摘要:
The invention relates to a developer station for electrophotographic printing apparatus operating in multicolor simplex and duplex mode and having continuous paper. The developer station contains a plurality of adjacent developer chambers with developer drums and transport drums arranged within. The adjacent developer chambers are separated by partition walls with openings though which the drums pass. The drums driven together are positively connected with each other by coupling elements arranged in the area of the openings and having associated toner-proof seals.
摘要:
A torsional vibration damper for a shaft rotating about an axis. The damper comprises a hub element joined to the shaft, such that at least two inertial masses, pivotable in the peripheral direction about pivot axes, are retained on the hub element. At least one spring for each inertial mass is provided to determine the static position of the inertial masses. The pivot axes lie between the inertial masses and the axis of the shaft.
摘要:
The invention relates to new N-alkyl-N-(meth)acryloyloxyalkylcarboxamides of aromatic carboxylic acids and aromatic carboxylic acid anhydrides, their preparation and formulations of these compounds for use as adhesives for the treatment of dental hard substance.
摘要:
Coating agent for collagen-containing materials, comprising an aldehyde, unsaturated monomers with and without active hydrogen, solubilizers and/or dispersants, activators and conventional additives.
摘要:
Acrylic and methacrylic esters of substituted 1,2-bis(phenoxy)-3,3,4,4,5,5-hexafluoro-1-cyclopentenes of the formula ##STR1## in which, in each case independently of one another, R.sup.1 and R.sup.2 denote C.sub.1 -to C.sub.4 -alkyl, C.sub.1 - to C.sub.4 -halogenoalkyl or hydrogen,R.sup.3 and R.sup.4 denote (n+1)- or (m+1)-valent, straight-chain or branched hydrocarbon radicals having 2 to 15 carbon atoms, which may optionally contain 1 to 3 oxygen bridges,R.sup.5 and R.sup.6 denote hydrogen or methyl,X represents ##STR2## and n and m denote integers from 1 to 5The ester can be polymerized to form dental fillings, coatings and artificial teeth.
摘要:
Polymer-modified bituminous compositions containing 0.5 to 20% by weight of polymer components, where 20 to 100% by weight of the polymer added is polyalkyl(meth)acrylate, which in synthesized from 50 to 99.8% by weight from C.sub.6 to C.sub.28 alkyl(meth)acrylates, 0.2 to 20% by weight from polymerizable carboxylic acids and/or sulfonic acids and 0 to 49.8% by weight from one or more other polymerizable, in particular nitrogen-containing compounds. Through the addition of reactive metal compounds, bituminous mixtures with improved elastic recovery, for example ranging from >50% to about 90%, with low temperature flexibility and high thermal stability are obtained.
摘要:
For filling and forming teeth, novel (meth)acrylic acid derivatives of triisocyanates of the formula ##STR1## wherein R.sup.1 and R.sup.2 are identical or different and stand for hydrogen or a lower alkyl radical,R.sup.3, R.sup.4 and R.sup.5 are identical or different and denote hydrogen or methyl,Y.sup.1 to Y.sup.3 are identical or different and denote divalent straight-chain or branched hydrocarbon radicals of 2 to 15 carbon atoms which may optionally include 1 to 3 oxygen bridges and which may be unsubstituted or substituted by 1 to 4 additional (meth)acryloyloxy radicals,X.sup.1 to X.sup.3 are identical or different and denote --NR.sup.1 -- or --O--, at least one of the radicals X.sup.1 to X.sup.3 denoting --NR.sup.1 --, and the ringsA and B are identical or different and may be aromatic or saturated.
摘要:
A method for making slivers of fibers with parallelized fibers from sets of tangled or matted fibers includes the steps of winding a pre-measured amount of partially oriented fiber material onto a first carding drum (3), detaching the annular fiber web from the first carding drum (3) at a specific site and separating the web from the drum. The separated fiber web is wound off the first carding drum by the detached free end of the web, and the fiber web is stretched. The stretched fiber web is wound onto a second carding drum (8) folded over onto itself, and the doubled fiber web is detached from the second carding drum at a specific site. The detached fiber web is wound off the second carding drum (8) by the detached free end of the fiber web and the fiber web is again stretched. The stretched fiber web is wound onto the first carding drum and the winding and stretching steps are repeated until satisfactory parallelization has taken place, whereupon the iteration cycle is ended. An apparatus for performing the method is disclosed.
摘要:
An electrode suitable for the TIG welding process, in which the welding arc produced by contact-less ignition between the tip of the electrode and the workpiece burns within an inert gas atmosphere and the application of the weld material is effected by a separately guided welding rod. In order to optimize the startability, the tungsten electrode has a thorium oxide content of 2-4% and a thorium-oxide particle size of 6-12 .mu.m.
摘要:
A magnetic structure including a coil and yoke includes a bobbin or spool having a coil wound thereon, the flanges at the ends of the bobbin having protruding ribs defining radially extending slots which receive the legs of bundles of U-shaped laminations. The outer corners of the laminations are beveled or chamfered and are retained in position by end plates which have inwardly protruding inclined surfaces positioned to engage the beveled corners, thereby preventing outward radial movement of the laminations. The end plates can then be retained in place by conventional fastener means. The entire assembly can also be spray-coated with plastic. The laminations themselves are not perforated.