Patent US3103946A successfully refreshed from Google Patents.
US3103946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for prevention of pipe freezing
Assignee: Individual
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Filing: 1959-12-14
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Granted: 1963-09-17
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Expires: 1979-12-14
Abstract
No abstract record available.
Inventors
- 👤 Troxell Monte Evan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:47
CPC Classifications
E; E03; E03B; E03B7/00; E03B7/09; E03B7/14; F; F16; F16L; F16L53/00; F16L53/30; F16L53/32; Y; Y10; Y10T; Y10T137/00; Y10T137/6416; Y10T137/6497; Y10T137/8593; Y10T137/85954; Y10T137/86493; Y10T137/86815; Y10T137/86879; Y10T137/86895
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
APPARATUS FOR PREVENTING THE FREEZING OF A FLUID WITHIN A FLUID SYSTEM COMPRISING: A SUPPLY CONDUIT HAVING ONE OF ITS ENDS IN COMMUNICATION WITH A FLUID SOURCE AND HAVING AT LEAST ONE OUTLET; A FLOW CONTROL VALVE CONNECTED TO SAID OUTLET; A SECOND CONDUIT DISPOSED IN HEAT EXCHANGE RELATIONSHIP AND WITHIN A PORTION OF SAID SUPPLY CONDUIT, ONE END OF SECOND CONDUIT IN COMMUNICATION WITH A SOURCE OF HEATED FLUID AND THE OTHER OF ITS ENDS IN COMMUNICATION WITH SAID SUPPLY CONDUIT AND SAID VALVE UPSTREAM FROM SAID VALVE; MEANS TO SELECTIVELY PUMP HEATED FLUID THROUGH SAID SECOND CONDUIT, THE FLUID IN SAID SUPPLY CONDUIT AND SAID SECOND CONDUIT PASSING OUTWARDLY THROUGH SAID VALVE WHEN IT IS OPENED, AND THE HEATED FLUID PASSING THROUGH SAID SECOND CONDUIT AND THEN THROUGH SAID SUPPLY CONDUIT TOWARD SAID FLUID SOURCE WHEN SAID VALVE IS CLOSED WHEN SAID HEATED FLUID IS BEING PUMPED, SAID VALVE HAVING MEANS ALLOWING MORE FLUID IN SAID SUPPLY CONDUIT THAN IN SAID SECOND CONDUIT TO PASS THERETHROUGH.
Claim 2
Dependent Claim
168 words
APPARATUS FOR PREVENTING THE FREEZING OF A FLUID WITHIN A FLUID SYSTEM COMPRISING: A SUPPLY CONDUIT HAVING ONE OF ITS ENDS IN COMMUNICATION WITH A FLUID SOURCE AND HAVING AT LEAST ONE OUTLET; A FLOW CONTROL VALVE CONNECTED TO SAID OUTLET; A SECOND CONDUIT DISPOSED IN HEAT EXCHANGE RELATIONSHIP AND WITHIN A PORTION OF SAID SUPPLY CONDUIT, ONE END OF SECOND CONDUIT IN COMMUNICATION WITH A SOURCE OF HEATED FLUID AND THE OTHER OF ITS ENDS IN COMMUNICATION WITH SAID SUPPLY CONDUIT AND SAID VALVE UPSTREAM FROM SAID VALVE; MEANS TO SELECTIVELY PUMP HEATED FLUID THROUGH SAID SECOND CONDUIT, THE FLUID IN SAID SUPPLY CONDUIT AND SAID SECOND CONDUIT PASSING OUTWARDLY THROUGH SAID VALVE WHEN IT IS OPENED, AND THE HEATED FLUID PASSING THROUGH SAID SECOND CONDUIT AND THEN THROUGH SAID SUPPLY CONDUIT TOWARD SAID FLUID SOURCE WHEN SAID VALVE IS CLOSED WHEN SAID HEATED FLUID IS BEING PUMPED, SAID VALVE HAVING MEANS ALLOWING MORE FLUID IN SAID SUPPLY CONDUIT THAN IN SAID SECOND CONDUIT TO PASS THERETHROUGH.
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) | 1966-09-16 | 1967-03-18 | 1967-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-16 | 1971-03-18 | 1971-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-16 | 1975-03-18 | 1975-09-17 | $7700.00 | Window Closed / Lapsed |