Abstract: A rotational viscosimeter is used for determining the flow properties of flowable mixtures having coarse grain components; the device includes a pot with a centrally journaled, rotatable cylinder therein wherein the annular gap between the inner cylinder and pot is at least five times greater than the largest particle diameter of the solids located in this annular gap, there is a sealing liquid located in the pot under and around a lower end of the inner cylinder at least up to the lower lip formed thereon. The surface of the inner cylinder and/or the inner surface of the pot beyond the sealing liquid level is roughened or provided with grooves.

Abstract: Described is a pyrotechnic charge as smoke- or combustion charge in the form of separate pressed objects arranged in a case, the improvement comprising the fact that the case (1) for the pressed objects (3) consists of plastic or light metal provided with preset breaking points (2). More specifically, the pyrotechnic charge contains a charge base containing smoke compounds in the form of pressed objects and also contains an igniting charge.

Abstract: A dome-shaped molded component or device for use with an operative element, e.g. a hollow-charge mine, is adapted to be connected at a continuous rim with the operative element. The device comprises a flexible body formed of an elastic material and at least one venting means for venting a cavity defined by the body when the device is placed in its functional or operative position. The device also has a rib arranged on the body for causing the body to deploy from a collapsed introverted inoperative initial position to an extended extroverted, operative position. The body part of the device is compressed under elastic deformation and is held in this position by a retaining unit for applying an external force to the device so that the device is collapsed within the operative element. Upon release of the externally effective force, the rib effects the deployment of the body into its functional or operative position.