOUNTED IN SAID HYDRAULIC MACHINE, SAID WICKET GATES HAVING AN OPENED AND A CLOSED POSITION, AN ANNULAR CHAMBER DEFINED BETWEEN SAID RUNNER AND SAID WICKET GATES WHEN SAID WICKET GATES ARE IN CLOSED POSITION, MEANS FOR INTRODUCING COMPRESSED AIR INTO SAID CHAMBER AND THE SPACE BELOW THE BLADES, MEANS SELECTIVELY COMMUNICATING WITH SAID ANNULAR CHAMBER FOR VENTING SAID ANNULAR CHAMBER TO ATMOSPHERE.
Claim 2
Dependent Claim
80 words
A HYDRAULIC MACHINE COMPRISING A RUNNER, SAID RUNNER INCLUDING A PLURALITY OF BLADES, A PLURALITY OF WICKET GATES MOUNTED IN SAID HYDRAULIC MACHINE, SAID WICKET GATES HAVING AN OPENED AND A CLOSED POSITION, AN ANNULAR CHAMBER DEFINED BETWEEN SAID RUNNER AND SAID WICKET GATES WHEN SAID WICKET GATES ARE IN CLOSED POSITION, MEANS FOR INTRODUCING COMPRESSED AIR INTO SAID CHAMBER AND THE SPACE BELOW THE BLADES, MEANS SELECTIVELY COMMUNICATING WITH SAID ANNULAR CHAMBER FOR VENTING SAID ANNULAR CHAMBER TO ATMOSPHERE.
References Cited (Backward Citations)
US3238534A
Cited
US9236498B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |