Apparatus for reducing engine fan noise
US5899176A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1998 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Feb 6, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B67/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus has first and second driven pulleys for powering an engine auxiliary function, e.g., a water pump, and for driving an engine fan, respectively. The apparatus includes a hollow tube-like arbor fixed with respect to the first pulley and having a first arbor surface, e.g., an exterior cylindrical surface. A bearing has a first load-supporting surface, e.g., the interior surface of the bearing, which is mounted to the first arbor surface. A fan drive member is mounted to the second load-supporting surface of the bearing, e.g., the exterior bearing surface, and both the fan and the second pulley are coupled to the fan drive member. The two pulleys are driven by respective belts powered by the engine crankshaft and the pulleys rotate in opposite directions when driven. A new engine incorporating the apparatus is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.