Abstract: An apparatus for position detection using signal patterns created by use of a fixed disk having three conductive patterns disposed thereon. The first and second patterns are annular conductive paths which are concentric with respect to one another and the third pattern consists of radially extending conductive portions which are electrically connected to the second pattern. A brush carried by a rotating member whose position is sought to be determined is maintained in contact with the first and third pattern. In this manner an electrical signal variation is encountered as the radially extending conductive portions are encountered by the brush upon rotation thereof. This variation is thus correlated to the pattern defined on the third pattern. A microprocessor is used to add and subtract signals as the brush is rotated from a reference position based upon an indicia of motor direction.

Abstract: The window winder comprises at least one guide rail (2) for a slider (4) slidably mounted on this rail and supporting the wiondow glass (1), at least one cable (11, 8, 6) passing round at least one return pulley (14 . . . ) mounted on one end of the rail, and a driving element (13) driving the cable(s). The slider (1) is made in at least two parts, namely a front guide part (4a) slidable on the rail (2) and a rear part (4b) which supports the window glass and is mounted on the front part to be slidable through a given travel, the cable being fixed to the rear part (4b). These two parts are slidable relative to the rail and relative to one another, so that, at the end of the travel of the front part (4a) along the rail, the rear part can slide through said given travel. This arrangement permits reducing the height of the guide rails of window winders of the Bowden cable type without modifying the travel of the slider(s) and of the window glass and facilitating the mounting of these window winders.

Abstract: A method of forming vehicle wheel rims includes utilizing linear friction welding. A generally planar piece of metal material is placed into a coil position with two ends in abutment. The abutting ends are oscillated or moved, in a generally linear pattern, relative to each other to increase the temperature of the metal at each end. After the temperature has been increased sufficiently, without reaching the melting temperature of the metal, the linear motion is stopped. The ends are then aligned precisely and forced together with an increased axial load. After cooling, the two ends are permanently joined together with an essentially defect-free welded joint.