Abstract: An attenuated brake roller assembly is provided. The attenuated brake roller assembly comprises a base, a cam member, a brake roller, and a compression spring. The cam member coupled to the base, wherein the cam member is coupled to the base via a shaft that allows the cam member to rotate in a clockwise direction and counterclockwise direction. The brake roller coupled to the cam member. The compression spring is disposed within the base. The compression spring is configured to act on the cam member such that, responsive to the brake roller translating in a first direction, a compression spring force provided by the compression spring causes the brake roller to translate in a second direction opposite the first direction.

Abstract: A vertical restraint and guide rail assembly includes a number of features which individually, or collectively, may be implemented to enhance performance. One such feature is a vertical restraint head whose forwardmost point is laterally offset from a longitudinal axis A that passes through the pivot point. A second feature is a vertical restraint head having radiused bottom surface, the lowest point of the bottom surface being aligned with the longitudinal axis A even though the forwardmost point of the vertical restraint head is laterally offset from this axis. Another feature is a pair of stops formed on the housing in which the shaft of the vertical restraint member is rotatably mounted. The stops limit rotation of the vertical restraint member to thereby reduce fatigue or hysteresis of the spring mechanism that provides a resisting force when the vertical restraint member has been deflected in either rotational direction.