Rotation driving mechanism for windmill
US-2015377212-A1 · Dec 31, 2015 · US
Slewing bearing and rotating section support device for wind turbine
US8944692B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8944692-B2 |
| Application number | US-201013384698-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 20, 2010 |
| Priority date | Jul 27, 2009 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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A slewing bearing assembly effective to suppress additional expenses such as a mold cost and to resolve the problem associated with insufficient strength brought about by voids and, also, a rotation section support apparatus for a wind powered turbine are provided. The slewing bearing assembly includes inner and outer rings having raceway grooves, and a plurality of balls interposed between the raceway grooves, and a spacer interposed between the neighboring balls. This slewing bearing assembly is a four point contact ball bearing, in which respective sectional shapes of the raceway grooves are so shaped as to represent shapes in which each balls contacts inner surfaces of the raceway grooves in the inner and outer rings at four points. The spacer is made of a resinous material having a melt viscosity within the range of 1000 to 2000 Pa·s at a temperature of 270° C.
First claim
Opening claim text (preview).
What is claimed is: 1. A slewing bearing assembly comprising: an inner ring formed with a raceway groove; an outer ring formed with a raceway groove; a plurality of balls interposed between the raceway groove of the inner ring and the raceway groove of the outer ring, each of the balls having a diameter of 30 mm or larger; and a plurality of spacers, each separately interposed between the neighboring balls and having a ball contact surface that represents a single spherical…
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Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US8944692B2 cover?
- A slewing bearing assembly effective to suppress additional expenses such as a mold cost and to resolve the problem associated with insufficient strength brought about by voids and, also, a rotation section support apparatus for a wind powered turbine are provided. The slewing bearing assembly includes inner and outer rings having raceway grooves, and a plurality of balls interposed between the…
- Who is the assignee on this patent?
- Hori Michio, Kuwahara Nurumu, Ntn Toyo Bearing Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F03D7/0204. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).