US 11,927,139 B2
Splined shaft
Juan-Luis Marcos Izquierdo, Moissy-Cramayel (FR); and Quentin Pierre Henri Pigott, Moissy-Cramayel (FR)
Assigned to SAFRAN TRANSMISSION SYSTEMS, Colombes (FR)
Filed by SAFRAN TRANSMISSION SYSTEMS, Colombes (FR)
Filed on Aug. 10, 2022, as Appl. No. 17/884,730.
Claims priority of application No. 2108617 (FR), filed on Aug. 10, 2021.
Prior Publication US 2023/0051474 A1, Feb. 16, 2023
Int. Cl. F16D 1/10 (2006.01); F02C 7/36 (2006.01); F16H 57/08 (2006.01)
CPC F02C 7/36 (2013.01) [F16H 57/082 (2013.01); F05D 2240/60 (2013.01); F05D 2250/184 (2013.01); F05D 2260/40311 (2013.01); F16C 2226/80 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A splined shaft for a turbine engine having a periphery and comprising splines evenly distributed over the periphery, the splines being spaced apart from each other, at least one portion of the splines being spaced apart by a modified pitch p with respect to a nominal pitch pn of the splines, a ratio of an absolute value of a difference between the modified pitch and the nominal pitch (Δp), to the nominal pitch, i.e. |pn−p|/pn being different from zero, wherein the difference (Δp) between the nominal pitch pn between the splines with respect to the modified pitch p, along the periphery, progressively increases or decreases from one spline to another, as the periphery of the splined shaft is covered, said difference increasing up to a maximum (Δpmax) before decreasing down to a minimum (Δpmin).