CN100457381C - 椭圆蜗壳的大小圆展开及成形方法 - Google Patents
椭圆蜗壳的大小圆展开及成形方法 Download PDFInfo
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- CN100457381C CN100457381C CNB2006100219762A CN200610021976A CN100457381C CN 100457381 C CN100457381 C CN 100457381C CN B2006100219762 A CNB2006100219762 A CN B2006100219762A CN 200610021976 A CN200610021976 A CN 200610021976A CN 100457381 C CN100457381 C CN 100457381C
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- spiral case
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Abstract
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CNB2006100219762A CN100457381C (zh) | 2006-09-29 | 2006-09-29 | 椭圆蜗壳的大小圆展开及成形方法 |
Applications Claiming Priority (1)
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CNB2006100219762A CN100457381C (zh) | 2006-09-29 | 2006-09-29 | 椭圆蜗壳的大小圆展开及成形方法 |
Publications (2)
Publication Number | Publication Date |
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CN1927532A CN1927532A (zh) | 2007-03-14 |
CN100457381C true CN100457381C (zh) | 2009-02-04 |
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Family Applications (1)
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CNB2006100219762A Expired - Fee Related CN100457381C (zh) | 2006-09-29 | 2006-09-29 | 椭圆蜗壳的大小圆展开及成形方法 |
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CN (1) | CN100457381C (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102817763A (zh) * | 2011-06-10 | 2012-12-12 | 安徽省科捷再生能源利用有限公司 | 工业冷却塔用混流式水轮机 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3186685A (en) * | 1963-09-18 | 1965-06-01 | Dominion Eng Works Ltd | Method for construction of hydraulic turbine spiral cases |
JPS5535127A (en) * | 1978-09-04 | 1980-03-12 | Hitachi Ltd | Spiral casing for hydraulic machine |
US4218182A (en) * | 1977-10-20 | 1980-08-19 | Tokyo Shibaura Denki Kabushiki Kaisha | Casings of hydraulic machines |
JPS56146073A (en) * | 1980-04-16 | 1981-11-13 | Hitachi Ltd | Water wheel casing |
JPH07310642A (ja) * | 1994-05-16 | 1995-11-28 | Toshiba Corp | 水力機械およびその製作方法 |
-
2006
- 2006-09-29 CN CNB2006100219762A patent/CN100457381C/zh not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3186685A (en) * | 1963-09-18 | 1965-06-01 | Dominion Eng Works Ltd | Method for construction of hydraulic turbine spiral cases |
US4218182A (en) * | 1977-10-20 | 1980-08-19 | Tokyo Shibaura Denki Kabushiki Kaisha | Casings of hydraulic machines |
JPS5535127A (en) * | 1978-09-04 | 1980-03-12 | Hitachi Ltd | Spiral casing for hydraulic machine |
JPS56146073A (en) * | 1980-04-16 | 1981-11-13 | Hitachi Ltd | Water wheel casing |
JPH07310642A (ja) * | 1994-05-16 | 1995-11-28 | Toshiba Corp | 水力機械およびその製作方法 |
Non-Patent Citations (2)
Title |
---|
利用空间展开技术实现水轮机蜗壳的数控切割. 武勇,刘大江.沈阳工业大学学报,第23卷第4期. 2001 |
利用空间展开技术实现水轮机蜗壳的数控切割. 武勇,刘大江.沈阳工业大学学报,第23卷第4期. 2001 * |
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Publication number | Publication date |
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CN1927532A (zh) | 2007-03-14 |
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Legal Events
Date | Code | Title | Description |
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C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee |
Owner name: DEC DONGFENG ELECTRIC MACHINERY CO., LTD. Free format text: FORMER NAME: DONGFENG MOTOR FACTORY CO., LTD., SICHUAN |
|
CP03 | Change of name, title or address |
Address after: 614802 Sichuan city of Leshan Province East Electric Group Dongfeng Motor Co., Wutongqiao District Patentee after: DEC Dongfeng Electric Machinery Co., Ltd. Address before: Leshan City, Sichuan province Wutongqiao District 614802 Sichuan Dongfeng Motor Factory Co Ltd Patentee before: Dongfeng Motor Factory Co., Ltd., Sichuan |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090204 Termination date: 20150929 |
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EXPY | Termination of patent right or utility model |