US 9,810,096 B2
Turbomachine fan casing assembly
Dale Edward Evans, Derby (GB); and David Laker Christmas, Bristol (GB)
Assigned to ROLLS-ROYCE plc, London (GB)
Filed by ROLLS-ROYCE PLC, London (GB)
Filed on Mar. 13, 2015, as Appl. No. 14/657,601.
Claims priority of application No. 1405388.8 (GB), filed on Mar. 26, 2014.
Prior Publication US 2015/0275695 A1, Oct. 1, 2015
Int. Cl. F01D 25/26 (2006.01); F02K 3/06 (2006.01); F01D 25/24 (2006.01); F01D 25/28 (2006.01); F01D 21/04 (2006.01)
CPC F01D 25/26 (2013.01) [F01D 25/243 (2013.01); F01D 25/28 (2013.01); F02K 3/06 (2013.01); F01D 21/045 (2013.01); F05D 2220/32 (2013.01); F05D 2220/36 (2013.01); F05D 2230/51 (2013.01); F05D 2230/60 (2013.01); F05D 2260/311 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A turbomachine casing assembly comprising:
an inner casing element for arrangement radially outward of a turbomachine fan;
an outer casing element for arrangement radially further outward of the turbomachine fan;
a retaining lip arranged radially inward of at least a region of the inner casing element;
a separator located downstream of the retaining lip extending between the inner and outer casing elements, and the seperator arranged to urge a portion of the inner casing element against the lip;
wherein the separator is arranged to engage a frangible region of the inner casing element such that the frangible region is configured to break in preference to the separator.