Abstract: Bolt-type angular gear mechanism (1), comprising angular bolts (3) each with two limbs, which are angled in relation to each other, a first bolt carrier (11), which is rotatable about a first axis (13) and has first bolt receptacles (15), in each of which a first limb (5) of one of the angular bolts (3) is at least partially received, and a second bolt carrier (21), which is rotatable about a second axis (23), which is different from the first axis (13), and has second bolt receptacles (25), in each of which a second limb (7) of one of the angular bolts (3) is at least partially received, so that the first bolt carrier (11) and the second bolt carrier (21) are connected by means of the angular bolts (3), wherein the limbs of the angular bolt (3) have a flattened portion (39), wherein the flattened portion extends in the longitudinal direction of the limb.

Abstract: A protector is provided for a broom such as a concrete broom or the like. The protector of this invention is clamped onto the bristles of a concrete broom or the like to protect the same.

Abstract: Gear mechanism, in particular coaxial gear mechanism or linear gear mechanism, having a toothing system, a tooth carrier with radially oriented guides, teeth which are received in the guides for engagement with the toothing system, the teeth being mounted in the guides such that they can be displaced radially relative to the tooth carrier in the direction of their longitudinal axis, a cam disk for radially driving the teeth, the tooth carrier comprising a first tooth carrier part and a second tooth carrier part.

Abstract: Gear mechanism, in particular coaxial gear mechanism or linear gear mechanism, having a toothing system, a tooth carrier with radially oriented guides, teeth which are received in the guides for engagement with the toothing system, the teeth being mounted in the guides such that they can be displaced radially relative to the tooth carrier in the direction of their longitudinal axis, a cam disk for radially driving the teeth, the tooth carrier comprising a first tooth carrier part and a second tooth carrier part.

Abstract: A protector is provided for a broom such as a concrete broom or the like. The protector of this invention is clamped onto the bristles of a concrete broom or the like to protect the same.

Abstract: The invention relates to a base seal of a dump, in particular a residual salt dump, said seal comprising two layers disposed on top of one another. The upper layer has a mixture of gravel, sand and bentonite or powered clay with a permeability coefficient of k?10?9 m/s and the lower layer has a mixture of sand and bentonite or powered clay with a permeability coefficient of k?5*10?10 m/s.