groove 22 but that future exit from the groove 22 will not easily be obtained once the spring 14 is engaged with the platform 34 the groove 22 is designed in such a manner than when the pegs 32 are inserted into the groove 22 the plunger 12 is only able to slide through the shaft 30 a distance equal to the length of the groove 22 furthermore the groove 22 in combination with the pegs 32 prevents the plunger 12 from completely exiting the shaft 30 once the force exerted by the spring 14 is applied fig3 is a perspective view of the mounting bracket 16 the mounting bracket 16 possesses a gear set 18 in its interior portion through which the teeth 24 of the plunger 12 may attach while in this embodiment the gear set 18 only extends partially along the interior of the mounting bracket 16 other embodiments may contain gear sets 18 extending throughout the entire interior of the mounting bracket 16 the mounting bracket 16 is generally shaped in a circular fashion to correspond with the circular base of the handle 10 however the mounting bracket 16 may take any shape such that it contains a gear set 18 for engagement of the teeth 24 the mounting bracket 16 also has two flanges 40 with holes for anchoring screws so that the unit may be mounted on a seat frame finally the mounting bracket 16 contains an opening such that the attachment piece 26 of the handle 10 may extend through the opening and connect with either the bowden cable or the drive rod 48 of the lumbar support system fig4.