Abstract: A stator according to the invention has an elastoplastic element, which is disposed between the winding and the pole cog and which secures the winding firmly to the pole cog, thus preventing vibrations.

Abstract: A femtosecond laser-electron X-ray source. A high-brightness relativistic electron injector produces an electron beam pulse train. A system accelerates the electron beam pulse train. The femtosecond laser-electron X-ray source includes a high intra-cavity power, mode-locked laser and an x-ray optics system.

Abstract: A kit for prescreening protein concentration for crystallization includes a multiplicity of vials, a multiplicity of pre-selected reagents, and a multiplicity of sample plates. The reagents and a corresponding multiplicity of samples of the protein in solutions of varying concentrations are placed on sample plates. The sample plates containing the reagents and samples are incubated. After incubation the sample plates are examined to determine which of the sample concentrations are too low and which the sample concentrations are too high. The sample concentrations that are optimal for protein crystallization are selected and used.

Abstract: A femtosecond laser-electron X-ray source. A high-brightness relativistic electron injector produces an electron beam pulse train. A system accelerates the electron beam pulse train. The femtosecond laser-electron X-ray source includes a high intra-cavity power, mode-locked laser and an x-ray optics system.

Abstract: An automated macromolecular crystallization screening system wherein a multiplicity of reagent mixes are produced. A multiplicity of analysis plates is produced utilizing the reagent mixes combined with a sample. The analysis plates are incubated to promote growth of crystals. Images of the crystals are made. The images are analyzed with regard to suitability of the crystals for analysis by x-ray crystallography. A design of reagent mixes is produced based upon the expected suitability of the crystals for analysis by x-ray crystallography. A second multiplicity of mixes of the reagent components is produced utilizing the design and a second multiplicity of reagent mixes is used for a second round of automated macromolecular crystallization screening. In one embodiment the multiplicity of reagent mixes are produced by a random selection of reagent components.

Abstract: In a stator according to the prior art, noise and damage occur because an undesirable play between a winding and a pole cog causes vibrations.

Abstract: Cooling fan with a fan wheel equipped with blades and an electric motor that has a stator and a rotor that is supported in a rotationally fixed manner on a driven shaft. For a purpose of a cost-saving and compact design of the cooling fan with low fan noise, the rotor is embodied as an external rotor with a bell-shaped pole housing encompassing the stator. The fan wheel is rotationally fixed in relation to the pole housing so that the fan wheel axially encompasses the pole housing at least partially and contacts the outer circumference of the pole housing at a number of points.

Abstract: Decoupling devices for an electric motor in relation to a housing usually have decoupling bushes made of elastic material, which are disposed between a motor mount and the housing and extend along a bush longitudinal axis. The decoupling device includes a first contact point at which the decoupling device rests against the motor mount, and a second contact point at which the decoupling device rests at least indirectly against the housing, each decoupling bush is secured so that the decoupling bush can be radially deflected in relation to the bush longitudinal axis, by means of which the forces are in fact transmitted, but vibrations are damped or insulated.

Abstract: A brushless direct current electric machine, comprising a stator with a hub and first stator pole teeth, which extend radially outward from this hub and have excitation coils, and with second stator pole teeth, which do not have excitation coils, interposed the first stator pole teeth, and has a rotor equipped with permanent magnets, which can rotate around the stator. The electric machine also has a base plate in which a rotor shaft bearing is inserted directly into the hub of the stator which fastens each of the second stator teeth to the base plate. The base plate is made of sheet metal and has supporting nipples oriented toward the second stator pole teeth. The second stator pole teeth have holes through which screws extend, which are screwed into the supporting nipples. The electric machine operates as a brushless direct current motor and is manufactured inexpensively.

Abstract: An electric drive motor with a rotor in the form of an external rotor and with a stator, which has a base body comprised of heat conductive material. A bearing hub for the rotor and a support that extends radially away from the hub and is for containing a printed circuit board. The printed circuit board is equipped with electronics and is disposed on a side of the support oriented away from the rotor for the sake of an improved removal of the dissipated heat that is produced in the electronics, a multitude of concentric cooling ribs are embodied on the radial surface of the support oriented toward the rotor.

Abstract: A connector is provided with a contact that is grounded to a metal shell, which can be constructed at low cost. A grounded contact device (1A) that lies in a passage (10) of a connector housing, has a contact (20A) with a front mating end (3) and a rear terminating end (2) for connecting to a cable wire, the contact device also having a grounding element (9) in the form of a sleeve that lies around the contact and that can be inserted with the contact into the passage. The grounding element has a surrounding part (34) that closely surrounds a flange (8) on the contact, and has a rear portion with slots forming a plurality of tines (44) with a larger outside diameter than the surrounding part. When the contact device is inserted into the passage, the tines are compressed to squeeze the surrounding part of the grounding element tightly against the flange.

Abstract: A method for forming synthetic crystals of proteins in a carrier fluid by use of the dipole moments of protein macromolecules that self-align in the Helmholtz layer adjacent to an electrode. The voltage gradients of such layers easily exceed 10.sup.6 V/m. The synthetic protein crystals are subjected to x-ray crystallography to determine the conformational structure of the protein involved.

Abstract: An electrorheological crystalline mass of a molecule is formed by dispersing the molecule in a dispersion fluid and subjecting the molecule dispersion to a uniform electrical field for a period of time during which time an electrorheological crystalline mass is formed. Molecules that may be used to form an electrorheological crystalline mass include any organic or inorganic molecule which has a permanent dipole and/or which is capable of becoming an induced dipole in the presence of an electric field. The molecules used to form the electrorheological crystalline mass are preferably macromolecules, such as biomolecules, such as proteins, nucleic acids, carbohydrates, lipoproteins and viruses.Molecules are crystallized by a method in which an electric field is maintained for a period of time after the electrorheological crystalline mass has formed during which time at least some of the molecules making up the electrorheological crystalline mass form a crystal lattice.