초록 ▼

The invention is a composite masonry block having a front surface and a back surface which are adjoined by first and second side surfaces, as well as a top surface and a bottom surface. Each of the side surfaces has an inset extending from the block top surface to the block bottom surface. The block

The invention is a composite masonry block having a front surface and a back surface which are adjoined by first and second side surfaces, as well as a top surface and a bottom surface. Each of the side surfaces has an inset extending from the block top surface to the block bottom surface. The block top surface has one or more protrusions positioned adjacent the first and second insets on the block top surface. The block also has a protrusion which has an angled side wall, the angle being at least about 20° from vertical. The protrusion is positioned on the block so that it will mate with any opening of an adjacently positioned course. In use, the blocks may be stacked to provide an interlocking structure wherein the protrusions of one block interfit or mate within the insets of another block.

대표청구항 ▼

The invention is a composite masonry block having a front surface and a back surface which are adjoined by first and second side surfaces, as well as a top surface and a bottom surface. Each of the side surfaces has an inset extending from the block top surface to the block bottom surface. The block

The invention is a composite masonry block having a front surface and a back surface which are adjoined by first and second side surfaces, as well as a top surface and a bottom surface. Each of the side surfaces has an inset extending from the block top surface to the block bottom surface. The block top surface has one or more protrusions positioned adjacent the first and second insets on the block top surface. The block also has a protrusion which has an angled side wall, the angle being at least about 20° from vertical. The protrusion is positioned on the block so that it will mate with any opening of an adjacently positioned course. In use, the blocks may be stacked to provide an interlocking structure wherein the protrusions of one block interfit or mate within the insets of another block. first and second shaft ends, is completely contained and supported within the interior of the tank; a non-sparking motor operatively connected to the shaft, the motor being located within the tank and being arranged for submersion in the hazardous substance when the tank is loaded; and a conduit, connected to the non-sparking motor, for transmitting power to the non-sparking motor. 13. An apparatus for containing a load of substance including liquids and solids, a top surface of the load defining a load level, the apparatus comprising: a tank for containing the load of substance, the tank including a tank bottom and side walls; at least one shaft located in the tank and extending over at least a portion of the tank bottom between the side walls, the shaft having first and second shaft ends, and the side walls of the tank being imperforate in areas adjacent the first and second shaft ends such that the entire shaft, including the shaft ends, is completely contained within the interior of the tank; at least one pushing surface connected to the shaft, for mixing substances within the tank when the shaft is moved; and a motor operatively connected to the shaft for moving the shaft, the motor being located within the tank beneath the load level and being submerged in at least a portion of the substance when the tank is loaded. 14. An apparatus as claimed in claim 13, wherein said non-sparking motor is a hydraulic motor and wherein the apparatus further includes hydraulic tubing for transmitting hydraulic fluid to the hydraulic motor. 15. An apparatus as claimed in claim 14, wherein the tank includes a manway collar and said hydraulic lines pass through said manway collar. 16. An apparatus for containing a load of substance including liquids and solids, a top surface of the load defining a load level, the apparatus comprising: a tank for containing the load of substance and including a