| CPC B26B 19/20 (2013.01) [B26B 19/3886 (2013.01)] | 15 Claims |

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1. A spacing assembly, comprising:
a support body comprising a first guide track that extends in a spacing direction between a first end and a second end;
a moveable body received in the first guide track, wherein the first guide track allows movement of the moveable body in the spacing direction and provides a lateral restriction to movement of the moveable body in a lateral direction perpendicular to the spacing direction; and
an adjuster comprising a first spiral channel and a second spiral channel arranged about a common point on a surface of the adjuster;
wherein the support body comprises a first lug that is received within the first spiral channel; and the moveable body comprises a second lug that is received within the second spiral channel, such that the adjuster is rotatable about the common point by sliding the first spiral channel and the second spiral channel on the first lug and second lug, respectively;
wherein the first spiral channel and the second spiral channel extend radially outwards in a curve of increasing radius from the common point, such that rotation of the adjuster will force the first lug and the second lug to move to different radial positions from the common point, thereby driving the adjuster and the moveable body, under the lateral restriction of the first guide track, to move relative to the support body in the spacing direction.
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