Compound motion structure

A compound motion inducing and supporting structure for connection between two surfaces required to be relatively supported and to have compound relative motion induced therebetween said structure comprising an arm assembly comprising a first swing arm and a second swing arm, said first swing arm and said second swing arm being swingably connected with each other at respective one ends by a first hinge connection located therebetween;

• and wherein a second hinge connection is provided at the opposite end of said first swing arm for connection with a first surface, and wherein a third hinge connection is provided at the opposite end of said second swing arm for connection with a second surface;
• the arm assembly being such that a swing axis of the third hinge connection is inclined in a mirror image arrangement relative to a swing axis of the second hinge connection, and at a compound angle with respect to a swing axis of the first hinge connection;
• said first swing arm and said second swing arm being movable to cause swinging about all swing axes to a retracted or an extended swing condition where the first swing arm and the second swing arm are respectively retracted or extended relative to each other;
• and wherein when moved to an extended swing condition from a retracted swing condition there will be compound motion swinging of said second surface relative to said first surface and the swing axes of the second hinge connection and the third hinge connection share a common plane intersecting therewith at all swing conditions.

A compound motion inducing and supporting structure connected between two surfaces required to be relatively supported and to have compound relative motion induced therebetween;

• said structure comprising at least two arm assemblies, each arm assembly comprising a first swing arm and a second swing arm, said first swing arm and said second swing arm being swingably connected with each other at respective one ends by a first hinge connection located therebetween;
• and wherein a second hinge connection is provided at the opposite end of said first swing for connection with a first surface, and wherein a third hinge connection is provided at the opposite end of said second swing arm for connection with a second surface;
• and wherein swing axes of the second hinge connection and third hinge connection are inclined relative to the first hinge connection, each of the at least two arm assemblies being mounted to the first surface and the second surface in spaced apart relationship;
• said first swing arm and said second swing arm being mounted to permit swinging about all axis to a retracted swing condition where the opposite ends of the first swing arm and second swing arm assembly are relatively closest to each other or to an extended swing condition wherein the opposite ends of the first swing arm of each arm assembly and second swing arm are relatively further away from each other;
• and wherein when moved to the extended swing condition from the retracted swing condition there will be compound motion swinging of said second surface relative to said first surface and the swing axes of the second hinge connection and third hinge connection trace a path where there will be a common plane intersecting therewith at all swing conditions

An apparatus comprising:

• a first arm and a second arm swingably coupled together;
• a first surface coupled to an opposite end of the first arm;
• a second surface coupled to an opposite end of the second arm;
• and
• the first arm and the second arm being movable thereby resulting in a compound motion of one or both surfaces.