Torsion damping device particularly clutch friction more especially for motor vehicle
AssigneeSociete Anonyme Francaise du Ferodo
InventorPierre Loizeau
Life of this patent
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Abstract
A torsion damping assembly comprises two coaxial parts mounted for relative angular movement within predetermined limits of angular displacement. Circumferentially acting springs are operative between the parts in a range of angular displacement. An intervening element is responsive to centrifugal force for movement from a standby position to an operative position above a predetermined structural speed and is urged back toward the standby position in the operative position. The intervening element directly or indirectly circumferentially bears against one of the coaxial parts to define a circumferential abutment for one of the resilient elements in the operative position to modify the operational characteristics of the assembly.
Claims28
A torsion damping assembly of the type including at least two coaxial parts mounted for relative angular movement within predetermined limits of angular displacement, circumferentially acting resilient elements opposing said relative angular movement over at least a range of said angular displacement, the improvement comprising at least one intervening means responsive to centrifugal force for movement between a standby position and an operative position above a predetermined speed of rotation, return means urging said intervening means from said operative position back toward said standby position, said intervening means effectively circumferentially bearing against one of said coaxial parts to define a circumferential abutment for one of said resilient elements in said operative position for modifying the operational characteristics of said torsion damping assembly.
A torsion damping assembly of the type including at least two coaxial parts mounted for relative angular movement within predetermined limits of angular displacement, said coaxial parts comprising respective parallel annular components, circumferentially acting resilient elements opposing said relative angular movement over at least a range of said angular displacement, each of said resilient members being housed partly in an aperture formed in the annular component of one of said coaxial parts and partly in an aperture formed in the annular component of the other of said component parts, said apertures having circumferentially opposed radial edges, the improvement comprising intervening means responsive to centrifugal force for movement between a standby position and an operative position above a predetermined speed of rotation, return means for urging said intervening means from said operative position toward said standby position, said intervening means effectively taking the place of one of the radial edges of one of said apertures housing one of said resilient members in said operative position of said intervening means.
Dependencies are inferred from the claim text.