Noise reducing structure of speed reduction device for electric CVVT
US9599159B2 · kind B2 · utility
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4References
10Claims
0Family size
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Key dates
| Filing date | Nov 26, 2014 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | May 16, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2361/91
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A noise reducing apparatus of a speed reduction device for electric continuous variable valve timing (CVVT), may include the speed reduction device having an inner tooth portion formed to be faced opposing an external wheel of a ball bearing in an interior diameter surface of a housing that may be integrally formed with a sprocket and rollers arranged through a cage between an inner tooth of the inner tooth portion and the external wheel of the ball bearing, wherein a coating layer may be formed to ease impact in exterior circumference portions of the rollers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.