direction indicated by arrow 190 a protrusion 192 on the sled block 184 is adapted to engage with the first sled 40 a in order to prevent movement of the sled block 184 in the direction indicated by arrow 190 beyond the position shown in fig4 referring now to fig5 a cross sectional view similar to that shown in fig4 is illustrated the catch and memory assembly 24 is shown in the configuration it is in when the backrest 14 has been dumped as shown in fig5 the bowden cable 46 has applied a force to the activation bracket 34 and the activation bracket 34 has been rotated in the activation direction 52 as shown in fig3 the activation bracket 34 is shown in an engagement position the activation bracket 34 is adapted to engage the lock activation pin 56 when the activation bracket 34 is in the engagement position thus the activation bracket 34 actuates the lock activation pin 56 causing the track lock assembly 54 to disengage the activation bracket 34 also includes a sled engagement surface 66 the sled engagement surface 66 is adapted to move the first sled 40 a when the activation bracket 34 is in the engagement position the sled engagement surface 66 applies a force to the first sled 40 a sufficient to overcome the biasing force of the first sled spring 42 a shown in fig3 thus the sled engagement surface 66 moves the first sled 40 a to a sled activated position in.