Interlocking building blocks and system using the same

An interlocking building block comprising:

• a pair of spaced sidewalls, and
• first and second end walls spaced from each other and joined to said sidewalls, said block having upper and lower surfaces, each of said upper and lower surfaces having a first half lying on one side of a lateral centerline of the block and a second half lying on the other side of the lateral centerline, said first half carrying an "h" shaped, vertically extending projection having a web joining a first flange to a shorter second flange, said web being positioned laterally across said surface and being positioned adjacent to said first end wall, said flanges being positioned longitudinally relative to said block, said first half carrying an "H" shaped, vertically oriented recess having a web portion adjoining a first flange portion to a second flange portion, said web portion being positioned laterally across said surface and spaced away from said web, said flange portions being positioned longitudinally relative to said block, said first end wall having at least one longitudinally projecting tongue and one longitudinally extending groove, said tongue being vertically oriented and said groove being vertically oriented, said tongue and groove being positioned on said first end face so that the tongue and groove on said end face is complementary to and engageable with a respective groove and tongue on an abutting first end face of an identical block that is longitudinally aligned with said building block, said projection and recess on said first half of said block being shaped and positioned so that they are complementary to and engageable with a respective projection and recess on an abutting surface of an identical block that is longitudinally offset by one-half the length by said building block,
• the second half of each of said upper and lower surfaces further comprising an "L" shaped, vertically extending projection and a complementary "L" shaped recess, one of the flanges of said "L" shaped member being positioned adjacent said second end face, said "L" shaped flange and "L" shaped recess being positioned and shaped so that they are complementary to and engageable with a respective "L"-shaped projection and "L"-shaped recess on an abutting second half of a surface of an identical block that is rotated 90.degree. about a vertical axis and 180.degree. about a longitudinal, horizontal axis with respect to said building block,
• said block further carrying a pair of spaced, vertically extending grooves adjacent to said second half of said surfaces, said grooves being spaced to receive a longitudinally extending tongue of an abutting first end face of an identical block.

An interlocking building block comprising:

• a pair of spaced sidewalls,
• first and second end walls joining said sidewalls and being spaced from each other, each of said end walls having respective first and second end faces, said end faces each having at least one longitudinally projecting tongue and one longitudinally recessed groove, said tongue and groove being positioned at identical locations on said first and second end faces and further being positioned so that the tongue and groove on each of said faces is complementary to and engages with a respective groove and tongue on an abutting face of an identical block that is longitudinally aligned with said building block, said block having identical upper and lower surfaces, each of said surfaces carrying a pair of vertically extending projections and adjoining vertically recessed recesses, one of said vertically extending projections and adjoining recesses on each of said upper and lower surfaces forming a first set, the other of said vertically extending projections and adjoining vertically extending recesses on each of said upper and lower surfaces forming a second set, the first set of projections and recesses being shaped and positioned so that the projections and recesses of said first set is complementary to and engages with a respective pair of projections and recesses on an abutting surface of an identical block that is longitudinally offset by a distance greater than one-half the length of said block, the second set of projections and recesses being different from said first set, said second set of projections and recesses being shaped and positioned so that the projections and recesses of said second set is complementary to and engages with a respective pair of projections and recesses on an opposing and abutting surface of an identical block that is longitudinally offset by less than one-half the length of said block.

An interlocking building block comprising:

• a pair of spaced sidewalls, and
• first and second end walls spaced from each other and joined to said sidewalls, said block having upper and lower surfaces carrying an "h" shaped, vertically extending projection having a web joining a first flange to a shorter second flange, said web being positioned laterally across said surfaces and being positioned adjacent to said first end wall and said flanges being oriented orthogonally relative to said first end wall, said upper and lower surfaces carrying an "H" shaped vertical recess having a web portion joining a first flange portion to a second flange portion, said web portion being spaced away from said web and positioned laterally across said surfaces adjacent to said second end wall, said flange portions being oriented orthogonally relative to said second end wall, said first end wall having at least one orthogonally projecting tongue and one orthogonally extending groove, said tongue being vertically oriented and said groove being vertically oriented, said tongue and groove being positioned on said first end face so that the tongue and groove on said end face is complementary to and engageable with a respective groove and tongue on an abutting first end face of an identical block that is longitudinally aligned with said building block, said projections and recesses on the upper and lower surfaces of said block being shaped and positioned so that they are complementary to and engageable with a respective projection and recess on an abutting surface of an identical block, said second end face being substantially flat.

An interlocking pilaster building block comprising:

• a first pair of spaced sidewalls, and
• a first pair of first and second end walls joining said sidewalls and being spaced from each other, each of said end walls having respective first and second end faces, said block having first upper and lower surfaces each carrying a pair of vertically extending projections and adjoining vertically recessed recesses, said projections and recesses being shaped and positioned so that one of said pair of projections and recesses is complementary to and engages respective projections and recesses on an abutting surface of an identical block that is longitudinally offset by one-half the length of said block,
• each of said end faces including at least one longitudinally projecting tongue and one longitudinally recessed groove, said tongues and grooves being positioned at substantially identical locations on said first and said second end faces and further being positioned so that the tongue and groove on each of said end faces is complementary to and engages a respective groove and tongue on an abutting end face of an identical block that is longitudinally aligned with said building block,
• a second pair of spaced sidewalls, and
• a second pair of first and second end walls joining said second pair of sidewalls and being spaced from each other, one of said sidewalls of said second pair of spaced sidewalls being joined to and integral with one of said sidewalls of said first pair of spaced sidewalls, said second block having second upper and lower surfaces, each of said second upper and lower surfaces carrying recesses that are complementary to and engageable with the projections on an abutting surface that is identical to said first upper and lower surfaces.