Blocking-up wedge
OwnerKarsten Jenseninventor
Life of this patent
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Abstract
A blocking-up wedge of the kind used in pairs for the levelling of joists and the like consisting of a prismatic-shaped body, the terminal surfaces of which being triangles, and at least one wedge surface being provided with a relatively great friction profiled formation in such a direction that the mutual displacement of the pair of wedges reducing the distance between the parallel supporting surfaces of the pair of wedges is principally prevented and lateral shifting of the wedges is controlled or prevented.
Claims4
Blocking-up wedges of the kind used in pairs e.g. by the leveling of joists wherein both of said wedges are identical to each other, and each of said wedges consists of a prismatic-shaped body the terminal surfaces of which being triangles, by which at least one wedge surface of each of said wedges offers a relatively great friction in such a direction that the mutual displacement of the pair of wedges reducing the distance between the parallel supporting surfaces of the pair of wedges is mainly prevented, as well as of controls for the prevention of mutual lateral shifts of the wedges,
- wherein said at least one wedge surface comprises serrated portions extending from an upper end to a lower end of said wedge and a plurality of undulating portions extending in a direction transversely of the direction in which said serrated portions extend.
Dependencies are inferred from the claim text.