US3306569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow control device
Assignee: Grove Valve and Regulator Co
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Filing: 1964-09-08
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Granted: 1967-02-28
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Expires: 1984-09-08
Abstract
No abstract record available.
Inventors
- 👤 Austin U Bryant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:53
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/02; F16K7/04; F16K7/07; F16K7/075
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN AN EXPANSIBLE SLEEVE GAS FLOW VALVE COMPRISING: A HOUSING HAVING INLET AND OUTLET GAS FLOW PASSAGES, A CORE SLEEVE SECURED IN SAID HOUSING WITH OPPOSITE OPEN ENDS THEREOF ALIGNED WITH SAID FLOW PASSAGES, MEANS FORMING TWO AXIALLY SPACED SERIES OF INLET AND OUTLET THROUGH SLOTS AROUND SAID SLEEVE, A BARRIER ACROSS SAID SLEEVE INTERMEDIATE SAID SPACED SERIES OF SLOTS, A SEALING SURFACE AROUND SAID BARRIER, A RESILIENT, EXPANSIBLE SLEEVE ON SAID CORE SLEEVE HAVING AN INTERMEDIATE SEALING PORTION NORMALLY SNUGLY EMBRACING SAID SEALING SURFACE AND SEALED AROUND SAID CORE SLEEVE UPSTREAM AND DOWNSTREAM OF SAID INLET AND OUTLET SLOTS, RESPECTIVELY, FULL EXPANSION LIMITING SURFACE IN SAID HOUSING DISPLACED RADIALLY OUTWARD OF THE SEALING PORTION OF SAID RESILIENT SLEEVE TO FORM A CHAMBER AROUND SAID SEALING PORTION, AND CONDUIT MEANS FOR INTRODUCING A CONTROL PRESSURE GAS INTO SAID CHAMBER AROUND SAID EXPANSIBLE SLEEVE,
Claim 2
Dependent Claim
143 words
IN AN EXPANSIBLE SLEEVE GAS FLOW VALVE COMPRISING: A HOUSING HAVING INLET AND OUTLET GAS FLOW PASSAGES, A CORE SLEEVE SECURED IN SAID HOUSING WITH OPPOSITE OPEN ENDS THEREOF ALIGNED WITH SAID FLOW PASSAGES, MEANS FORMING TWO AXIALLY SPACED SERIES OF INLET AND OUTLET THROUGH SLOTS AROUND SAID SLEEVE, A BARRIER ACROSS SAID SLEEVE INTERMEDIATE SAID SPACED SERIES OF SLOTS, A SEALING SURFACE AROUND SAID BARRIER, A RESILIENT, EXPANSIBLE SLEEVE ON SAID CORE SLEEVE HAVING AN INTERMEDIATE SEALING PORTION NORMALLY SNUGLY EMBRACING SAID SEALING SURFACE AND SEALED AROUND SAID CORE SLEEVE UPSTREAM AND DOWNSTREAM OF SAID INLET AND OUTLET SLOTS, RESPECTIVELY, FULL EXPANSION LIMITING SURFACE IN SAID HOUSING DISPLACED RADIALLY OUTWARD OF THE SEALING PORTION OF SAID RESILIENT SLEEVE TO FORM A CHAMBER AROUND SAID SEALING PORTION, AND CONDUIT MEANS FOR INTRODUCING A CONTROL PRESSURE GAS INTO SAID CHAMBER AROUND SAID EXPANSIBLE SLEEVE,
References Cited (Backward Citations)
US2622620A
Cited
GB917423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |