US3256905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single and multiple rate-of-flow control valves
Assignee: Griswold Controls LLC
•
Filing: 1962-12-19
•
Granted: 1966-06-21
•
Expires: 1982-12-19
Abstract
No abstract record available.
Inventors
- 👤 David E Griswold
- 👤 James L Wingert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:26
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/02; F16L55/027; Y; Y10; Y10T; Y10T137/00; Y10T137/7504; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7839; Y10T137/7854; Y10T137/7869
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A LIQUID FLOW CONTROL DEVICE, COMPRISING: A HOLLOW CYLINDRICAL HOUSING HAVING AN INLET CHAMBER, AN OUTLET CHAMBER AND A TRANSVERSE WALL SEPARATING SAID CHAMBERS SAID TRANSVERSE WALL HAVING A PLURALITY OF OPENINGS; AND REINFORCING WEBS IN SAID OUTLET CHAMBER CONNECTED WITH SAID TRANSVERSE WALL AT POINTS BETWEEN SAID OPENINGS; A RATE OF FLOW CONTROL INSERT MOUNTED IN EACH OF SAID OPENINGS, EACH OF SAID INSERTS COMPRISING A GENERALLY CYLINDRICAL CASING HAVING A MOUNTING SHOULDER ENGAGED WITH SAID TRANSVERSE WALL ON THE INLET SIDE THEREOF, SAID CASING HAVING MEANS THEREIN FOR CONTROLLING THE RATE OF FLOW BETWEEN SAID HOUSING INLET AND OUTLET CHAMBERS; AND MEANS FASTENED TO SAID TRANSVERSE WALL AND ENGAGED WITH SAID MOUNTING SHOULDER SECURING SAID INSERTS TO SAID WALL.
Claim 2
Dependent Claim
121 words
A LIQUID FLOW CONTROL DEVICE, COMPRISING: A HOLLOW CYLINDRICAL HOUSING HAVING AN INLET CHAMBER, AN OUTLET CHAMBER AND A TRANSVERSE WALL SEPARATING SAID CHAMBERS SAID TRANSVERSE WALL HAVING A PLURALITY OF OPENINGS; AND REINFORCING WEBS IN SAID OUTLET CHAMBER CONNECTED WITH SAID TRANSVERSE WALL AT POINTS BETWEEN SAID OPENINGS; A RATE OF FLOW CONTROL INSERT MOUNTED IN EACH OF SAID OPENINGS, EACH OF SAID INSERTS COMPRISING A GENERALLY CYLINDRICAL CASING HAVING A MOUNTING SHOULDER ENGAGED WITH SAID TRANSVERSE WALL ON THE INLET SIDE THEREOF, SAID CASING HAVING MEANS THEREIN FOR CONTROLLING THE RATE OF FLOW BETWEEN SAID HOUSING INLET AND OUTLET CHAMBERS; AND MEANS FASTENED TO SAID TRANSVERSE WALL AND ENGAGED WITH SAID MOUNTING SHOULDER SECURING SAID INSERTS TO SAID WALL.
References Cited (Backward Citations)
US528360A
Cited
US788985A
Cited
US920716A
Cited
US1235558A
Cited
US1343753A
Cited
US2348097A
Cited
US2826216A
Cited
US2744727A
Cited
US2804086A
Cited
US2941401A
Cited
US2884002A
Cited
US3000390A
Cited
US3103119A
Cited
FR1237863A
Cited
US3104679A
Cited
US3131716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |