Patent JPS572402A successfully refreshed from Google Patents.
JPS572402A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Structure of steam turbine rotor keyway
Assignee: Hitachi Ltd
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Filing: 1980-06-06
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Granted: —
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Expires: 2000-06-06
Abstract
Abstract PURPOSE: To prevent a crack due to corrosion by forming a gap between a semicircular keyway and an inserted key material, particularly in a part where a concentrated stress in the keyway is high so that a steam and a dew may flow easily during an operation. CONSTITUTION: A key material 5 is inserted into a semicircular keyway 4 in such a way as to form a gap at least in a part where a concentrated stress in the keyway is high, thereby restraining a corrosion as well as preventing a crack. It is desirable to make a gap of 0.15W0.2mm. COPYRIGHT: (C)1982,JPO&Japio
Inventors
- 👤 Kenichi Usami
- 👤 Seishin Kirihara
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-08 09:32
CPC Classifications
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