An attachment system

A connection joint for attaching a first part to a second part, the joint comprising:

• at least one first element;
• at least one second element;
• at least one first washer between the first and second elements;
• an attachment shaft that extends through openings in the first and second elements, and the washer(s) such that the first and second elements and the washer(s) form an arrangement of components;
• wherein the attachment shaft defines a first axis substantially centrally located along a length of the attachment shaft, and the first element, the second element, and the washer(s) are rotatable about the first axis;
• wherein the at least one first washer comprises a curved region that slidably and rotatably nests with a complimentary curved region of the at least one first element, the at least one second element, or of a second, adjacent washer;
• wherein the first element or the second element, or both of the first and second elements, and at least one adjacent washer located between the first and second elements, comprises an enlarged opening comprising a width or diameter greater than a diameter of the attachment shaft to allow the first element, or the second element, or both of the first and second elements to rotate about a second axis and a third axis to adopt various positions relative to the other, the second and third axes being perpendicular to the first axis and to each other;
• and
• wherein the joint further comprises a clamping system that engages with the attachment shaft and comprises a pair of clamping members, at least one of which is moveable toward and away from the other clamping member to clamp the components of the joint together in a locked position, and to unclamp the components in an unlocked position in which the first element or the second element is moveable about the first, second and third axes.

A connection joint to adjustably attach a first part to a second part, wherein the joint comprises:

• a first washer pair and a second washer pair, wherein each pair comprises a first washer comprising a substantially curved region and a second washer comprising a complimentary curved region, such that each washer in a washer pair slidably and rotatably nests with the other washer in the same washer pair, and wherein the first part is adjacent at least one of the first and second washer pairs and the second part is located between the first and second washer pairs;
• an attachment shaft comprising a length that extends through openings provided in the first and second washers of each washer pair and through the first and second parts, wherein the attachment shaft is snugly and slidably received within the opening of the first part and each first washer and wherein the openings of the second washers and the second part have a diameter sufficiently larger than the diameter of the attachment shaft such that the second washers and the second part are tiltable relative to the attachment shaft or the first part and are slidable in a direction substantially perpendicular to the length of the attachment shaft;
• and
• a clamping system to clamp the washers, and first and second parts of the joint together in a locked position, and to unclamp the washers, and first and second parts in an unlocked position in which the second part is moveable about the first, second and third axes.

A connection joint for attaching a first part to a second part, the joint comprising:

• a first element, a second element and at least one washer between the first and second elements,
• wherein each of the first and second elements and the at least one washer comprises an opening;
• wherein the connection joint also comprises an attachment shaft that passes through the openings of the first and second elements and the at least one washer and that comprises a length defining a first axis;
• wherein the second element comprises a curved region and the at least one washer comprises a complimentary curved region such that the curved region of the washer nests within the curved region of the second element, and
• wherein the openings of the washer and the connection joint are larger than a diameter of the attachment shaft to provide a sloppy fit between the washer and the second element, and the attachment shaft, such that at least one of the first and second elements can pivot about the first axis and a second axis and a third axis, the second and third axes being substantially perpendicular to the first axis and to each other.