Abstract: A breech for a dual-component cartridge with a breech plug with two sealing bolts which can be inserted into the two mutually separated outlet openings at the cartridge throat and seal these openings tightly, and with a retaining nut that can be screwed onto the cartridge throat. This nut can turn relative to the breech plug and can be locked to it in an axial direction and released therefrom. In order that the breech plug will be held by the retaining nut without additional parts and so that it can again be easily separated from it, between the retaining nut and the breech plug a manual-detachable snap-in connection is formed by the relative movement of the breech plug in the axial direction.

Abstract: A cartridge with at least one material receptacle chamber, an axially displaceable piston arranged in the material receptacle chamber and a piston restraint for preventing the at least one piston from being pressed out of the pertinent material receptacle chamber. The piston restraint consists of an elastic restraining disk that is realized in the form of a disk spring and positively and/or non-positively held on the inner wall of the at least one material receptacle chamber.

Abstract: The invention relates to an ejection device for a cartridge which comprises two chambers (1, 2) arranged concentrically to one another. Each chamber (1, 2) is provided with a piston (4, 5). The ejection device also comprises ejection rods which can be shifted in the direction of the outlet (3) of the cartridge. A cap (6) is provided which can be axially locked with the cartridge. The ejection rods are guided through said cap (6). The external ends of the ejection rods for the annular piston (5) are connected to one another via a cover plate (11). A threaded spindle (9) is supported at the cover plate (11). Said threaded spindle (9) extends through a threaded tapped hole (8) of the cap (6) and serves as an ejection rod for the middle piston (4).

Abstract: The invention relates to a cartridge piston made of a material which is sensitive to the contents of the cartridge, comprising a covering disk which is made of a material which is not sensitive to the contents of the cartridge and arranged on the surface of the piston, having a structure which is adapted to one of the cross-sectional profiles of the surface of said piston. The area of the piston facing the wall of the cartridge is embodied as a V-shaped cross-sectional annular groove forming a sealing lip on the edge thereof. In order to protect the piston from the effects of the contents of the cartridge and to guarantee the sealing function of the piston even when the cartridge is curved, the outer diameter of the covering disk is smaller than the edge of the piston which forms the sealing lip and the edge of the covering disk is sealingly connected to the surface of the piston.

Abstract: The invention relates to a cartridge piston (1, 1A) made of a material which is sensitive to the contents of the cartridge, comprising a covering disk (9, 9A) which is made of a material which is not sensitive to the contents of the cartridge and arranged on the surface (5) of the piston, having a structure which is adapted to one of the cross-sectional profiles (5) of the surface of said piston. The area of the piston (1, 1A) facing the wall of the cartridge is embodied as a V-shaped cross-sectional annular groove (2) forming a sealing lip on the edge thereof. In order to protect the piston from the effects of the contents of the cartridge and to guarantee the sealing function of the piston even when the cartridge is curved, the outer diameter of the covering disk (9, 9A) is smaller than the edge of the piston (1, 1A) which forms the sealing lip (3) and the edge of the covering disk (9, 9A) is sealingly connected to the surface (5) of the piston.

Abstract: A breech for a dual-component cartridge with a breech plug with two sealing bolts which can be inserted into the two mutually separated outlet openings at the cartridge throat and seal these openings tightly, and with a retaining nut that can be screwed onto the cartridge throat. This nut can turn relative to the breech plug and can be locked to it in an axial direction and released therefrom. In order that the breech plug will be held by the retaining nut without additional parts and so that it can again be easily separated from it, between the retaining nut and the breech plug a manual-detachable snap-in connection is formed by the relative movement of the breech plug in the axial direction.

Abstract: A grid plate for stabilizing natural ground comprises a base and side walls formed in one piece with the base which form chambers open to the top being in the form of regular polygons, the base having water outlets, the chambers being in the form of sectional chambers which are laterally open on their periphery which form closed chambers with laterally open sectional chambers of adjacent grid plates complementary thereto when two similar grid plates are assembled and the ends of side walls of both grid plates forming the sectional chambers come into contact, the side walls having flattenings in the regions of contact, the flattenings of complementary chambers lying flat on one another when two similar grid plates are joined together.

Abstract: Honeycomb lawn plates for seeding surfaces have honeycombed chambers open at the top and hexagonal in cross-section. So that peripheral chamber walls do not really contact one another, peripherally open chambers are provided on the plate edges, the cross-section of which is less than the cross-section of the hexagonal chambers. So that stable plate edges are obtained, the cross-section of the peripherally open chambers is, at maximum, half as large as the cross-section of the hexagonal chambers. In addition, peripherally closed chambers are located between the peripherally open chambers. On opposite plate edges, the change from peripherally open chambers to peripherally closed chambers alternates, as a result of which the peripherally open chambers are sealed by the peripheral chamber walls of the peripherally closed chambers of the adjacent plate.

Abstract: A grid plate for seeding surfaces, having cells open at the top comprised of cell walls, each of the cells having openings at the bottom which enable root growth into earth below the grid plate, the cell walls between adjacent cells forming nodal points, wall connections at right angles to the cell walls at the bottom of at least some nodal points each having a range limited to the region of a respective nodal point.

Abstract: The invention relates to a cartridge for paste-like substances, including a tubular cartridge body closed at one end by a front end wall having an outlet nipple defining an outlet opening; a plunger for pressing such a paste-like substance through the outlet opening, the plunger being inserted into the open rear end of the cartridge body, wherein an outer periphery of the plunger is in sealing contact with an inner wall of the cartridge body; a journal protruding from and fixed to the plunger, the journal being adapted to penetrate the outlet opening when the plunger rests against the front end wall, the journal being at least the same length as the outlet opening; and at least one continuous longitudinal axial groove formed in at least one of an outer peripheral surface of the journal and an inner wall of the outlet opening, wherein the plunger is adapted to have its entire front surface contact the front end wall of the cartridge upon forcing the journal through the outlet opening.

Abstract: A grid plate is comprised of a base and vertical one piece side walls which form chambers open to the top, the bottom of each chamber being provided with a drainage hole and the bottom having projections on a plate rim which protrude beyond the rim of the grid plate and grip the bottom area of an adjacent grid plate, the plate rim of the grid plate intersecting at least every second rim-bordering chamber, the chambers forming additional chambers with side walls of adjacent grid plates and the side walls of a pair of grid plates only coming into contact along their vertical edges.