Examples of Enclosures

These three are, of course, in conflict, and there are a number of possible trade-offs between them. Condition (ii) effectively demands that the enclosure should be a convex point-set, and combined with condition (iii) this leads to the use of the convex hull, which is defined to be the convex point set of smallest volume which contains the original set. 

In this example the point set is the dark curve, and the enclosure is the shaded region. 

Unfortunately, although the convex hull can be computed reasonably efficiently for 2-dimensional configurations, it becomes extremely complex for 3-dimensional ones. 

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Openings in enclosures tops, sides, and bottoms shall comply with the dimensional requirements of the relevant product or machine standards. The restrictions are necessary to prevent objects from entering the product via top or sides and prevent in the event of fire, flaming particles from exiting the bottom of the enclosure. Examples of enclosure opening sizes are ... 

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