Turbo-machine blade
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United States of America Patent
Stats
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Jan 3, 1989
Grant Date -
N/A
app pub date -
Jan 10, 1983
filing date -
Jan 19, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Turbo-machine blade, including: a continuously curved profile contour having convex curved leading edge, suction side and trailing edge regions, and a concave curved pressure side region; the leading edge section being formed of a first ellipse section and a second ellipse section adjacent the first ellipse section; the suction side region being formed of a first circle section adjacent the second ellipse section and a first parabola section of a first second-order parabola being adjacent the first circle section; the trailing edge region being formed of a second circle section adjacent the first parabola section; and the pressure side region being formed of a third circle section adjacent the first ellipse section and a second parabola section of a second second-order parabola being disposed between the second circle section and the third circle section.

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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
PURCARU BEBE-TITU | MUHLHEIM (RUHR) |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
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Purcaru, Bebe-Titu | Aktienstr. 200 - 204, 4330 Mulheim/Ruhr, DE | 2 | 23 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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