US3131925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digester cap assembly with sliding cap
Assignee: Individual
•
Filing: 1961-11-27
•
Granted: 1964-05-05
•
Expires: 1981-11-27
Abstract
No abstract record available.
Inventors
- 👤 John N Coats
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:59
CPC Classifications
B; B01; B01J; B01J3/00; B01J3/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
A CLOSURE ASSEMBLY FOR THE MOUTH OF A PRESSURE VESSEL, COMPRISING A PAIR OF PARALLEL SPACED STRAIGHT GUIDES LOCATED ONE ON EITHER SIDE OF SAID MOUTH WITH THE AXIS OF SAID MOUTH BEING LOCATED WITHIN THE LONGITUDINAL CONFINES OF SAID GUIDES AND PERPENDICULAR TO THE PLANE OF SAID GUIDES, A PAIR OF SLIDES, ONE FOR EACH OF SAID GUIDES AND SLIDABLE ALONG SAID GUIDES, A COVER FOR SAID SEAT, MEANS MOUNTING SAID COVER ON SAID SLIDES WITH THE AXIS OF SAID COVER PARALLEL TO THE AXIS OF SAID VESSEL MOUTH, SAID MOUNTING MEANS SUPPORTING SAID COVER FOR MOVEMENT IN A DIRECTION PARALLEL TO ITS AXIS TO EFFECT SEATING OF SAID COVER ON SAID MOUTH, SAID MOUNTING MEANS INCLUDING A PAIR OF LEVERS, ONE FOR EACH SLIDE, EACH LEVER BEING CONNECTED TO ITS SLIDE FOR PIVOTAL MOVEMENT ABOUT AN AXIS PARALLEL TO SAID GUIDES, SAID LEVERS ALSO BEING PIVOTALLY CONNECTED TO SAID COVER, AND MEANS INTERCONNECTING SAID LEVERS TO EFFECT MOVEMENT OF SAID LEVERS RELATIVE TO ONE ANOTHER TO CAUSE SEATING AND UNSEATING OF SAID COVER.
Claim 2
Dependent Claim
175 words
A CLOSURE ASSEMBLY FOR THE MOUTH OF A PRESSURE VESSEL, COMPRISING A PAIR OF PARALLEL SPACED STRAIGHT GUIDES LOCATED ONE ON EITHER SIDE OF SAID MOUTH WITH THE AXIS OF SAID MOUTH BEING LOCATED WITHIN THE LONGITUDINAL CONFINES OF SAID GUIDES AND PERPENDICULAR TO THE PLANE OF SAID GUIDES, A PAIR OF SLIDES, ONE FOR EACH OF SAID GUIDES AND SLIDABLE ALONG SAID GUIDES, A COVER FOR SAID SEAT, MEANS MOUNTING SAID COVER ON SAID SLIDES WITH THE AXIS OF SAID COVER PARALLEL TO THE AXIS OF SAID VESSEL MOUTH, SAID MOUNTING MEANS SUPPORTING SAID COVER FOR MOVEMENT IN A DIRECTION PARALLEL TO ITS AXIS TO EFFECT SEATING OF SAID COVER ON SAID MOUTH, SAID MOUNTING MEANS INCLUDING A PAIR OF LEVERS, ONE FOR EACH SLIDE, EACH LEVER BEING CONNECTED TO ITS SLIDE FOR PIVOTAL MOVEMENT ABOUT AN AXIS PARALLEL TO SAID GUIDES, SAID LEVERS ALSO BEING PIVOTALLY CONNECTED TO SAID COVER, AND MEANS INTERCONNECTING SAID LEVERS TO EFFECT MOVEMENT OF SAID LEVERS RELATIVE TO ONE ANOTHER TO CAUSE SEATING AND UNSEATING OF SAID COVER.
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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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |