US 12,072,009 B2
Harmonic gearset with split flexspline
Derick S. Balsiger, Prescott Valley, AZ (US); and Keith A. Bloxham, Gilbert, AZ (US)
Assigned to HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on May 27, 2022, as Appl. No. 17/826,231.
Prior Publication US 2023/0383831 A1, Nov. 30, 2023
Int. Cl. F16H 49/00 (2006.01); B64C 13/24 (2006.01); B64C 13/26 (2006.01); F16H 19/08 (2006.01)
CPC F16H 49/001 (2013.01) [B64C 13/26 (2013.01); F16H 19/08 (2013.01); F16H 2049/003 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A harmonic gearset, comprising:
a drive shaft;
first and second ground gears spaced apart from each other along the drive shaft;
an output gear disposed on the drive shaft, between the first and second ground gears;
a first flexspline disposed radially between the drive shaft, the first ground gear and the output gear; and
a second flexspline disposed radially between the drive shaft, the second ground gear and the output gear, wherein the first and second flexsplines are axially adjacent to each other,
wherein:
the first flexspline has a first set of splines that engages the first ground gear and a second set of splines that engages the output gear; and
the second flexspline has a third set of splines that engages the second ground gear and a fourth set of splines that engages the output gear.