Dowels harvested from wood including portions from adjacent growth rings that are oriented so that the dowels expand in a horizontal direction, relative to its longitudinal axis, when exposed to moisture. Assembly systems can incorporate the dowels as fasteners, dowels and the assembly systems marked to allow for orienting the dowels for expansion in a predetermined direction relative to the assembly system. Wall systems made of contiguous wall panels assembled with dowels, where the dowel paths are arranged in configurations for stabilizing the assembled wall system. The wall panel tops can include pairs of dowel paths angled toward each other. The central wall panel bottoms can include a dowel path along a longitudinal axis, while the flanking wall panel bottoms can include dowel paths extending toward the central wall panel. The wall system can include the markings for orienting marked and directionally-expanding dowels.

A joining system for mechanically joining two materials is disclosed. A receiving device having a sleeve which surrounds an axis of extension and which is designed to receive a pin, and a plug-in device having the pin, where the joining system is configured such that, when the pin is inserted in the sleeve, the pin is clamped to the sleeve in the axial direction in relation to the axis of extension on account of a spring element of the receiving device being pushed radially against a belly region of the pin.

A joining system for mechanically joining two materials is disclosed. A receiving device having a sleeve which surrounds an axis of extension and which is designed to receive a pin, and a plug-in device having the pin, where the joining system is configured such that, when the pin is inserted in the sleeve, the pin is clamped to the sleeve in the axial direction in relation to the axis of extension on account of a spring element of the receiving device being pushed radially against a belly region of the pin.

Amorphous calcium carbonate is included in a fire-resistant inorganic mortar system for a fire-resistant chemical fastening of anchors and post-installed reinforcing bars in mineral substrates. The system includes a curable aluminous cement component A and an initiator component B for initiating the curing process. The component A includes at least one blocking agent selected from the group of phosphoric acid, metaphosphoric acid, phosphorous acid and phosphoric acids, at least one plasticizer and water. The component B includes an initiator, at least one retarder, at least one mineral filler and water. Moreover, amorphous calcium carbonate in a fire-resistant inorganic mortar increases load values. Also, a method is used for a fire-resistant chemical fastening of anchors and post-installed reinforcing bars in mineral substrates, such as structures made of brickwork, concrete, pervious concrete or natural stone.

The invention relates to dowels harvested from wood including portions from adjacent growth rings that are oriented so that the dowels expand in a horizontal direction, relative to its longitudinal axis, when exposed to moisture. Assembly systems can incorporate the dowels as fasteners, dowels and the assembly systems marked to allow for orienting the dowels for expansion in a predetermined direction relative to the assembly system. Wall systems made of contiguous wall panels assembled with dowels, where the dowel paths are arranged in configurations for stabilizing the assembled wall system. The wall panel tops can include pairs of dowel paths angled toward each other. The central wall panel bottoms can include a dowel path along a longitudinal axis, while the flanking wall panel bottoms can include dowel paths extending toward the central wall panel. The wall system can include the markings for orienting marked and directionally-expanding dowels.

The invention relates to dowels harvested from wood including portions from adjacent growth rings that are oriented so that the dowels expand in a horizontal direction, relative to its longitudinal axis, when exposed to moisture. Assembly systems can incorporate the dowels as fasteners, dowels and the assembly systems marked to allow for orienting the dowels for expansion in a predetermined direction relative to the assembly system. Wall systems made of contiguous wall panels assembled with dowels, where the dowel paths are arranged in configurations for stabilizing the assembled wall system. The wall panel tops can include pairs of dowel paths angled toward each other. The central wall panel bottoms can include a dowel path along a longitudinal axis, while the flanking wall panel bottoms can include dowel paths extending toward the central wall panel. The wall system can include the markings for orienting marked and directionally-expanding dowels.

An airfoil includes a body that has rib nodes that each define a node cavity therein. A cover panel is carried on the body over the rib nodes. The cover panel includes tabs that project into the node cavities. Plugs are disposed in the node cavities and pinch the tabs against the node cavities to lock the cover panel on the body.

A hand-held power tool has a tool socket 2, a drive 5, 6 for driving the tool socket 2, and a housing 19 in which the drive 5, 6 is accommodated. A stationary part 14 of the drive 5 is connected by means of at least one detachable clamped connection 21 to at least one element 19, whereby the element 19 is the housing 19 or another stationary part of the drive 5, 6. The clamped connection 21 has a cylindrical pocket 22 in the one stationary part 14, a bushing 27 that is made of plastic and that is inserted into the cylindrical pocket 22, and it has a screw 30 that is screwed into the bushing 27.

A hand-held power tool has a tool socket 2, a drive 5, 6 for driving the tool socket 2, and a housing 19 in which the drive 5, 6 is accommodated. A stationary part 14 of the drive 5 is connected by means of at least one detachable clamped connection 21 to at least one element 19, whereby the element 19 is the housing 19 or another stationary part of the drive 5, 6. The clamped connection 21 has a cylindrical pocket 22 in the one stationary part 14, a bushing 27 that is made of plastic and that is inserted into the cylindrical pocket 22, and it has a screw 30 that is screwed into the bushing 27.