US 11,939,984 B2
Compressors having multi-speed gearboxes
Mark J. Robuck, Chadds Ford, PA (US); Scott H. Bouwer, Wilmington, DE (US); John C. Walters, Glen Mills, PA (US); and Steve G. Mackin, Bellevue, WA (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Feb. 8, 2022, as Appl. No. 17/667,534.
Claims priority of provisional application 63/181,728, filed on Apr. 29, 2021.
Prior Publication US 2022/0349410 A1, Nov. 3, 2022
Int. Cl. F04D 25/02 (2006.01); F04D 27/00 (2006.01); F04D 29/063 (2006.01); B64D 13/06 (2006.01)
CPC F04D 25/028 (2013.01) [F04D 27/004 (2013.01); F04D 27/007 (2013.01); F04D 29/063 (2013.01); B64D 13/06 (2013.01)] 26 Claims
OG exemplary drawing
 
1. An apparatus for use with a vehicle, the apparatus comprising:
a fluid channel to convey a fluid;
a compressor fluidly coupled to the fluid channel;
a gearbox operatively coupled to the compressor with a shaft, the gearbox to control the compressor via the shaft with a first gear ratio and a second gear ratio different from the first gear ratio to vary a flow rate of fluid in the fluid channel; and
clutches to vary the gearbox between the first gear ratio and the second gear ratio.