US 12,486,867 B2
Frame for magnetic-foil bearing
Alexander R. Nelson, Amston, CT (US); Benstone I. Schwartz, Sanford, FL (US); Philip A. Varney, Coventry, CT (US); and Andrew V. Schwendenmann, Hampden, MA (US)
Assigned to RTX Corporation, Farmington, CT (US)
Filed by Raytheon Technologies Corporation, Farmington, CT (US)
Filed on Apr. 21, 2023, as Appl. No. 18/137,862.
Prior Publication US 2024/0352966 A1, Oct. 24, 2024
Int. Cl. F16C 32/04 (2006.01); F16C 17/02 (2006.01)
CPC F16C 32/0402 (2013.01) [F16C 17/024 (2013.01); F16C 32/0474 (2013.01); F16C 2360/23 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A bearing assembly, comprising:
a frame extending axially along and circumferentially about an axis, the frame including an inner bore and a plurality of channels arranged circumferentially about the axis;
a magnetic bearing stator including a stator body and a plurality of windings, the stator body circumscribing the frame, the stator body comprising a plurality of stator protrusions arranged circumferentially about the axis, each of the plurality of stator protrusions projecting radially inward into a respective one of the plurality of channels, and each of the plurality of windings wrapped around a respective one of the plurality of stator protrusions; and
a foil bearing disposed within the inner bore and retained to the frame, the foil bearing including a top foil and a bump foil, the top foil retained to the frame, the top foil including an arcuate base and a mount, the arcuate base disposed within the inner bore and extending circumferentially about the axis between opposing ends, the mount projecting radially out from the arcuate base into a retention slot in the frame and disposed at a circumferential intermediate position between the opposing sides, and the bump foil retained to the frame and disposed radially between the top foil and the frame.