Abstract: An anchoring assembly for attachment to a base material having a body with a hollow insertion portion with an open end and an expandable portion positioned behind said open end, an explosive cartridge movably housed within said insertion portion near to said open end and capable of moving from said insertion portion to said expandable portion when forces are applied thereto, and a firing pin housed within said body behind said cartridge for igniting said cartridge when said cartridge is moved from said insertion portion to said expandable portion, upon ignition causing an explosive discharge which outwardly deforms said expandable mid-section against said base material. Such assemblies provide anchorage to remote objects, when shot from a gun or rifle, and allow for attachment of ropes, hooks, ladders and other devices for firemen or mountain climbers.

Abstract: For dispersing of rioters, an ammunition is used which includes a plurality of pieces of ice, which preferably, have a spherical shape and are fired at rioters by a firing equipment.

Abstract: A tensile stress in a reinforcing member of reinforced concrete is measured by reducing an initial tensile force in the reinforcing member substantially to zero, and measuring at this moment a tensile stress produced in an actuating unit with multiplying of the thus measured tensile stress by a cross sectional area of the actuating unit.

Abstract: A supporting element is firmly attachable to a structure by detonating an explosive charge which is placed behind a body projection displaceable by an explosion of the charge to and into firm bond with the structure.

Abstract: Changes in linear dimension of objects are determined by measuring strains caused in an electrical resistance strain gauge which is attached to an elongated element with a high modulus of elasticity provided on at least one end of an elongated body with a low modulus of elasticity extending in the direction of linear dimension of the object.