US 11,906,006 B2
Self-activated no-back device
Jakub Chmelar, Brno (CZ); Jiri Berjak, Brno (CZ); Ronald Vaughan, Tempe, AZ (US); and Tomas Ripel, Brno (CZ)
Assigned to HONEYWELL INTERNATIONAL INC., Charlotte, NC (US)
Filed by HONEYWELL INTERNATIONAL INC., Charlotte, NC (US)
Filed on Oct. 8, 2021, as Appl. No. 17/497,396.
Prior Publication US 2023/0115546 A1, Apr. 13, 2023
Int. Cl. F16D 55/38 (2006.01); F16D 65/02 (2006.01); F16D 59/02 (2006.01); F16D 55/04 (2006.01); F16D 125/38 (2012.01)
CPC F16D 59/02 (2013.01) [F16D 55/04 (2013.01); F16D 55/38 (2013.01); F16D 65/028 (2013.01); F16D 2125/38 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A self-activated no-back device, comprising:
a housing;
an input shaft rotationally mounted on the housing and adapted to receive an input drive torque;
an output shaft rotationally mounted on the housing, the output shaft selectively engaged with the input shaft and adapted to receive output load torque;
a reactor hub surrounding a portion of the input shaft and selectively rotatable therewith, the reactor hub having a reactor hub exterior side and a reactor hub interior side;
a plurality of first grooves formed in the reactor hub interior side, each of the first grooves having at least one first cam surface;
a brake hub mounted on the output shaft and rotatable therewith, the brake hub having a brake hub exterior side and a brake hub interior side;
a plurality of second grooves formed in the brake hub interior side, each of the second grooves having at least one second cam surface, and each of the second grooves aligned with one of the plurality of first grooves to define a plurality of groove pairs;
a plurality of balls, each ball positioned in one of the plurality of groove pairs;
a reactor plate mounted within the housing and having a reactor plate interior side and a reactor plate exterior side, the reactor plate interior side contacting the reactor hub;
a brake pack mounted within the housing and selectively contacted by the brake hub exterior side;
a reactor spring mounted within the housing and supplying a first spring force to the reactor plate; and
a load spring mounted within the housing and supplying a second spring force to the brake pack.