US3224382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sliding gate sealing means assemblies
Assignee: UNITCAST CORP
•
Filing: 1960-02-12
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Granted: 1965-12-21
•
Expires: 1980-02-12
Abstract
No abstract record available.
Inventors
- 👤 Walter L Floehr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:46
CPC Classifications
B; B61; B61D; B61D7/00; B61D7/14; B61D7/16; B61D7/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
IN A SLIDE GATE ASSEMBLY FOR A HOPPER, THE COMBINATION OF A SINGLE SLIDE GATE SLIDABLE BETWEEN OPEN AND CLOSED POSITIONS IN A FRAME FIXED TO SAID HOPPER, MEANS CARRIED BY SAID SLIDE GATE AND OPERATIVE AFTER SAID GATE HAS REACHED CLOSED POSITION FOR DISPLACING SAID GATE RELATIVE TO SAID FRAME TOWARD AND INTO SEALING ENGAGEMENT WITH A SEAT ON SAID FRAME SURROUNDING A DISCHARGE OPENING OF SAID HOPPER.
Claim 2
Dependent Claim
69 words
IN A SLIDE GATE ASSEMBLY FOR A HOPPER, THE COMBINATION OF A SINGLE SLIDE GATE SLIDABLE BETWEEN OPEN AND CLOSED POSITIONS IN A FRAME FIXED TO SAID HOPPER, MEANS CARRIED BY SAID SLIDE GATE AND OPERATIVE AFTER SAID GATE HAS REACHED CLOSED POSITION FOR DISPLACING SAID GATE RELATIVE TO SAID FRAME TOWARD AND INTO SEALING ENGAGEMENT WITH A SEAT ON SAID FRAME SURROUNDING A DISCHARGE OPENING OF SAID HOPPER.
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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) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |