Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.1696/CHE/2012 A
(19) INDIA
(22) Date of filing of Application :01/05/2012 (43) Publication Date : 21/06/2013
(54) Title of the invention : DIAPHRAGM FOR TURBOMACHINES AND METHOD OF MANUFACTURE
(51) International classification :F01D 5/00
(31) Priority Document No :00768/11
(32) Priority Date :05/05/2011
(33) Name of priority country :Switzerland
(86) International Application No
:NA
Filing Date
:NA
(87) International Publication No : NA
(61) Patent of Addition to Application Number :NA
Filing Date
:NA
(62) Divisional to Application Number
:NA
Filing Date
:NA
(71)Name of Applicant :
1)ALSTOM TECHNOLOGY LTD.
Address of Applicant :BROWN BOVERI STRASSE 7, CH-
5400 BADEN Switzerland
(72)Name of Inventor :
1)LORD, ADRIAN CLIFFORD
2)HEMSLEY, PHILIP DAVID
(57) Abstract :
A turbine diaphragm assembly is described having an annulus of static blades, each static blade including at least an aerofoil and
an outer platform; and an outer diaphragm ring or segments of a ring for holding the annulus of static blades; with confronting
edges of the outer platforms and the ring are held by an interference fit when pushed in axial direction into contact with the
interference fit designed to withstand the forces on the diaphragm during operation of the assembled turbine
No. of Pages : 17 No. of Claims : 10
The Patent Office Journal 21/06/2013 13925