US3217697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatically controlled valve
Assignee: Mahle Behr GmbH and Co KG
•
Filing: 1964-07-27
•
Granted: 1965-11-16
•
Expires: 1984-07-27
Abstract
No abstract record available.
Inventors
- 👤 Mayr Otmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:17
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/14; F01P7/16; F01P7/02; F01P7/04; F01P7/044; G; G05; G05D; G05D23/00; G05D23/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
THERMOSTATICALLY REGULATED CONTROL VALVE MEANS ADAPTED TO REGULATE THE ACTUATING MEDIUM OF A HYDRAULIC MOTOR AS DETERMINED BY THE COOLANT OF AN INTERNAL COMBUSTION ENGINE OR THE LIKE HAVING A LIQUID COOLING SYSTEM OF THE TYPE COMPRISING A HYDRAULIC PUMP OPERATIVELY CONNECTED TO THE ENGINE, A HYDRAULIC MOTOR, SAID VALVE, AND FLUID CONDUITS CONNECTING SAID PUMP, SAID HYDRAULIC MOTOR AND SAID VALVE, AND SAID VALVE HAVING A HOUSING, A HYDRAULIC FLUID PATH IN SAID HOUSING, A FLUID INTAKE AND OUTLET OPENING, A SPRING BIASED MAIN VALVE ELEMENT IN SAID PATH INTERMEDIATE SAID INLET AND SAID OUTLET OPENING, A PILOT VALVE PORTION INCLUDING A THERMOSTATIC ELEMENT CONNECTED IN THE LIQUID COOLING SYSTEM OF THE ENGINE AND A PILOT VALVE ELEMENT DISPOSED IN AXIAL ALIGNMENT WITH SAID MAIN VALVE ELEMENT.
Claim 2
Dependent Claim
128 words
THERMOSTATICALLY REGULATED CONTROL VALVE MEANS ADAPTED TO REGULATE THE ACTUATING MEDIUM OF A HYDRAULIC MOTOR AS DETERMINED BY THE COOLANT OF AN INTERNAL COMBUSTION ENGINE OR THE LIKE HAVING A LIQUID COOLING SYSTEM OF THE TYPE COMPRISING A HYDRAULIC PUMP OPERATIVELY CONNECTED TO THE ENGINE, A HYDRAULIC MOTOR, SAID VALVE, AND FLUID CONDUITS CONNECTING SAID PUMP, SAID HYDRAULIC MOTOR AND SAID VALVE, AND SAID VALVE HAVING A HOUSING, A HYDRAULIC FLUID PATH IN SAID HOUSING, A FLUID INTAKE AND OUTLET OPENING, A SPRING BIASED MAIN VALVE ELEMENT IN SAID PATH INTERMEDIATE SAID INLET AND SAID OUTLET OPENING, A PILOT VALVE PORTION INCLUDING A THERMOSTATIC ELEMENT CONNECTED IN THE LIQUID COOLING SYSTEM OF THE ENGINE AND A PILOT VALVE ELEMENT DISPOSED IN AXIAL ALIGNMENT WITH SAID MAIN VALVE ELEMENT.
References Cited (Backward Citations)
US1256709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |