Abstract: The invention is a pointing device (20) for controlling an on-screen pointer (32). The pointing device (20) has a top body portion (22) for manipulation by the thumb of a user, and a bottom body portion (30) for manipulation by the fingers of the same hand of a user. Relative movement between the top and bottom body portions (22, 30) causes movement of an on-screen pointer (32).

Abstract: The invention is a cleaning device (2) for a computer mouse (86) or other similar pointing device that can clean the entire surface of a position roller (90)quickly, easily, completely, and without damage to the workings of the mouse (86). The device has a body portion (6), a motor (10), and a cleaning head (14) that includes a drive wheel (30) for spinning the position rollers (90)that is in communication with the motor (10), and cleaning discs (34) for releasing accumulated dirt and dust into the mouse cavity (94). Rotation of the motor (10) transforms into rotation of the drive wheel (30), which in turn is transformed into rotation of the position rollers (90)inside a computer mouse (86). When a cleaning disc (34) is brought into contact with the rapidly spinning position roller (90), the accumulated dust and dirt thereon is released into the cavity (94) of the mouse (86) where it can be easily removed.