US 12,134,374 B2
Braking device
Jonathan A. Darby, Westlands (GB); and Colin R. Harrison, Wolverhampton (GB)
Assigned to GOODRICH ACTUATION SYSTEMS LIMITED, West Midlands (GB)
Filed by Goodrich Actuation Systems Limited, Solihull (GB)
Filed on Jun. 9, 2022, as Appl. No. 17/836,031.
Claims priority of application No. 21275084 (EP), filed on Jun. 18, 2021.
Prior Publication US 2022/0402464 A1, Dec. 22, 2022
Int. Cl. B60T 1/06 (2006.01); B64C 9/24 (2006.01); B64D 45/00 (2006.01); F16D 3/10 (2006.01); F16D 3/72 (2006.01); F16D 121/14 (2012.01); F16D 125/36 (2012.01)
CPC B60T 1/062 (2013.01) [B64C 9/24 (2013.01); B64D 45/00 (2013.01); F16D 3/10 (2013.01); F16D 3/72 (2013.01); F16D 2121/14 (2013.01); F16D 2125/36 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A brake device for braking rotation of an input shaft, comprising:
a selectively operable trigger brake comprising:
a static element;
a trigger brake shaft mounted for rotational and axial movement relative to the static element and the input shaft;
a preloaded torsion spring rotationally coupled to the input shaft but permitting a limited rotational movement between the trigger brake shaft and the input shaft;
a roller jamming mechanism operable upon the relative rotation between the trigger brake shaft and the input shaft exceeding a predetermined amount to stop rotation of the input shaft upon operation of the trigger brake; and
a brake actuator for selectively moving the trigger brake shaft into and out of engagement with a contact surface of the static element;
wherein the engagement of the contact surface of the static element and the trigger brake shaft overcomes the preload of the torsion spring so as to produce a relative rotation between the trigger brake shaft and the input shaft to operate the roller jamming mechanism.