Abstract: A disc brake which is particularly designed for arcuate travel of less than 360 degrees has sector shaped segments, i.e. segments which are not complete circles and which are interleaved into a disc pack of multiple layers, wherein some layers of the disc pack each consist of a single disc segment which is less than a complete circle. Some segments are rotatable about an axis and others are stationary and have friction brake material carried on them at a position remote from the axis of rotation.

Abstract: A disc brake which is particularly designed for arcuate travel of less than 360 degrees has pie shaped segments, i.e. segments which are not complete circles which are interleaved. Some segments are rotatable about an axis and others are stationary and have friction brake material carried on them at a position remote from the axis of rotation.

Abstract: A non-magnetic molded plastic bobbin has a bore by which the bobbin is slip-fitted upon the cylindrical outer surface of the inner body carried by the rotating shaft. An integrally molded radial thrust flange at one end of the bobbin slip-fits against a radial flange of the inner body and defines an annular recess for the winding of a coil on the bobbin. The molded plastic bobbin also has an annular recess which extends concentric with the bore to receive the magnet body therewithin. A ridge is molded integrally with the bobbin on the wall thereof defining the magnet body annular recess and engages against the magnet body to retain the magnet body within the recess. A plurality of snap fingers are molded integrally with the bobbin and project inwardly from the bore thereof into slip-fitting relationship within an annular groove in the inner body to enable rotation of the inner body relative the stationary bobbin while retaining the bobbin axially relative the inner body.

Abstract: A coupling arrangement is disclosed for establishing a rotary connection between an axially movable armature element and a rotary drive hub, which transmits torque from the hub into the armature while allowing limited axial movement of the armature against an axial spring force exerted by the coupling arrangement. The coupling arrangement includes a series of circumferentially extending leaf springs, each having one end pinned to the armature and the other riveted to the hub. The circumferential pattern of the spring links is such that each link overlies other spring links in the series to enable the length of the spring link to be great enough to insure adequate flexibility of the links to accommodate axial movement of the armature, while enabling a sufficient number of the spring links to be disposed about the armature and hub axis to adequately transmit the torque through the clutch unit.