Connection device
AssigneePuku Limited
InventorSimon Gary Moore
Life of this patent
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Abstract
According to one aspect of the present invention there is provided an adjustable mechanism for connecting two or more shafts, including at least a first shaft having an external surface with an outer diameter and a second shaft which is hollow at a first end, wherein a spring is anchored to the first end of the second shaft, the spring having an inner diameter of similar dimensions to the outer diameter of the first shaft, the spring configured such that when a force is applied to the spring its inner diameter is greater than the outer diameter of the first shaft so that the second shaft can move over the first shaft to a desired position relative to the first shaft, and when the force is no longer applied to the spring it is biased to return to its original inner diameter to bear against the external surface of the first shaft.
Claims21
A mechanism for connection of two or more shafts in an adjustable position relative to one another, comprising
- at least a first shaft having at least a portion which is a rigid tube having an external surface with an outer diameter, and
- a second shaft having at least a portion which is a rigid tube and which is hollow at least in a portion at a first end,
- wherein a spring is anchored to the first end of the second shaft,
- the spring having an inner diameter of similar dimensions to the outer diameter of the first shaft,
- the spring configured such that when a force is applied to the spring its inner diameter is greater than the outer diameter of the first shaft enabling the second shaft to be moved over the first shaft to a desired position relative to the first shaft, said hollow portion of the second shaft receiving at least a portion of said first shaft, and
- when the force is no longer applied to the spring it is biased to return to its original inner diameter to bear against the external surface of the first shaft,
- and wherein the mechanism includes
- a second spring anchored to an end of the first shaft, the second spring having an outer diameter of similar dimensions to the hollow portion of the second shaft
- to inhibit rotation of the shafts relative to one another when in the desired position.
A mechanism for connection of two or more shafts in an adjustable position relative to one another, comprising:
- at least a first shaft comprising a rigid tube, and
- a second shaft comprising a rigid tube having a hollow first end, the hollow first end having an internal surface with an inner diameter,
- wherein a spring is anchored to an end of the first shaft,
- the spring having an outer diameter of similar dimensions to the inner diameter of the second shaft,
- the spring configured such that when a force is applied to the spring its outer diameter is less than the inner diameter of the second shaft enabling the second shaft to be moved over the spring to a desired position relative to the first shaft, and
- when the force is no longer applied to the spring it is biased to return to its original outer diameter to bear against the internal surface of the second shaft, and
- wherein the mechanism for connection comprises a device to inhibit rotation of the shafts relative to one another when in the desired position.
A mechanism for connection of two or more shafts in an adjustable position relative to one another, comprising
- at least a first shaft comprised of a rigid tube having an external surface with an outer diameter, and
- a second shaft comprising a rigid tube having a hollow portion at least at a first end, the hollow portion having an internal surface with an inner diameter,
- wherein a first spring is anchored to an end of the first shaft,
- the first spring having an outer diameter of similar dimensions to the inner diameter of the first end of the second shaft,
- the first spring configured such that when a force is applied to the first spring its outer diameter is less than the inner diameter of the first end of the second shaft, and
- wherein a second spring is anchored to the first end of the second shaft,
- the second spring having an inner diameter of similar dimensions to the outer diameter of the first shaft,
- the second spring configured such that when a force is applied to the second spring its inner diameter is greater than the outer diameter of the first shaft enabling the second shaft to be moved over the first shaft to a desired position relative to the first shaft, and
- when the force is no longer applied to the spring it is biased to return to its original inner diameter to bear against the external surface of the first shaft.
Dependencies are inferred from the claim text.