Crankshaft with airflow inducing surfaces
US7021268B1 · kind B1 · utility
8Cited by
11References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 29, 2004 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | Oct 29, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2184
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A crankshaft is provided with a plurality of counterweights which are asymmetrically formed so that one surface has a shape which induces a flow of air and oil mist in a preselected and preferred direction. This shape also improves the aerodynamic characteristic of the counterweight and reduces the friction that the counterweight would otherwise experience as it rotates about the rotational axis of the crankshaft. A tapered surface is provided on a lower surface of each crankshaft and the tapered surface is positioned at a leading edge of each counterweight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.