A coupling for use in securing a hook-shaped sound part on a behind-the-ear hearing aid consists of a two part connector with a free position in which the parts can be assembled and separated, and a coupled position in which the hook-shaped part can be turned in relation to the hearing aid. A coupling link with a plug-shaped part is inserted in the hearing aid so that the plug-shaped part extends ...

The invention relates to thermosetting compositions consisting of a homogeneous mixture of an ethylenically unsaturated compound, a bismaleimide compound or a bismaleimide containing composition and an acid compound, with optionally further copolymerizable compounds and usual additives.

The rapid pyrolysis of lignocellulosic products, especially forest waste, is conducted in a fluidized bed of hot refractory particles. The pyrolysis products, comprising solid carbonaceous residue (i.e., char), tars and gas, escape from the bed and cross an overheating zone comprising a packed bed contactor supplied by a rainfall of hot refractory particles. The carbonaceous solid residue is then ...

The present invention concerns a revolving door device having arcuate screens arranged on diametrically opposite sides of the passage space constituting part of the revolving door closely adapted to the fixed outer walls of the device. Said screens being connected with each other through a partition wall divided up in three sections having the central section openable. The respective outer section...

The present invention concerns a revolving door device having arcuate screens arranged on diametrically opposite sides of the passage space constituting part of the revolving door closely adapted to the fixed outer walls of the device. Said screens being connected with each other through a partition wall divided up in three sections having the central section openable. The respective outer section...

The present invention concerns a revolving door device having arcuate screens arranged on diametrically opposite sides of the passage space constituting part of the revolving door closely adapted to the fixed outer walls of the device. Said screens being connected with each other through a partition wall divided up in three sections having the central section openable. The respective outer section...

The present invention concerns a revolving door device having arcuate screens arranged on diametrically opposite sides of the passage space constituting part of the revolving door closely adapted to the fixed outer walls of the device. Said screens being connected with each other through a partition wall divided up in three sections having the central section openable. The respective outer section...

The present invention concerns a revolving door device having arcuate screens arranged on diametrically opposite sides of the passage space constituting part of the revolving door closely adapted to the fixed outer walls of the device. Said screens being connected with each other through a partition wall divided up in three sections having the central section openable. The respective outer section...

The invention refers to a gearbox for vehicles comprised of an ingoing axle (4) and a concentric main axle (6), which incases the outgoing axle (11) of the gearbox. The ingoing axle (4) can be alternatively coupled with one of two pinions (16,18) which each intervene into a lateral gear wheel (17 repectively 19) on a lateral axle (12). The mentioned lateral axle (12) also supports a number of othe...

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