US3332441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wicket gate end seals
Assignee: Allis Chalmers Corp
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Filing: 1964-09-02
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Granted: 1967-07-25
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Expires: 1984-09-02
Abstract
No abstract record available.
Inventors
- 👤 Robert G Schaale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:14
CPC Classifications
F; F03; F03B; F03B3/00; F03B3/16; F03B3/18; F03B3/183; Y; Y02; Y02E; Y02E10/00; Y02E10/20; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87265; Y10T137/8741; Y10T137/87442; Y10T137/8745; Y10T137/87467
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN COMBINATION WITH A HYDRAULIC MACHINE INCLUDING A PLURALITY OF WICKET GATES HAVING TRUNNIONS PIVOTALLY SUPPORTED IN SAID PLATES LOCATED ADJACENT TO OPPOSITE ENDS OF SAID GATES, MEANS PROVIDING A LIQUID SEAL BETWEEN SAID SIDE PLATES AND SAID GATE ENDS COMPRISING: A PLURALITY OF ELONGATED ARCUATE GROOVES IN THE SURFACE OF SAID SIDE PLATES IN ALIGNMENT WITH AND FACING SAID VANE ENDS WHEN SAID VANES ARE IN CLOSED POSITION SAID ARCUATE GROOVES EXTENDING ONLY BETWEEN ADJACENT WICKET GATE TRUNNIONS; A FIRST RESILIENT SEAL PORTION CONTAINED IN THE BOTTOM OF EACH GROOVE; A SECOND METALLIC SEAL PORTION CONTAINED IN EACH GROOVE BETWEEN SAID RESILIENT PORTION AND SAID GATE ENDS, SAID RESILIENT PORTION URGING SAID METALLIC PORTION INTO LIQUID SEALING ENGAGEMENT WITH THE ENDS OF SAID GATES WHEN SAID GATES ARE IN CLOSED POSITION, THE OPPOSSITE END
Claim 2
Dependent Claim
135 words
IN COMBINATION WITH A HYDRAULIC MACHINE INCLUDING A PLURALITY OF WICKET GATES HAVING TRUNNIONS PIVOTALLY SUPPORTED IN SAID PLATES LOCATED ADJACENT TO OPPOSITE ENDS OF SAID GATES, MEANS PROVIDING A LIQUID SEAL BETWEEN SAID SIDE PLATES AND SAID GATE ENDS COMPRISING: A PLURALITY OF ELONGATED ARCUATE GROOVES IN THE SURFACE OF SAID SIDE PLATES IN ALIGNMENT WITH AND FACING SAID VANE ENDS WHEN SAID VANES ARE IN CLOSED POSITION SAID ARCUATE GROOVES EXTENDING ONLY BETWEEN ADJACENT WICKET GATE TRUNNIONS; A FIRST RESILIENT SEAL PORTION CONTAINED IN THE BOTTOM OF EACH GROOVE; A SECOND METALLIC SEAL PORTION CONTAINED IN EACH GROOVE BETWEEN SAID RESILIENT PORTION AND SAID GATE ENDS, SAID RESILIENT PORTION URGING SAID METALLIC PORTION INTO LIQUID SEALING ENGAGEMENT WITH THE ENDS OF SAID GATES WHEN SAID GATES ARE IN CLOSED POSITION, THE OPPOSSITE END
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) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |