Patent US3353554A successfully refreshed from Google Patents.
US3353554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid control valves
Assignee: DRALLIM INDUSTRIES Ltd
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Filing: 1965-09-15
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Granted: 1967-11-21
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Expires: 1985-09-15
Abstract
No abstract record available.
Inventors
- 👤 Basil A Ludkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:32
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/10; F16K11/14; F16K11/16; F16K11/163; F16K11/166; F16K31/00; F16K31/44; F16K31/52; F16K31/524; F16K31/52475; F16K31/52483; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87153; Y10T137/87161; Y10T137/877; Y10T137/87708; Y10T137/87748; Y10T137/87756
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A MULTIPLE PORT CONTROL VALVE HAVING (A) A MAIN BODY, (B) A VALVE STEM ROTATABLY SUPPORTED IN SAID BODY WITH A CYLINDRICAL ANNULAR CHAMBER AROUND SAIS STEM, (C) A PLURALITY OF VALVE CONNECTION ASSEMBLIES RADIALLY DISPOSED IN SAID BODY WITH THEIR AXES PERPENDICULAR TO SAID VALVE STEM, ONE OF SAID ASSEMBLIES HAVING (1) A FIXED CYLINDRICAL SLEEVE WITH AN INWARD FLANGE AND A BEVELLED SEAT AT THE INNER END, (2) AN AXIALLY MOVABLE SLEEVE MOUNTED INSIDE SAID CYLINDRICAL SLEEVE HAVING AN EXTERNAL ANNULAR FLANGE, AN INNER CLOSED END WITH AN ANNULAR GROOVE, AROUND IT, AN ANNULAR PORT CONNECTING THE INSIDE OF SAID MOVABLE SLEEVE AND THE ANNULAR CHAMBER AT A POINT ADJACENT SAID INNER END, (3) A RESILIENT SEAL SUPPORTED IN SAID GROOVE, (4) A SPRING MEMBER REACTING AGAINST THE FLANGE OF SAID MOVABLE SLEEVE TO URGE THE EXTERNAL ANNULAR FLANGE TOWARD THE INWARD FLANGE OF SAID FIXED SLEEVE,
Claim 2
Dependent Claim
149 words
A MULTIPLE PORT CONTROL VALVE HAVING (A) A MAIN BODY, (B) A VALVE STEM ROTATABLY SUPPORTED IN SAID BODY WITH A CYLINDRICAL ANNULAR CHAMBER AROUND SAIS STEM, (C) A PLURALITY OF VALVE CONNECTION ASSEMBLIES RADIALLY DISPOSED IN SAID BODY WITH THEIR AXES PERPENDICULAR TO SAID VALVE STEM, ONE OF SAID ASSEMBLIES HAVING (1) A FIXED CYLINDRICAL SLEEVE WITH AN INWARD FLANGE AND A BEVELLED SEAT AT THE INNER END, (2) AN AXIALLY MOVABLE SLEEVE MOUNTED INSIDE SAID CYLINDRICAL SLEEVE HAVING AN EXTERNAL ANNULAR FLANGE, AN INNER CLOSED END WITH AN ANNULAR GROOVE, AROUND IT, AN ANNULAR PORT CONNECTING THE INSIDE OF SAID MOVABLE SLEEVE AND THE ANNULAR CHAMBER AT A POINT ADJACENT SAID INNER END, (3) A RESILIENT SEAL SUPPORTED IN SAID GROOVE, (4) A SPRING MEMBER REACTING AGAINST THE FLANGE OF SAID MOVABLE SLEEVE TO URGE THE EXTERNAL ANNULAR FLANGE TOWARD THE INWARD FLANGE OF SAID FIXED SLEEVE,
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) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |