US3295822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blind valve cage and method of making same
Assignee: Delaware Capital Formation Inc
•
Filing: 1963-12-16
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Granted: 1967-01-03
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Expires: 1983-12-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Walter A O'bannon
- 👤 Jr William R Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:47
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/02; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7908; Y10T137/7909; Y10T137/791; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49416; Y10T29/49419
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
A UNIBODY CLOSED VALVE CAGE COMPRISING A LOWER VALVE BALL RECEIVING PORTION HAVING A BORE EXTENDING AXIALLY THERETHROUGH; AN UPPER PORTION HAVING AT LEAST ONE FLOW PASSAGE EXTENDING THERETHROUGH, SAID FLOW PASSAGE BEING SMALLER IN DIAMETER THAN AND COMMUNICATING AT ITS LOWER END WITH THE UPPER END OF SAID BORE THROUGH SAID LOWER PORTION; AT LEAST ONE LONGITUDINALLY EXTENDING GROOVE OPEN TO SAID BORE AND PROVIDED IN THE INTERIORLY EXPOSED SURFACE OF SAID LOWER PORTION, TERMINATING UPWARDLY AT THE POINT OF JUNCTURE OF SAID BORE THROUGH SAID LOWER PORTION AND SAID BORE THROUGH SAID UPPER PORTION, AND TERMINATING DOWNWARDLY IN AN INTERNAL ANNULAR SHOULDER FOR RECEIVING THEREAGAINST A BALL VALVE SEAT, THE AXIS OF SAID GROOVE IN SAID LOWER PORTION INCLINING UPWARDLY AND OUTWARDLY WITH RESPECT TO THE AXIS OF SAID BORE THROUGH SAID LOWER PORTION; AT LEAST ONE LONGITUDINALLY EXTENDING VALVE BALL GUIDE SURFACE PROVIDED INTERIORLY OF SAID LOWER PORTION; A DOWNWARDLY PRESENTED VALVE BALL STOP MEANS PROVIDED AT THE JUNCTURE OF SAID FLOW PASSAGE AND SAID BORE THROUGH SAID LOWER PORTION.
Claim 2
Dependent Claim
173 words
A UNIBODY CLOSED VALVE CAGE COMPRISING A LOWER VALVE BALL RECEIVING PORTION HAVING A BORE EXTENDING AXIALLY THERETHROUGH; AN UPPER PORTION HAVING AT LEAST ONE FLOW PASSAGE EXTENDING THERETHROUGH, SAID FLOW PASSAGE BEING SMALLER IN DIAMETER THAN AND COMMUNICATING AT ITS LOWER END WITH THE UPPER END OF SAID BORE THROUGH SAID LOWER PORTION; AT LEAST ONE LONGITUDINALLY EXTENDING GROOVE OPEN TO SAID BORE AND PROVIDED IN THE INTERIORLY EXPOSED SURFACE OF SAID LOWER PORTION, TERMINATING UPWARDLY AT THE POINT OF JUNCTURE OF SAID BORE THROUGH SAID LOWER PORTION AND SAID BORE THROUGH SAID UPPER PORTION, AND TERMINATING DOWNWARDLY IN AN INTERNAL ANNULAR SHOULDER FOR RECEIVING THEREAGAINST A BALL VALVE SEAT, THE AXIS OF SAID GROOVE IN SAID LOWER PORTION INCLINING UPWARDLY AND OUTWARDLY WITH RESPECT TO THE AXIS OF SAID BORE THROUGH SAID LOWER PORTION; AT LEAST ONE LONGITUDINALLY EXTENDING VALVE BALL GUIDE SURFACE PROVIDED INTERIORLY OF SAID LOWER PORTION; A DOWNWARDLY PRESENTED VALVE BALL STOP MEANS PROVIDED AT THE JUNCTURE OF SAID FLOW PASSAGE AND SAID BORE THROUGH SAID LOWER PORTION.
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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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |