Charles L Duello

US Patent:

50851004, Feb 4, 1992

Filed:

Jan 24, 1991

Appl. No.:

7/645234

Inventors:

Charles L. Duello - Arlington TX

Assignee:

Bell Helicopter Textron Inc. - Fort Worth TX

International Classification:

F16H 5704
F16H 5702

US Classification:

74606R

Abstract:

A shroud (20) for a gear train (12) disposed within a gear case (22) includes a plurality of meshing gears (14), each gear (14) having sides (14a, 14b), teeth (16) and an outer diameter (14c). The shroud (20) encircles the outer diameter (14c) of each gear (14) within the gear train (12) and for enclosing the sides (14a, 14b) adjacent to the outer diameter (14c) of each gear (14) within the gear train (12). The shroud (20) includes a pair of side walls (20a, 20b) and an end wall (20c). The walls (20a, 20b, 20c) enclosed the teeth (16) of each of the gears (14) within the gear train (12) for substantially minimizing cooling fluid present within the gear case (22) from contacting the gear train (12).

US Patent:

50979264, Mar 24, 1992

Filed:

Oct 13, 1989

Appl. No.:

7/421065

Inventors:

Charles L. Duello - Arlington TX

Assignee:

Bell Helicopter Textron Inc. - Fort Worth TX

International Classification:

F01M 118

US Classification:

184 64

Abstract:

An embergency lubrication mist system is operable in response to a drop in oil pressure in a primary lubrication system for components inside a casing. An emergency oil reservoir provides a head of oil for discharge through an air activated misting nozzle sized to dispense an oil in a mist for fogging the inside of the casing and coating the components inside. The misting nozzle has an air passageway normally closed to a source of air and opening to operate the emergency system in response to a drop of pressure in the primary lubricating system.

US Patent:

50483706, Sep 17, 1991

Filed:

Oct 18, 1989

Appl. No.:

7/423767

Inventors:

Charles L. Duello - Arlington TX

Assignee:

Bell Helicopter Textron Inc. - Fort Worth TX

International Classification:

F16H 5702

US Classification:

74606R

Abstract:

A shroud for a gear train (12) includes a plurality of meshing gears (14), each gear (14) having sides (14a, 14b), teeth (16) and an outer diameter (14c). The shroud (10) includes a curvilinear enclosure (20) for encircling the outer diameter (14c) of each gear (14) within the gear train (12) and for enclosing the sides (14a, 14b) adjacent to the outer diameter (14c) of each gear (14) within the gear train (12). The enclosure (20) includes a pair of side walls (20a, 20b) and an end wall (20c). The end wall (20c) includes first (36) and second (38) ports associated with ones of the plurality of gears (14) in the gear train (12), such that the first port (36) allows for cooling fluid to be injected into the enclosure (20) and the associated second port (38) allows for cooling fluid to be ejected from the enclosure (20). The enclosure (20) side walls (20a, 20b) further include a port (30) adjacent to the area where ones of the plurality of gears (14) mesh for allowing intake and discharge of cooling fluid and air from the enclosure (20).

US Patent:

20150125299, May 7, 2015

Filed:

Nov 5, 2013

Appl. No.:

14/071987

Inventors:

- Stratford CT, US
Kendall Wedman - Wichita KS, US
Todd A. Garcia - Mansfield TX, US
Charles Duello - Burleson TX, US

Assignee:

Sikorsky Aircraft Corporation - Stratford CT

International Classification:

B64C 27/10
B64D 35/04

US Classification:

416128, 416124

Abstract:

A rotor system includes a first rotor located at a rotor axis that imparts a first axial load and a first moment, and a first shaft connected to the first rotor at the axis. A first bearing connects a gearbox to the first shaft, transferring the first axial load from the first shaft to the gearbox. A second rotor located at the axis imparts a second axial load and a second moment. A second shaft is connected to the second rotor at the axis, the second shaft coaxial with the first rotor. A second bearing connects the gearbox to the second shaft, transferring the second axial load from the second shaft to the gearbox. A nonrotating standpipe is located at the axis radially between the first shaft and the second shaft. An intershaft bearing located at the standpipe reacts the first and second moments using the first and second bearings.