ROBERT A SCHAEFER
Engineering in North Reading, MA

5584654, Dec 17, 1996

Dec 22, 1995

8/577072

Robert A. Schaefer - North Reading MA
Richard W. Laferriere - Topsfield MA

General Electric Company - Cincinnati OH

F04D 2954

4152093

A fan stator includes a split outer casing having a pair of outer rails, and a pair of key slots disposed at a splitline thereof. A plurality of standard stator vanes have outer platforms and hooks which engage the casing rails for supporting the vanes, with the vanes also having inner hooks extending from inner platforms thereof. A pair of locking stator vanes are disposed at the casing splitline and include an outer platform having outer hooks which engage the casing rails, an anti-rotation key disposed in the casing key slot, and an inner platform having first and second locking hooks extending therefrom. The first locking hook is equal in size with the first inner hooks and includes a first dam blocking the first locking hook at one end thereof, and the second locking hook is axially shorter than the second inner hooks and includes a second dam blocking the second locking hook at the same end thereof. A plurality of arcuate standard shrouds includes a pair of inner rails engaging the vane inner hooks, and a pair of arcuate locking shrouds includes inner rails also engaging the vane inner hooks. The locking shroud rails have a pair of oppositely facing notches at one circumferential end thereof sized for receiving the dams of the locking vane.

5031313, Jul 16, 1991

Apr 6, 1990

7/505625

Lawrence W. Blair - Boxford MA
Robert A. Schaefer - North Reading MA

General Electric Company - Lynn MA

B21K 304, B23P 600

298891

An improved gas turbine engine blade having increased resistance to foreign object damage is disclosed. The blade includes a swept-back leading edge portion in the tip region of the blade for improving resistance to tip curl due to foreign object impact. A method of forming such a gas turbine engine blade from a blade having leading edge tip curl caused by foreign object damage is also disclosed.

5639212, Jun 17, 1997

Mar 29, 1996

8/626212

Robert Allen Schaefer - North Reading MA
Robert Patrick Tameo - South Peabody MA
Richard William Laferriere - Topsfield MA

General Electric Company - Cincinnati OH

F01D 1100

4151737

A compressor includes an axially split casing surrounding stages of rotor blades and stator vanes. The vanes include a shroud joined to radially inner ends thereof and disposed in a cavity adjoining a rotor disk. An annular cavity seal abuts the vane shroud and adjoins the rotor disk for sealing the cavity therebetween. The seal is axially retained to the shroud in both casing halves, and is radially inwardly retained in only the casing lower half for allowing assembly and removal of the casing upper half relative to the casing lower half without radial interference between the shroud and the seal.

4961686, Oct 9, 1990

Feb 17, 1989

7/312093

Lawrence W. Blair - Boxford MA
Robert A. Schaefer - North Reading MA

General Electric Company - Lynn MA

F01D 514

416223A

An improved gas turbine engine blade having increased resistance to foreign object damage is disclosed. The blade includes a swept-back leading edge portion in the tip region of the blade for improving resistance to tip curl due to foreign object impact.