Locking spacer assembly
US-9518471-B2 · Dec 13, 2016 · US
Steam turbine
US9028218B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9028218-B2 |
| Application number | US-201213483181-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 30, 2012 |
| Priority date | Jun 3, 2011 |
| Publication date | May 12, 2015 |
| Grant date | May 12, 2015 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A steam turbine having a fork-type joint structure is provided that secures sufficient strength for endurance of stress corrosion cracking, low-cycle fatigue, and high-cycle fatigue, and extends an operating life while making it possible to endure long-term operation. The turbine includes a rotor having a plurality of rotor forks rowed in an axial direction; a turbine blade having blade forks arranged in the axial direction of the rotor, the blade forks engaged with the rotor forks; a plurality of pin holes whose positions are different from each other in the radial direction of the rotor; and a plurality of fork pins inserted into the plurality of pin holes in the axial direction of the rotor. A clearance exists between an inner diameter of the pin hole of the blade fork and a diameter of the fork pin, the clearance varying depending on positions in the axial direction of the turbine.
First claim
Opening claim text (preview).
What is claimed is: 1. A steam turbine comprising: a turbine rotor having rotor forks rowed in an axial direction; a turbine blade having blade forks rowed in the axial direction of the turbine rotor, the blade forks being engaged with the rotor forks; a plurality of aligned pin holes formed in the blade forks and the rotor forks; and a plurality of fork pins insertable through the pin holes of the blade forks and the rotor forks in the axial direction of the turbine rotor,…
Assignees
Inventors
Classifications
Mechanical Engineering · mapped topic
- F01D5/3053Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9028218B2 cover?
- A steam turbine having a fork-type joint structure is provided that secures sufficient strength for endurance of stress corrosion cracking, low-cycle fatigue, and high-cycle fatigue, and extends an operating life while making it possible to endure long-term operation. The turbine includes a rotor having a plurality of rotor forks rowed in an axial direction; a turbine blade having blade forks a…
- Who is the assignee on this patent?
- Asai Kunio, Shishime Keiko, Harashima Yasuyoshi, and 5 more
- What technology area does this patent fall under?
- Primary CPC classification F01D5/3053. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue May 12 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).