Patent ID: 7059454
Filing Date: 2006-06-13
Classification: F16F,Y10T

Abstract:
1. A one way braking device, comprising: a first housing having a first sealed chamber filled with a viscous fluid and a first locking portion on a circumference of said first housing; a braking rotor being rotatably supported within the first chamber; a pinion attached to said braking rotor and adapted to mesh with a gear; and a second housing having a second chamber which has a second locking portion on a wall thereof; wherein the first housing is floating in the second chamber; the first and second locking portions are engaged when the first housing is moved relative to the second housing in a first direction, wherein, when said first and second locking portions are engaged, rotational movement of said first housing about the rotational axis of the braking rotor and relative to said second housing is limited in both clockwise and counterclockwise directions; and the first and second locking portions are disengaged to allow a free running between the first and second housings when the first housing is moved relative to the second housing in a second direction opposite to the first direction, wherein, when said first and second locking portions are disengaged, said first housing is rotatable about the rotational axis of the braking rotor and relative to said second housing in both said clockwise and counterclockwise directions.