Concrete building blocks

A structural wall comprising at least one of a first monolithic concrete building block and at least one of a second monolithic concrete building block, each block of a size requiring that it be lifted by a powered overhead lifting device, said wall comprising:

• at least one first block, said first block having a first end portion and a substantially identical second end portion, a central portion between said end portions, a first side, a second side, a top and bottom;
• said first end portion having a generally semi-cylindrical first end surface, a first connector pin projecting upwardly from said top, a complementary first connector socket entering into said bottom, and a vertical first axis of generation about which the first pin, the first socket, and the first end surface are generated;
• said second end portion having a generally semi-cylindrical second end surface, a second connector pin projecting upwardly from said top, a complementary second connector socket entering into said bottom, and a vertical second axis of generation about which the second pin, the second socket, and the second end surface are generated;
• said central portion having first and second side surfaces which extend between the end surfaces of the first block, and said central and end portions providing the block with a generally oblong shape:
• said block including at least one well located in the top of each first block;
• means within each first block forming an upwardly directed lifting eye within each said well;
• at least one second monolithic concrete building block of a size requiring that it be lifted by a powered overhead lifting device, each said second block having a substantially cylindrical shape and having a top, a bottom, a sidewall and a connector pin, of the same size and shape as each pin of each first block, projecting from said top, a complementary connector socket of the same size and shape as each socket of each first block, entering said bottom, a vertical axis of generation about which the connector pin of the second block and the connector socket of the second block are generated, at least one well formed in the top of each said second block, and means within each said second block forming an upwardly directed lifting eye within each said well;
• and
• wherein the wall is formed from at least one first block and at least one second block by placing one block atop the other block such that a socket of the top block engages a pin of the block below it.

A structural wall comprising:

• at least one first block having a first end portion and a substantially identical second end portion, a central portion between said end portions, a first side, a second side, a top and a bottom;
• said first end portion having a generally semi-cylindrical first end surface, a first connector pin projecting upwardly from said top, a complementary first connector socket entering into said bottom, and a vertical first axis of generation about which the first pin, the first socket, and the first end surface are generated;
• said second end portion having a generally semi-cylindrical second end surface, a second connector pin projecting upwardly from said top, a complementary second connector socket entering into said bottom, and a vertical second axis of generation about which the second pin, the second socket, and the second end surface are generated;
• at least one second block having a first end portion and a substantially identical second end portion, a central portion between said end portions, a first side, a second side, a bottom, said first side, said second side, said bottom, and said end portions defining a hollow interior;
• each said first end portion of each said second block having a generally semi-cylindrical first end surface surrounding said hollow interior, a first connector socket, of the same shape and size as each socket of each first block, entering the bottom and a vertical first axis of generation about which the first socket and first end surface are generated;
• and
• each said second end portion of each said second block having a generally semi-cylindrical second end surface surrounding said hollow interior, a second connector socket, of the same shape and size as each socket of each first block, entering into said bottom, and a vertical second axis of generation about which the second socket, and the second end surface are generated;
• wherein the wall is formed by placing at least one second block atop of at least one first block such that at least one socket of the second block engages at least one pin of the first block.

A monolithic concrete building block of a size required that it be lifted by a powered overhead lifting device, comprising:

• substantially identical first and second end portions, a central portion between said end portions, a first side, a second side, a top and a bottom;
• said first end portion having a generally semi-cylindrical first end surface, a first connector pin projecting upwardly from said top, a complementary first connectory socket entering into said bottom, and a vertical first axis of generation about which the first pin, the first socket, and the first end surface are generated;
• said second end portion having a generally semi-cylindrical second end surface, a second connector pin projecting upwardly from said top, a complementary second connector socket entering into said bottom, and a vertical second axis of generation about which the second pin, the second socket, and the second end surface are generated;
• said central portion having first and second side surfaces which extend between the end surfaces of the block, and said central end portions together providing the block with a generally oblong shape;
• said block including at least two wells located at the top, wherein one said well is located in each of said pins;
• and
• means within the block forming an upwardly directing lifting eye within each said well.

A structural wall comprising a plurality of monolithic concrete building blocks, each of a size requiring that it be lifted by a powered overhead lifting device, each said concrete block comprising:

• a first end portion and a substantially identical second end portion, a central portion between said end portions, a first side, a second side, a top and a bottom;
• said first end portion having a generally semi-cylindrical first end surface, a first connector pin projecting upwardly from said top, a complementary first connector socket entering into said bottom, and a vertical first axis of generation about which the first pin, the first socket and the first end surface are generated;
• said second end portion having a generally semi-cylindrical second end surface, a second connector pin projecting upwardly from said top, a complementary second connector socket entering into said bottom, and a vertical second axis of generation about which the second pin, the second socket, and the second end surface are generated;
• said central portion having first and second side surfaces which extend between the end surfaces of the block, and said central and end portions providing the block with a generally oblong shape;
• said block including at least two wells located in the top of the block, wherein one said well is located in each of said pins;
• and
• means within the block forming an upwardly directing lifting eye within each said well;
• wherein one concrete block is mounted atop another concrete block and one of its said sockets engages a pin on the block below it.