Cooling fans for liquid-cooled internal combustion engines
Abstract
Abstract A hollow drive spindle fast with a pulley is drivingly connected to a pump impeller, and a fan assembly is mounted for rotation with respect to said pulley and said drive spindle. Friction clutch means comprising clutch plates respectively drivingly connected to the fan assembly and to the pulley is provided with a pressure plate operable to frictionally engage said clutch plates and thereby drivingly connect the pulley and the fan assemply. A wax cell thermostat is mounted in the pump impeller for exposure to coolant fluid, and a rod slidably received in said hollow drive spindle is axially moved therein by expansion and contraction of the thermostat. A part fast with said pulley has a diametral bore, and a diametrally extending member is loosely received in said bore and is engageable with said pressure plate. Said rod is engageable with said member, in response to expansion of said thermostat, to displace said member axially and thereby displace the pressure plate to operate the clutch means.
Inventors
- 👤 R Walter
- 👤 W Pitcher
Bibliographic Details
Claims Analysis
Total Claims: 3References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |