Patent US2734824A successfully refreshed from Google Patents.
US2734824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure vessels
Assignee: —
•
Filing: —
•
Granted: 1956-02-14
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Expires: 1973-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:14
CPC Classifications
B; B01; B01J; B01J3/00; B01J3/03; D; D21; D21C; D21C7/00; D21C7/08; F; F16; F16J; F16J13/00; F16J13/02; F16J13/12; F16J13/16; F16J13/20; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1075; Y10T292/1082; Y10T292/20; Y10T292/221; Y10T292/223
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A CLOSURE FOR TANKS COMPRISING A CLOSURE MEMBER HAVING A PLURALITY OF RADIAL SLOTS ABOUT THE EDGE THEREOF, MEANS INCLUDING CLOSURE CARRYING MEMBERS AND TRUNNIONS FOR PIVOTALLY MOVING SAID CLOSURE MEMBER INTO AND OUT OF A CLOSED POSITION ON SAID TANK, A PLURALITY OF CLAMPING BOLTS PIVOTALLY CARRIED BY SAID TANK AND ADAPTED TO ENGAGE THE SLOTS IN SAID CLOSURE MEMBER WHEN THE LATTER IS IN THE CLOSED POSITION, A LOCKING RING ROTATABLY SUPPORTED BY SAID TANK AND MOVABLE IN ONE DIRECTION TO ENGAGE SAID BOLTS TO HOLD THEM IN ENGAGEMENT WITH THE CLOSURE MEMBER AND MOVABLE IN ANOTHER DIRECTION TO DISENGAGE SAID BOLTS AND MEANS FOR MOVING SAID BOLTS OUT OF ENGAGEMENT WITH SAID CLOSURE MEMBER.
Claim 2
Dependent Claim
117 words
A CLOSURE FOR TANKS COMPRISING A CLOSURE MEMBER HAVING A PLURALITY OF RADIAL SLOTS ABOUT THE EDGE THEREOF, MEANS INCLUDING CLOSURE CARRYING MEMBERS AND TRUNNIONS FOR PIVOTALLY MOVING SAID CLOSURE MEMBER INTO AND OUT OF A CLOSED POSITION ON SAID TANK, A PLURALITY OF CLAMPING BOLTS PIVOTALLY CARRIED BY SAID TANK AND ADAPTED TO ENGAGE THE SLOTS IN SAID CLOSURE MEMBER WHEN THE LATTER IS IN THE CLOSED POSITION, A LOCKING RING ROTATABLY SUPPORTED BY SAID TANK AND MOVABLE IN ONE DIRECTION TO ENGAGE SAID BOLTS TO HOLD THEM IN ENGAGEMENT WITH THE CLOSURE MEMBER AND MOVABLE IN ANOTHER DIRECTION TO DISENGAGE SAID BOLTS AND MEANS FOR MOVING SAID BOLTS OUT OF ENGAGEMENT WITH SAID CLOSURE MEMBER.
References Cited (Backward Citations)
US784644A
Cited
US1051530A
Cited
US1625373A
Cited
US2086266A
Cited
US2160062A
Cited
US2539990A
Cited
US2627221A
Cited
US2680684A
Cited
DK45196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-13 | 1959-08-15 | 1960-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-13 | 1963-08-15 | 1964-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-13 | 1967-08-15 | 1968-02-14 | $7700.00 | Window Closed / Lapsed |