192 clutches and power-stop control – Transmission and brake – Torque-responsive brake
Patent
1998-05-29
2000-08-29
Bonck, Rodney H.
192 clutches and power-stop control
Transmission and brake
Torque-responsive brake
F16H 2702
Patent
active
061094153
ABSTRACT:
A section of an upright ballscrew having a transverse, horizontal ballscrew flange is received in a housing that allows limited axial (up and down) movement of the ballscrew, in opposite directions from a central position. The ballscrew receives and transfers a bi-directional axial and torque load from an external source, such as the load resulting from the horizontal stabilizer hinge moment in an aircraft trim actuator. When under compression the ballscrew flange is pressed downward against a bottom multistage brake which includes lower skewed roller brake disks. Similarly, tension applied to the ballscrew lifts the ballscrew flange against a top multi-stage brake including upper skewed roller brake disks. The brakes include ratchet wheels which control the direction of braking force application depending on whether the ballscrew is under tension or under compression, and mechanism for centering the load on the rollers of the brake disks.
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Morgan Bruce E.
Zebroski, Jr. Henry A.
Bonck Rodney H.
The Boeing Company
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