Abstract: A device for influencing light has a polarizer, a ferroelectric or electroclinic response type liquid crystal halfwave plate whose liquid crystals are in the smectic phase with bookshelf geometry and have molecular axes which are rotatable around a first direction corresponding to the direction of incoming light in response to an electric field applied across the electrodes on either side of the halfwave plate, a quarter wave retarder plate, and a mirror. The polarizer, plates and mirror are arranged such that incoming light is passed from the polarizer through the liquid crystal plate and the retarder plate, and is reflected by the mirror in a second direction opposite to the first direction back through the retarder and the liquid crystal plate so as to provide a reflected polarized light plane to the polarizer.

Abstract: The invention concerns a gas filter unit or cartridge type, including a filter material put together to form one or several filter bags, and a support frame of essentially U-shaped cross-sectional configuration, including a web portion and two lateral leg members in adjoining relationship, the filter material closest to the mouths of the filter bags being clamped in position between said lateral leg members. In accordance with the invention, the frame includes profile sections of a flexible material, preferably a plastics material, at least one of said lateral leg members being hingedly interconnected with the web portion, in addition to which locking means are provided to retain the corresponding lateral leg member in its clamping position in which it is pivoted into engagement with the other lateral leg member.

Abstract: A device for influencing light has a polarizer, a ferroelectric or electroclinic response type liquid crystal halfwave plate whose liquid crystals are in the smectic phase with bookshelf geometry and have molecular axes which are rotatable around a first direction corresponding to the direction of incoming light in response to an electric field applied across the electrodes on either side of the halfwave plate, a quarter wave retarder plate, and a mirror. The polarizer, plates and mirror are arranged such that incoming light is passed from the polarizer through the liquid crystal plate and the retarder plate, and is reflected by the mirror in a second direction opposite to the first direction back through the retarder and the liquid crystal plate so as to provide a reflected polarized light plane to the polarizer.

Abstract: Novel compounds of the formula: ##STR1## wherein R is selected from saturated or unsaturated alkyls, saturated or unsaturated cycloalkyls, heterocyclic compounds, or from (a) or (b) wherein G is carbon wherein G is carbon or nitrogen; m is 0-10, wherein R.sub.1, R.sub.2, and R.sub.3 are the same or different and selected from hydrogen, halogen, alkyl having 1 to 5 carbon atoms, electron donor groups such as alkoxy having 1-5 carbons or hydroxy, electron acceptor groups selected from cyano, nitro, trifluoroalkyl and the pharmacologically acceptable salts thereof; being useful for treating disorder in the central nervous system.

Abstract: A method for relief or prevention of a withdrawal syndrome resulting from addiction to a drug or substance of abuse and/or for the suppression of dependence on drugs or substances of abuse which comprises administering to a patient in need thereof an effective amount of a bisphenylalkylpiperazinde derivative, wherein said withdrawal syndrome comprises at least one of the symptoms selected from the group consisting of sleep disturbance, mood disturbance, and craving for the drug or substance of abuse.

Abstract: A YIG component for providing a microwave frequency output signal has a cavity holding an electromagnetic circuit defining an air gap between a pair of pole pins. The cavity having a tuning coil for generating a homogeneous magnetic field in the air gap, and further holding a YIG unit comprising a carrier; at least one ferrite crystal arranged in the air gap; and an interface connected to the ferrite crystal or crystals for providing the microwave frequency output signal. A magnetic core is included in the electromagnetic circuit and comprises the pole pins combined with magnetic flux closing path elements shaped as bars, the pole pins and the bar-shaped elements forming an open structure. The YIG component includes a support housing made of a nonmagnetic material having formed therein the above-mentioned cavity and having inside the cavity integral precision-tooled surfaces for the carrying and relative positioning of the electromagnetic circuit and the YIG unit.

Abstract: The invention is directed to the structure of a YIG-component. The component comprises a magnetic circuit for generating an homogeneous magnetic field in an air gap of the magnetic circuit and at least one ferrite crystal (81) arranged in the air gap. The magnetic resonance frequency of the ferrite crystal (81) may be controlled dependent on the strength of the homogeneous magnetic field. The magnetic circuit is enclosed in a cavity of a housing (53, 55) arranged for mechanically relieving the magnetic circuit from external influence. The housing (53, 55) may be formed from a material selected at will. The magnetic circuit is arranged in a specifically shaped seat for accurate positioning of the air gap in the housing (53, 55). A foundation formed in the housing (53, 55) is provided for supporting a YIG-unit (75) comprising the ferrite crystal (81) with correct positioning of the ferrite crystal in the air gap.

Abstract: An electro-optical device including a chiral nematic liquid crystal disposed between flat plates treated to weakly enforce molecular orientation along one preferred direction parallel to the plates. The plates are spaced by a distance small compared to the pitch of the helix typical in a bulk of the material, or the helix compensated by additives to ensure the equivalent situation. By an externally applied electric field the liquid crystal molecular orientation is rotated in a plane parallel to the plates away from the preferred orientation an angle the sign and size of which depends on the sign and magnitude of the field. The optical axis of the liquid crystal, oriented along the molecular orientation, is thus controlled by the external electric field in such a way as to make a linear light valve or other electro-optical device.

Abstract: A new liquid crystal electro-optic device similar to the SSFLC device is described. It uses the same kind of polar chiral smectics and the same geometry as the SSFLC device (thin sample in the "book-shelf" layer arrangement) but instead of using a tilted smectic phase like the C* phase, it utilizes the above-lying, essentially non-ferroelectric A phase. The achievable optical intensity modulation is considerably lower than for the SSFLC device, but the device is about one hundred times faster. It is thus appropriate for modulator rather than for display applications. Sample fabrication is simpler and, finally, the device is insensitive to polarization compensation from external charges. The electro-optic switching at moderate applied voltages can be detected through the full range of the A phase.

Abstract: A high voltage converter converts an incoming high frequency pulse voltage to a direct voltage at a level which can be varied by varying the pulse width. The converter contains a transformer (T) with its primary side (p) connected to a pulse source (U) and to a controllable switch (K). The secondary side of the transformer is divided into two sections (s.sub.1, s.sub.2). One section (s.sub.1) is connected to a rectifier in the form of a conventional voltage doubler circuit (D1, D2, Cd1, Cd2) with capacitors in parallel with the secondary winding sections (s.sub.1, s.sub.2). The other section (s.sub.2) is connected to a rectifier bridge (D3-D6) and a smoothing filer (L.sub.f, C.sub.f). The converter output is the doubler circuit output in series with the smoothing filter output.

Abstract: This invention relates to a device for eliminating vibrations of a driver's chair.The device according to the invention is characterized in that it comprises a carrying frame, a cradle located within the carrying frame and carrying the driver's chair. The cradle is provided with a number of rotatably supported pulleys and is carried relative to the carrying frame in that the pulleys contact at least two wires or ropes supported by the carrying frame. One end of the wires is secured resiliently in the carrying frame, and the wires extend transversely to the driving direction for the vehicle, in which the device is to be mounted. A damping arrangement is also provided between the cradle and carrying frame.

Abstract: In apparatus for application of a tape of insulating material provided with a heat fixing binder to a substantially elongated rectangular electrical conductor in the longitudinal direction thereof, the conductor is heated, a portion of the tape is contacted with the first side of the conductor and other portions of the tape are successively contacted with other respective sides of the conductor. The successive contacting stations after the first contacting station each include apparatus for folding a portion of the tape about an edge of the conductor and then contacting a portion of the tape with a side of the conductor including that edge. The conductor may be additionally heated after several folding and contacting operations, and pressure may be applied to the conductor and tape after the tape has been completely fixed to the conductor.

Abstract: In method for application of a tape of insulating material provided with a heat fixing binder to a substantially elongated rectangular electrical conductor in the longitudinal direction thereof, the conductor is heated, a portion of the tape is contacted with the first side of the conductor and other portions of the tape are successively contacted with other respective sides of the conductor. The successive steps of contacting after the first contacting step each include a first step of folding a portion of the tape about an edge of the conductor and then contacting a portion of the tape with a side of the conductor including that edge. The conductor may be additionally heated after several steps of folding and contacting, and pressure may be applied to the conductor and tape after the tape has been completely fixed to the conductor.

Abstract: An automatic locking system is provided for securing a submersible pump to vertical guide wires. The pump is automatically locked to the wires upon lowering of the pump and released upon raising the pump. Stationary cams in the pumping station actuate the locking system. The system assures locking when the pump is lowered and eliminates the need for manual unlocking by the serviceman when raised.

Abstract: A method and an arrangement is provided for detecting a faulty memory element among a plurality of memory elements. Two element categories are introduced. If a memory element belongs to the first category normal writing and reading processes are carried out. If a memory element belongs to the second category the writing processes as well as the reading processes are combined with an inversion a (binary complementing) of the actual transferred binary information. The category of an element is shifted at times, for example, before each writing process.

Abstract: Assembly for mounting a cross bar by compression between two opposite walls including two end parts each having a U-shaped yoke to embrace the associated end of the cross bar. One of the end parts has fixed pegs to engage the associated wall, and the other end part has threaded clamping bolts to be screwed against the other wall to clamp the support assembly to the walls by axial compression forces through the cross bar.