Patent ID: 8322242
Filing Date: 2012-12-04
Classification: F16H,Y10T

Abstract:
1. A linear actuation system comprising; a first linear actuator channel, a second linear actuator channel; each of said first linear actuator channel and said second linear actuator channel having a motor connected to a first output component, each of said first output component connected to a second output component, each said first linear actuator channel and second linear actuator channel additionally having a brake operable to selectively prevent rotation of said first output component, wherein each of said first output component is a screw shaft, each of said second output component is a nut, and each of said nuts is threaded onto one of said screw shafts, and wherein said screw shafts of the first and second linear actuators have opposing thread directions; each of said second output components connected to a sleeve, wherein each of said sleeves is rigidly connected to one of said nuts such that said sleeve rotates along with said nut; a gear housing connected to the first linear actuator channel and the second linear actuator channel, said gear housing comprising at least a first and second gear, wherein said first gear is connected to one of said sleeves and said second gear connected to the other of said sleeves; and said gear housing being movable, such that rotational motion of the first output components is converted into linear motion of the gear housing, and wherein said gear housing additionally includes an idler gear connecting said first and second gears such that while said first linear actuator and said second linear actuator are both operational said nuts do not rotate.