US3415276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid control system
Assignee: Whirlpool Corp
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Filing: 1966-12-16
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Granted: 1968-12-10
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Expires: 1986-12-16
Abstract
No abstract record available.
Inventors
- 👤 Wallace E Lind
- 👤 Wynn G Winkler
- 👤 Wilbur G Peyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:04
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/42; A47L15/4214; A47L15/4225; G; G05; G05D; G05D7/00; G05D7/005; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85954
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A FLUID CONTROL SYSTEM COMPRISING: MEANS FOR RECEIVING A FLUID; MEANS DEFINING AN INLET PASSAGE FOR CONDUCTING FLUID UNDER PRESSURE FROM A SOURCE TO SAID RECEIVING MEANS; MEANS DEFINING A DISCHARGE PASSAGE FOR CONDUCTING THE FLUID FROM SAID RECEIVING MEANS; FIRST VALVE MEANS FOR CLOSING SAID INLET PASSAGE AT A FIRST POINT THEREOF; SECOND VALVE MEANS FOR CLOSING SAID INLET PASSAGE AT A SECOND POINT THEREOF SPACED DOWNSTREAM FROM SAID FIRST POINT; PRESSURE CONTROL MEANS MAINTAINING FLUID PRESSURE IN THE PORTION OF SAID INLET PASSAGE BETWEEN SAID VALVES WHEN EACH OF SAID VALVES IS OPEN TO PERMIT FLOW OF THE FLUID THROUGH SAID INLET PASSAGE TO SAID RECEIVING MEANS; AND MEANS RESPONSIVE TO PRESSURE OF THE FLUID IN SAID INLET PASSAGE PORTION FOR CLOSING SAID DISCHARGE PASSAGE WHEN SAID FIRST VALVE IS OPEN AND SAID SECOND VALVE IS CLOSED AND WHEN SAID FIRST AND SECOND VALVES ARE CONCURRENTLY OPEN.
Claim 2
Dependent Claim
149 words
A FLUID CONTROL SYSTEM COMPRISING: MEANS FOR RECEIVING A FLUID; MEANS DEFINING AN INLET PASSAGE FOR CONDUCTING FLUID UNDER PRESSURE FROM A SOURCE TO SAID RECEIVING MEANS; MEANS DEFINING A DISCHARGE PASSAGE FOR CONDUCTING THE FLUID FROM SAID RECEIVING MEANS; FIRST VALVE MEANS FOR CLOSING SAID INLET PASSAGE AT A FIRST POINT THEREOF; SECOND VALVE MEANS FOR CLOSING SAID INLET PASSAGE AT A SECOND POINT THEREOF SPACED DOWNSTREAM FROM SAID FIRST POINT; PRESSURE CONTROL MEANS MAINTAINING FLUID PRESSURE IN THE PORTION OF SAID INLET PASSAGE BETWEEN SAID VALVES WHEN EACH OF SAID VALVES IS OPEN TO PERMIT FLOW OF THE FLUID THROUGH SAID INLET PASSAGE TO SAID RECEIVING MEANS; AND MEANS RESPONSIVE TO PRESSURE OF THE FLUID IN SAID INLET PASSAGE PORTION FOR CLOSING SAID DISCHARGE PASSAGE WHEN SAID FIRST VALVE IS OPEN AND SAID SECOND VALVE IS CLOSED AND WHEN SAID FIRST AND SECOND VALVES ARE CONCURRENTLY OPEN.
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) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |