Patent ID: 11927048
Assignee: ALP SUPPLY, INC.
Field: Civil engineering (Other fields)
Classification: CPC E  B  Y | IPC B  E

Claim 0:
1. A pair of stackable shims comprising:
(a) a first, planar shim having a top surface and a bottom surface, wherein the top surface has a plurality of projections extending outward and creating an upper surface and a height of each of the projections is substantially the same, wherein at least two of the plurality of projections are rotationally offset with respect to one another, wherein an area of the upper surface covers from 30% to 50% of an area of the top surface, with each of the projections characterized by a shape and a height, and wherein the bottom surface has a plurality of recesses extending inward, whereby a recess is positioned beneath each projection, with each recess having a shape approximately the same as the projection overlying such recess and a uniform depth approximately the same as the height of the projection overlaying such recess, and a first line bisecting the first shim into first and second halves, and wherein the first and second halves of the first shim are reverse images of each other, with respect to the first bisecting line;
(b) a second, planar shim having a top surface and a bottom surface, wherein the top surface of the second shim is identical to the top surface of the first shim and the bottom surface of the second shim is identical to the bottom surface of the first shim, and a second line bisecting the second shim into first and second halves, and wherein the first and second halves of the second shim are reverse images of each other, with respect to the second bisecting line;
(c) wherein the first shim and the second shim can interlock, with the bottom surface of the first shim overlaying the top surface of the second shim, with the first line bisecting the first shim aligned with the second line bisecting the second shim; and
(d) wherein the shape of the projections extending from the top surface of the first shim are polygonal, and wherein the projections extending from the top surfaces of the first shim and the second shim have sides substantially perpendicular to the top surface, and wherein (i) at least one of the sides of the projections is perpendicular to an angle of from 0° to 60°, (ii) at least one of the sides of the projections is perpendicular to an angle of from 60° to 120°, (iii) at least one of the sides of the projections is perpendicular to an angle of from 120° to 180°, (iv) at least one of the sides of the projections is perpendicular to an angle of from 180° to 240°, (v) at least one of the sides of the projections is perpendicular to an angle of 240° to 300°, and (vi) at least one of the sides of the projections is perpendicular to an angle of 300° to 360°.