US3284860A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pouring trough for centrifugal casting machine
Assignee: United States Pipe and Foundry Co LLC
•
Filing: 1964-01-29
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Granted: 1966-11-15
•
Expires: 1984-01-29
Abstract
No abstract record available.
Inventors
- 👤 Gurak Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:30
CPC Classifications
B; B22; B22D; B22D13/00; B22D13/10; B22D13/107; Y; Y10; Y10T; Y10T137/00; Y10T137/9464
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A POURING TROUGH FOR A CENTRIFUGAL PIPE CASTING MACHINE COMPRISING AN ELONGAED OUTER CHANNEL HAVING A LONGITUDINAL OPENING AND AN INNER SURFACE WHICH IS GREATER THAN A SEMICIRCLE IN TRANSVERSE CROSS-SECTION, AND AN ELONGATED INNER CHANNEL HAVING A LONGITUDINAL OPENING AND AN OUTER SURFACE WHICH IS GREATER THAN A SEMICIRCLE IN TRAVERSE CROSS-SECTION, THE INNER CHANNEL BEING TELESCOPED WITHIN THE OUTER CHANNEL BEING TELEOPENING ALIGNED WITH THE LONGITUDINAL OPENING IN THE OUTER CHANNEL, A SLIDING CLEARANCE BEING PROVIDED BETWEEN
Claim 2
Dependent Claim
79 words
A POURING TROUGH FOR A CENTRIFUGAL PIPE CASTING MACHINE COMPRISING AN ELONGAED OUTER CHANNEL HAVING A LONGITUDINAL OPENING AND AN INNER SURFACE WHICH IS GREATER THAN A SEMICIRCLE IN TRANSVERSE CROSS-SECTION, AND AN ELONGATED INNER CHANNEL HAVING A LONGITUDINAL OPENING AND AN OUTER SURFACE WHICH IS GREATER THAN A SEMICIRCLE IN TRAVERSE CROSS-SECTION, THE INNER CHANNEL BEING TELESCOPED WITHIN THE OUTER CHANNEL BEING TELEOPENING ALIGNED WITH THE LONGITUDINAL OPENING IN THE OUTER CHANNEL, A SLIDING CLEARANCE BEING PROVIDED BETWEEN
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |