Patio blocks and block systems with side surface positioning and retaining structures

1. A patio block comprising:

a block body having opposed top and bottom surfaces, and at least a first side surface, a second side surface, a third side surface and a fourth side surface, each of the at least first, second, third and fourth side surfaces extending from the top surface to the bottom surface;

at least one first size spacer projection positioned along irregularly contoured portions of each one of the at least first, second, third and fourth side surfaces, the at least one first size spacer projection extending outwardly from the at least first, second, third and fourth side surfaces, the at least one first sized spacer projection having a contour;

at least two second size spacer projections positioned along irregularly contoured portions of each one of the at least first, second, third and fourth side surfaces, the at least two second size spacer projections extending outwardly from the at least first, second, third and fourth side surfaces, the first size spacer projection being larger in size than the second size spacer projections;

wherein one of the at least two second sized spacer projections is positioned along at least one of the side surfaces a distance from the other of the at least two second sized spacer projections forming a length between the two second sized spacer projections, the length being sized to accept at least a portion of the contour of the first size spacer projection between the two second size spacer projections.

2. The patio block of claim 1 , wherein the first and second size spacer projections of each side surface extend a partial height of the side surface from the bottom surface toward the top surface of the patio block.

3. The patio block of claim 2 , wherein the first and second size spacer projections of each side surface extend the entire height of the side surface from the bottom surface to the top surface of the patio block.

4. The patio block of claim 1 , further comprising:

a recessed surface positioned along irregularly contoured portions of each one of the at least first, second, third and fourth side surfaces, the recessed surface having a contour,

wherein two second sized spacer projections are positioned along the contour of the recessed surface of at least one of the side surfaces and wherein the length of the distance between the two second sized spacer projections along the recessed surface is sized to accept at least a portion of the contour of the first size spacer projection.

5. The patio block of claim 4 , wherein the distance between the two second sized spacer projections positioned along the recessed surface of at least one of the side surfaces forms a spacer locator that has a contoured surface shaped to accept at least a portion of the contour of the first size spacer projection.

6. The patio block of claim 4 , wherein a portion of the contour of the recessed surface of at least one of the side surfaces extends beyond the side surface and is located outside of the block body.

7. The patio block of claim 4 , wherein the entire contour of the recessed surface of at least one of the side surfaces extends into the block body.

8. The patio block of claim 4 , wherein the length between the two second sized spacer projections along the recessed surface is sized to prevent at least a portion of the contour of the first size spacer projection from contacting at least a portion of the contour of the recessed surface.

9. The patio block of claim 1 , wherein the block body has a fifth and sixth side surface such that the block body has an “L” shape, wherein the patio block has at least one first sized spacer projection and at least two second sized spacer projections positioned along each of the fifth and sixth side surfaces.

10. A patio system comprising:

a plurality of patio blocks, the patio blocks having a block body with opposed top and bottom surfaces, and at least a first side surface, a second side surface, a third side surface and a fourth side surface each extending from the top surface to the bottom surface, each of the at least first, second, third and fourth side surfaces having an irregular contour such that top and bottom edges along the top and bottom surfaces where the at least first, second, third and fourth side surfaces extend also have an irregular contour, at least one first size spacer projection positioned along each one of the at least first, second, third and fourth side surfaces, the at least one first size spacer projection extending outwardly from the at least first, second, third and fourth side surfaces, the at least one first sized spacer projection having a contour; at least two second size spacer projections positioned along each one of the at least first, second, third and fourth side surfaces, the at least two second size spacer projections extending outwardly from the at least first, second, third and fourth side surfaces, the first size spacer projection being larger in size than the second size spacer projections wherein one of the at least two second sized spacer projections is positioned along at least one of the side surfaces a distance from the other of the at least two second sized spacer projections forming a length between the two second sized spacer projections, the length being sized to accept at least a portion of the contour of the first size projection between the two second sized spacer projections; and

wherein when a patio is made with the plurality of patio blocks, the length between the second sized spacers projections receives the first size spacer projection such that when a side surface of a first patio block is laid adjacent to a side surface of a second patio block the first sized spacer projection of the side surface of the first patio block is accepted and retained into the length between the second sized spacer projections of the second patio block preventing displacement of the first patio block relative to the adjacent second patio block and creating a joint between the first patio block and the second patio block, the joint having variable widths along the length of the adjacent portions of the irregularly contoured top edges of the first and second patio block.

11. The patio block system of claim 10 , wherein the plurality of patio blocks have a recessed surface positioned along portions of each one of the at least first, second, third and fourth side surfaces, the recessed surface having a contour, and wherein two second sized spacer projections are positioned along the contour of the recessed surface of at least one of the side surfaces and wherein the length of the distance between the two second sized spacer projections along the recessed surface is sized to accept at least a portion of the contour of the first size spacer projection.

12. The patio block system of claim 11 , wherein the distance between the two second sized spacer projections positioned along the recessed surface of at least one of the side surfaces of the plurality of patio blocks forms a spacer locator that has a contoured surface shaped to accept at least a portion of the contour of the first size spacer projection.

13. The patio block system of claim 11 , wherein a portion of the contour of the recessed surface of at least one of the side surfaces of the plurality of patio blocks extends beyond the side surface and is located outside of the block body.

14. The patio block system of claim 11 , wherein the length between the two second sized spacer projections along the recessed surface of at least one of the side surfaces of the plurality of blocks is sized to prevent at least a portion of the contour of the first size spacer projection from contacting at least a portion of the contour of the recessed surface.

15. The patio block system of claim 10 , wherein the block body of the plurality of patio blocks has a fifth and sixth side surface such that the block body has an “L” shape, wherein the patio block has at least one first sized spacer projection and at least two second sized spacer projections positioned along each of the fifth and sixth side surfaces.

16. A method of making a patio comprising:

providing a plurality of patio blocks, the patio blocks having a block body with opposed top and bottom surfaces, and at least a first side surface, a second side surface, a third side surface and a fourth side surface each extending from the top surface to the bottom surface, each of the at least first, second, third and fourth side surfaces having an irregular contour such that top and bottom edges along the top and bottom surfaces where the at least first, second, third and fourth side surfaces extend also have an irregular contour, at least one first size spacer projection positioned along each one of the at least first, second, third and fourth side surfaces, the at least one first size spacer projection extending outwardly from the at least first, second, third and fourth side surfaces, the at least one first sized spacer projection having a contour, at least two second size spacer projections positioned along each one of the at least first, second, third and fourth side surfaces, the at least two second size spacer projections extending outwardly from the at least first, second, third and fourth side surfaces, the first size spacer projection being larger in size than the second size spacer projections wherein one of the at least two second sized spacer projections is positioned along at least one of the side surfaces a distance from the other of the at least two second sized spacer projections forming a length between the two second sized spacer projections, the length being sized to accept at least a portion of the contour of the first size projection between the two second sized spacer projections; and

forming a patio by positioning the patio blocks with a side surface of a first patio block laid adjacent to a side surface of a second patio block such that the first sized spacer projection of the side surface of the first patio block is accepted and retained into the length between the two second sized spacer projections of the second adjacent patio block preventing displacement of the first patio block relative to the adjacent second patio block and creating a joint between the first patio block and the second patio block, the width of the joint having variable dimensions along the length of the adjacent portions of the irregularly contoured top edges of the first and second patio block.

17. The method of claim 16 , wherein the plurality of patio blocks have a recessed surface positioned along portions of each one of the at least first, second, third and fourth side surfaces, the recessed surface having a contour, and wherein two second sized spacer projections are positioned along the contour of the recessed surface of at least one of the side surfaces and wherein the length of the distance between the two second sized spacer projections along the recessed surface is sized to accept at least a portion of the contour of the first size spacer projection.

18. The method of claim 17 , wherein the distance between the two second sized spacer projections positioned along the recessed surface of at least one of the side surfaces of the plurality of patio blocks forms a spacer locator that has a contoured surface shaped to accept at least a portion of the contour of the first size spacer projection.

19. The method of claim 17 , wherein the length between the two second sized spacer projections along the recessed surface of at least one of the side surfaces of the plurality of blocks is sized to prevent at least a portion of the contour of the first size spacer projection from contacting at least a portion of the contour of the recessed surface.

20. The method of claim 16 , wherein the block body of the plurality of patio blocks has a fifth and sixth side surface such that the block body has an “L” shape, wherein the patio block has at least one first sized spacer projection and at least two second sized spacer projections positioned along each of the fifth and sixth side surfaces.