Patent ID: 6241067
Filing Date: 2001-06-05
Classification: F16D

Abstract:
A mechanical clutch comprising:(a) two elements (11, 21) which, for the purpose of positively engaging one another, comprise opposed end toothings (12, 22) which are adapted to engage one another, said first element (11) and said second element (21) being rotatably mounted and axially supported, said second element (21) being either axially blocked in a first position for the purpose of being positively non-rotatably engaged with said first element (11), or being axially moved into a second position for the purpose of being freely rotatably and disengaged from said first element (11); and(b) blocking means for selectively preventing axial movement of said second element (21), comprising a cavity system whose shape is variable and which is filled with a magneto-rheological fluid; a displacing member which can be moved between a first position and a second position, which delimits said cavity system and which is connected to said second element (21); and an electro-magnet (37) which is operative, when energized, to magnetize at least part of said magneto-rheological fluid and thus make it rigid.