US3144040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butterfly valve
Assignee: Baldwin Lima Hamilton Corp
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Filing: 1958-02-11
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Granted: 1964-08-11
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Expires: 1978-02-11
Abstract
No abstract record available.
Inventors
- 👤 White Ira Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:05
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/22; F16K1/226; Y; Y10; Y10T; Y10T137/00; Y10T137/598; Y10T137/6031; Y10T137/6048; Y10T137/6052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A BUTTERFLY VALVE COMPRISING A CYLINDRICAL HOUSING HAVING A CONTINUOUS INTERIOR CIRCUMFERENTIAL GROOVE SUBSTANTIALLY RECTANGULAR IN AXIAL CROSS-SECTION, A MULTI-PART RETAINING RING IN SAID GROOVE, A DEFORMABLE PACKING RING IN SAID GROOVE ADJACENT SAID RETAINING RING, A MULTI-PART PRESSURE RING IN SAID GROOVE ADJACENT SAID PACKING RING, JACK SCREWS ENGAGING SAID PRESSURE RING AND ABUTTING ONE WALL OF SAID GROOVE, A SPLIT CLOSURE BAND OVERLYING SAID JACK SCREWS AND EXTENDING SUBSTANTIALLY FROM SAID WALL TO SAID PRESSURE RING, AND MEANS FOR EXPANDING SAID CLOSURE BAND INTO ENGAGEMENT WITH SAID HOUSING AND SAID PRESSURE RING.
Claim 2
Dependent Claim
94 words
A BUTTERFLY VALVE COMPRISING A CYLINDRICAL HOUSING HAVING A CONTINUOUS INTERIOR CIRCUMFERENTIAL GROOVE SUBSTANTIALLY RECTANGULAR IN AXIAL CROSS-SECTION, A MULTI-PART RETAINING RING IN SAID GROOVE, A DEFORMABLE PACKING RING IN SAID GROOVE ADJACENT SAID RETAINING RING, A MULTI-PART PRESSURE RING IN SAID GROOVE ADJACENT SAID PACKING RING, JACK SCREWS ENGAGING SAID PRESSURE RING AND ABUTTING ONE WALL OF SAID GROOVE, A SPLIT CLOSURE BAND OVERLYING SAID JACK SCREWS AND EXTENDING SUBSTANTIALLY FROM SAID WALL TO SAID PRESSURE RING, AND MEANS FOR EXPANDING SAID CLOSURE BAND INTO ENGAGEMENT WITH SAID HOUSING AND SAID PRESSURE RING.
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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |