Heat-resistant material with a foam structure made from oxazolidone and isocyanurate polymers. It contains hollow or porous fillers dispersed in the polymers.

A night vision gunsight providing an intensified image of an external scene and an image of an illuminated reticle (13,88) superimposed on the user's (14) direct view of the external scene through the sight. The sight utilizes an eyepiece (39) through which the user (14) views the external scene directly and which also incorporates an internal curved surface (57) possessing both light reflecting a...

A night vision gunsight providing an intensified image of an external scene and an image of an illuminated reticle (13,88) superimposed on the user's (14) direct view of the external scene through the sight. The sight utilizes an eyepiece (39) through which the user (14) views the external scene directly and which also incorporates an internal curved surface (57) possessing both light reflecting a...

The invention relates to essentially anhydrous crystalline cefadroxil whose water content is between about 0.8 and 3.9%. Such cefadroxil is obtained by suspending a cefadroxil solvate of dimethylacetamide or N-methyl-2-pyrrolidone or monomethylformamide at a temperature between 45 and 55 degree C with isopropyl alcohol, which contains either about 2-4% water or about 0.1-4% water and 0 to about 60...

The invention relates to a substantially anhydrous crystalline cefadroxil having a water content between about 0.8% and 3.9%. Such cefadroxil is obtained slurrying a cefadroxil solvate of dimethylacetamide, or of N-methyl-2-pyrrolidone or of monomethylformamide, with isopropyl alcohol containing either from about 2% to 4% of water of from about 0.1% to 4% of water and from 0% to about 60% of metha...

PCT No. PCT/SE88/00335 Sec. 371 Date Dec. 18, 1989 Sec. 102(e) Date Dec. 18, 1989 PCT Filed Jun. 17, 1988 PCT Pub. No. WO88/10402 PCT Pub. Date Dec. 29, 1988.Ventilation equipment with an intake of fresh air supply device and heat emitting or absorbing ceiling panels. These panels are placed laterally adjacent to the fresh air supply device, which is formed for blowing in air laterally along the u...

PCT No. PCT/SE88/00335 Sec. 371 Date Dec. 18, 1989 Sec. 102(e) Date Dec. 18, 1989 PCT Filed Jun. 17, 1988 PCT Pub. No. WO88/10402 PCT Pub. Date Dec. 29, 1988.Ventilation equipment with an intake of fresh air supply device and heat emitting or absorbing ceiling panels. These panels are placed laterally adjacent to the fresh air supply device, which is formed for blowing in air laterally along the u...

PCT No. PCT/SE88/00321 Sec. 371 Date Dec. 29, 1989 Sec. 102(e) Date Dec. 29, 1989 PCT Filed Jun. 14, 1988 PCT Pub. No. WO88/10284 PCT Pub. Date Dec. 29, 1988.A polysaccharide-based composition, characterized by comprising or essentially consisting of: at least a first component a) excluding galactane constituted by a substituted beta -1,4-linked glycan which is dissolvable in water of a certain te...

PCT No. PCT/SE88/00321 Sec. 371 Date Dec. 29, 1989 Sec. 102(e) Date Dec. 29, 1989 PCT Filed Jun. 14, 1988 PCT Pub. No. WO88/10284 PCT Pub. Date Dec. 29, 1988.A polysaccharide-based composition, characterized by comprising or essentially consisting of: at least a first component a) excluding galactane constituted by a substituted beta -1,4-linked glycan which is dissolvable in water of a certain te...

A material which is particularly suitable for use in a composite cathode and which includes a complex of a salt formed between a metal ion capable of existing in at least two stable valency states or an aluminium ion together with a suitable anion and a solid plastics polymeric composition capable of forming a donor acceptor type bond with the metal (or aluminium) ion, wherein the material exhibit...

A method for controlling a frequency converter having multi-phase output is disclosed and a frequency converter for applying the method. In order to achieve a good waveform the currents of the frequency converter are controlled via modulation in such manner that the current modulation periods of each phase are interlaced with the modulation periods of the other phases.

The invention can be related to the technical field of implementation and control of electrically controllable active filters. In accordance with the invention filters are controlled and implemented with the aid of a differential gain stage. Said stage includes pairs of like amplification components (QI11 and QI21, QI12 and QI22, QI13 and QI23), and groups of series-connected diode components as w...

The end parts of the two legs (3,4) turned away from the main part (2) are formed with hooks (5,6). The leg end parts are also bendable towards each other dependent upon the spring-back force of their material. - The legs are tightly adjacent to each other and located on each side of a plane running parallel to the direction for their bendability. Their end parts, when bent towards each other, can...

The frame structure (10) comprises a ladder or a platform and can be moved along a guide (7). A span enables it to rest and support, via rollers (11,11') or support wheels, on one or more running rails (8). - Two opposing frame parts (12,13) are of light metal profiles which comprise two facing, horizontally spaced fixtures (17,18) These working in conjunction with floor parts or rungs (14) extend...

Once the one part has been fitted over the other, a steel nail is inserted through the overlapping area by means of a bolt pistol. The pistol force and the size of the nail is such that the nail passes through facing surfaces of the two parts.

A screening arrangement comprises two separate endless chains 12 which are connected to each other by means of a multiplicity of cross-pieces 13 which extend at an angle to the longitudinal direction and direction of advance of the chains and are joined to individual links 15 in each chain, screen cloths 14 being arranged between the said cross-pieces 13. The screen cloths 14 consist of an elastic...

Method and arrangement in a festoon dryer for timber, where the drying air circulates F1 through the timber batch P to be dried. In the method, use is made of a preheating zone Z1, through which the timber loads P0 are brought to the actual drying zone Z3, the dry timber loads PN being removed from the dryer at the final end of the dryer. A given, most suitably regulatable part flow F11 of the dry...