US3243118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sediment filter for internal combustion engines
Assignee: Individual
•
Filing: 1963-11-22
•
Granted: 1966-03-29
•
Expires: 1983-11-22
Abstract
No abstract record available.
Inventors
- 👤 Walker Bruce Hartley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 08:45
CPC Classifications
F; F01; F01P; F01P11/00; F01P11/06; B; B01; B01D; B01D35/00; B01D35/005; F01P2011/061
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
173 words
IN COMBINATION WITH THE ENGINE BLOCK OF A WATERCOOLED ENGINE HAVING A WATER PUMP FOR CIRCULATING THE WATER IN THE ENGINE BLOCK IN A CONTINUOUS CIRCUIT THROUGH A RADIATOR AND FOR RETURNING WATER IN THE RADIATION TO SAID ENGINE BLOCK; A HEATER SEPARATE FROM THE ENGINE BLOCK AND CONNECTED BY AN INLET TUBE IN SAID CONTINUOUS CIRCUIT TO THE ENGINE BLOCK, AND CONNECTED IN SAID CONTINUOUS CIRCUIT BY A RETURN TUBE TO THE ENGINE BLOCK, SAID PUMP THEREBY CIRCULATING THE WATER IN THE ENGINE BLOCK THROUGH SAID HEATER; A HEATER CONTROL VALVE IN SAID INLET TUBE ADJACENT SAID HEATER; A BY-PASS TUBE CONNECTING THE INLET AND RETURN TUBES IN ADVANCE OF THE CONTROL VALVE AND HEATER; A BY-PASS VALVE IN THE BY-PASS TUBE; AND A SEDIMENT FILTER TRAP IN SAID INLET TUBE IN ADVANCE OF THE BYPASS TUBE, WHEREBY WHEN THE HEATER VALVE IS CLOSED AND THE BY-PASS VALVE IS OPEN WHILE THE ENGINE IS IN OPERATION THE PORTION OF THE WATER CIRCULATED THROUGH THE TUBES AND RADIATOR WILL PASS THROUGH THE TRAP.
Claim 2
Dependent Claim
173 words
IN COMBINATION WITH THE ENGINE BLOCK OF A WATERCOOLED ENGINE HAVING A WATER PUMP FOR CIRCULATING THE WATER IN THE ENGINE BLOCK IN A CONTINUOUS CIRCUIT THROUGH A RADIATOR AND FOR RETURNING WATER IN THE RADIATION TO SAID ENGINE BLOCK; A HEATER SEPARATE FROM THE ENGINE BLOCK AND CONNECTED BY AN INLET TUBE IN SAID CONTINUOUS CIRCUIT TO THE ENGINE BLOCK, AND CONNECTED IN SAID CONTINUOUS CIRCUIT BY A RETURN TUBE TO THE ENGINE BLOCK, SAID PUMP THEREBY CIRCULATING THE WATER IN THE ENGINE BLOCK THROUGH SAID HEATER; A HEATER CONTROL VALVE IN SAID INLET TUBE ADJACENT SAID HEATER; A BY-PASS TUBE CONNECTING THE INLET AND RETURN TUBES IN ADVANCE OF THE CONTROL VALVE AND HEATER; A BY-PASS VALVE IN THE BY-PASS TUBE; AND A SEDIMENT FILTER TRAP IN SAID INLET TUBE IN ADVANCE OF THE BYPASS TUBE, WHEREBY WHEN THE HEATER VALVE IS CLOSED AND THE BY-PASS VALVE IS OPEN WHILE THE ENGINE IS IN OPERATION THE PORTION OF THE WATER CIRCULATED THROUGH THE TUBES AND RADIATOR WILL PASS THROUGH THE TRAP.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |