US2989453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure system control
Assignee: Individual
•
Filing: 1957-06-12
•
Granted: 1961-06-20
•
Expires: 1977-06-12
Abstract
No abstract record available.
Inventors
- 👤 Walter H Esselman
- 👤 George M Kaplan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:08
CPC Classifications
G; G21; G21D; G21D3/00; G21D3/08; G21D3/10; G21C; G21C1/00; G21C1/04; G21C1/06; G21C1/08; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A METHOD OF CONTROLLING THE PRESSURE IN THE PRIMARY COOLANT SYSTEM OF A NUCLEAR POWER REACTOR HAVING A FLUID COOLANT UNDER SUPER-ATMOSPHERIC PRESSURE FLOWING IN A CLOSED PRIMARY COOLANT LOOP FROM A REACTOR HEATING ZONE THROUGH A HOT PORTION OF SAID LOOP TO A PRIMARY COOLANT COOLING ZONE, THEN TO THE REACTOR HEATING ZONE THROUGH A COLD PORTION OF SAID LOOP, WHICH COMPRISES TAPPING OFF A CONTROL PORTION OF SAID COOLANT FLOW FROM SAID HOT PORTION OF SAID LOOP AND TRANSPORTING SAID PORTION OF THE COOLANT TO A STORAGE ZONE WHILE RESTRICTING THE FLOW THEREOF, AND TRANSPORTING SAID PORTION OF THE COOLANT FROM THE STORAGE ZONE TO THE COLD PORTION OF SAID LOOP AND VARYING THE FLOW RATE OF THE CONTROL PORTION FROM THE STORAGE ZONE TO THE COLD PORTION OF THE SAID LOOP IN RESPONSE TO A PRESSURE-TEMPERATURE VARIABLE OF THE COOLANT IN THE PRIMARY LOOP.
Claim 2
Independent Claim
147 words
A METHOD OF CONTROLLING THE PRESSURE IN THE PRIMARY COOLANT SYSTEM OF A NUCLEAR POWER REACTOR HAVING A FLUID COOLANT UNDER SUPER-ATMOSPHERIC PRESSURE FLOWING IN A CLOSED PRIMARY COOLANT LOOP FROM A REACTOR HEATING ZONE THROUGH A HOT PORTION OF SAID LOOP TO A PRIMARY COOLANT COOLING ZONE, THEN TO THE REACTOR HEATING ZONE THROUGH A COLD PORTION OF SAID LOOP, WHICH COMPRISES TAPPING OFF A CONTROL PORTION OF SAID COOLANT FLOW FROM SAID HOT PORTION OF SAID LOOP AND TRANSPORTING SAID PORTION OF THE COOLANT TO A STORAGE ZONE WHILE RESTRICTING THE FLOW THEREOF, AND TRANSPORTING SAID PORTION OF THE COOLANT FROM THE STORAGE ZONE TO THE COLD PORTION OF SAID LOOP AND VARYING THE FLOW RATE OF THE CONTROL PORTION FROM THE STORAGE ZONE TO THE COLD PORTION OF THE SAID LOOP IN RESPONSE TO A PRESSURE-TEMPERATURE VARIABLE OF THE COOLANT IN THE PRIMARY LOOP.
References Cited (Backward Citations)
US2816068A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-06-19 | 1964-12-19 | 1965-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-06-19 | 1968-12-19 | 1969-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-06-19 | 1972-12-19 | 1973-06-20 | $7700.00 | Window Closed / Lapsed |