Abstract: A method and system implementing software licensing management under machine virtualization are disclosed. According to one embodiment, a system comprises a virtual platform running on a physical machine; a binding agent running on a host operating system of the virtual platform; a license enforcement module running on a virtual machine instance of the virtual platform. The license enforcement module is in communication with the binding agent. The binding agent enforces a mutex lock to ensure that only a specified number of license enforcement modules are running on the physical machine.

Abstract: A seat headrest assembly including a headrest (1) mounted on at least one support post (3) which is connectable to a seat backrest (2). The headrest (1) is mounted on the support post (3) so as to be movable relative thereto in the longitudinal direction of the post (3). Electrically powered drive mechanism (18) including a motor (15) is contained within the headrest (1). A screw threaded spindle (19) is drivably connected to the motor (15) through a worm drive (18) and cooperatively engages with a nut (20) attached to the post (3). The arrangement is such that rotation of the spindle (19) causes the headrest (1) to move along the post (3). A source or electrical power is connectable to the motor (15) through an electric conductor which is provided on or is formed by the support post (3).

Abstract: A seat height adjustment system particularly adapted for use with vehicle seats and which permits the elevation of one side of the seat base to be adjusted relative to the elevation of an opposite side of that base. The system employs spring assemblies to provide an upwardly directed bias on the seat base which urges that base towards a position of maximum elevation. An actuator is operable to effect downward adjustment of the seat base elevation by imposing a force on the seat base which acts counter to the bias force. Actuator may include two electric motors each of which is connected to a respective two corners of the seat base through flexible drive cables. The arrangement is such that the seat base corners controlled by a respective one of the motors move up or down according to whether the motor is operated in a forward or a reverse mode respectively.