Abstract: Preemption in wireless may be provided. Access Category (AC) parameters may be received for a preemption AC within a plurality of ACs. The preemption AC parameters may comprise a Contention Window maximum (CWmax) comprising a first predetermined value and a preemption Arbitrary Interframe Space Number (AIFSN) of less than or equal to a second predetermined value. AC parameters for others of the plurality of ACs may be received wherein a non-preemption AIFSN associated with any of the others of the plurality of ACs is greater than a sum of the first predetermined value the second predetermined value. Preemption for traffic in the preemption AC may be allowed.

Abstract: A protection assembly for a front end module of a motor vehicle includes a bumper beam, a subframe and a protection device bridging between the bumper beam and the subframe. A method of protecting a front end module of a motor vehicle is also provided.

Abstract: A protection assembly for a front end module of a motor vehicle includes a bumper beam, a subframe and a protection device bridging between the bumper beam and the subframe. A method of protecting a front end module of a motor vehicle is also provided.

Abstract: A rain water vessel (1) includes a water inlet (21), a main tank (26), a dump tank (27) inside the main tank, and a diverter valve (31, 32). The diverter valve (31, 32) is, after a period without rainfall of less than 1 hour, normally in a first condition in which it directs rain water entering the inlet (21) into the dump tank (27). A float (33) is operated when the dump tank is filled with water to a predetermined amount, to cause the diverter valve to be put in a second condition in which it causes the rain water to flow to the main tank (26). A drain (34, 36) lowers the amount of water in the dump tank over a period of time in excess of 1 minute by outflow to exterior of the vessel (1).

Abstract: The invention relates to fastening means of the known kind comprising a nut or bolthead and a spanner component, the nut or bolthead having a smooth edge surface and the spanner component having locating pins adapted to engage in cooperating bores in the nut or bolthead to rotate the nut or bolthead with the spanner component. Said fastening means are improved by providing (a) a sleeve which rotatably covers at least part of said edge surface and/or (b) an axial projection, preferably on the nut or bolthead, which is received as a rotatable fit in a recess, preferably in the spanner component, to restrict lateral movement between the nut or bolthead and the spanner component.