Exhaust hood and steam turbine

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11591934
APP PUB NO 20210180470A1
SERIAL NO

16760934

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

An exhaust hood (Ec) of the present invention is provided with an inner casing (21), an outer casing (30), and a diffuser (26). The inner casing (21) surrounds a rotor from the outside in a radial direction, and forms a first space (21s) in which a fluid flows in an axial direction (Da) between the rotor and the inner casing (21). The diffuser (26) is provided with a bearing cone (29) that has a diameter that gradually widens moving towards an axial downstream side (Dad) and forms a cylindrical shape extending to the axial downstream side (Dad) to be continuous with the outer circumferential surface of a rotor shaft that forms the first space (21s). An end edge (29a) on the axial downstream side (Dad) of the bearing cone (29) forms an oval shape in which, in a direction orthogonal to an axial line (Ar), a distance (R2an) between the axial line (Ar) and a second cone end part (29ab) of a second side (Dan) is greater than a distance (R2ex) between the axial line (Ar) and a first cone end part (29aa) of a first side (Dex).

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

  • MITSUBISHI HEAVY INDUSTRIES, LTD.

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kuwamura, Yoshihiro Tokyo, JP 48 218
Matsumoto, Kazuyuki Tokyo, JP 63 371
Nakanishi, Kei Tokyo, JP 3 5
Nishikawa, Toyoharu Tokyo, JP 20 49
Sugishita, Hideaki Tokyo, JP 57 530

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Aug 28, 2026
7.5 Year Payment $3600.00 $1800.00 $900.00 Aug 28, 2030
11.5 Year Payment $7400.00 $3700.00 $1850.00 Aug 28, 2034
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
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