Trackless Seat Adjuster

This seat adjuster is based on a proprietary four bar link mechanism that returns a linear motion identical to that of a conventional track arrangement. A third "compensator" member is the basis of the linear motion linkage system. Two of these linkage systems connect the seat frame anchorage to the riser assembly. Key features of this design include: Novel four bar link motion compensator returns linear output Significant weight and cost savings Capability to offset front and rear mounting to avoid floor obstructions

The major advantages of this arrangement are as follows:

• Utilizes a lightweight system of discrete components interacting through rotary joints. The elimination of all linear, sliding interfaces significantly increases the reliability of the system. Mass analysis of equivalent function, physical prototypes returned a 35% weight saving compared to a conventional track arrangement
• Simplified manufacturing processes assure high quality and cost effective assemblies. Individual load carrying members can be optimised to maximize system strength to weight ratio. This arrangement is well suited to fully structural seats, capable of carrying all required seatbelt loadings
• System can accommodate a wide range of floor pan configurations as the linkage systems can be offset