Abstract: The hybrid sound radiation device according to the invention is used for vibrating a heavy-weight rigid plate at audio frequencies. The device comprises two voice coils arranged concentrically, the external voice coil being coupled to a fluid reservoir comprising a three-fluid medium having a substantially constant viscosity as a function of frequency. A third coil is arranged around the side wall of the fluid reservoir and two electrodes of opposite polarity are provided in the fluid reservoir for providing a substantially constant electric field inside the fluid reservoir. The device further comprises a vibrating element in the form of a heavy-weight, rigid, planar plate rigidly connected to the fluid reservoir; and control circuits connected to the first, second and third coils and the electrodes.

Abstract: The system (100) for positioning a movable electrical socket (133) comprises at least one planar support element; on a first side of each support element, a rail system comprising fixed rails extending in a first direction and at least one second rail extending in a second direction perpendicular to the first direction and connected to the first rails, wherein the at least one second rail is motor-driven and movable in the first direction relative to the first rails; a power transmission transmitter (120) connected to each of the second rails, each of said transmitters (120) is motor-driven and movable in the second direction along said second rail, and which transmitter (120) comprises a magnetic retainer (122); on each side of each support element opposite the first side thereof, at least one energy receiving receiver (130) comprising an electrical socket (133) and wirelessly connected to the transmitter (120) by resonant inductive coupling for receiving electrical energy to power an electrical appliance co

Abstract: Position of a transceiver is calibrated using a pair of calibration devices spaced from the transceiver and each other. A calibration wave signal is emitted from one of the calibration devices and detected by the transceiver as well as the other calibration device. The transceiver generates a response wave signal upon receipt of the calibration wave signal which response wave signal is detected by one of the calibration devices. A delay constant for use in distance determination between transceivers is calculated based on the sum of detected transmission and receipt time intervals and the propagation speed of the wave signals.

Abstract: The object of the invention relates to a method for measuring distance using wave signals (l1, I2, v), the essence of which is a first and a second transceiver device (E, M) suitable for emitting and receiving wave signals (l1, I2, v) are provided, a first sensing device (O?) suitable for receiving wave signals (l1, I2, v) is arranged at a distance D? from one of the first and second transceiver devices (E, M), wave signals (l1, I2, v) are sent and received by the first and second transceiver devices (E, M), which are also received by the first sensing device (O?), then on the basis of the distance D?, the time intervals (?E1E2, ?M1M2, ?O1?O2?, ?E2E3, ?M2M3, ?O2?O3?) passing between the emitting and receipt of the wave signals (l1, I2, v) and the speed of propagation of the wave signals (l1, I2, v) the distance of the second transceiver device (M) from the first transceiver device (E), and the distance of the first sensing device (O?) from the first and second transceiver devices (E, M) are determined.

Abstract: The object of the invention relates to a method for the calibration of a transceiver device (T) including providing a first calibration device (A) arranged at a distance (D1) from the transceiver device (T), and a second calibration device (B) suitable for detecting electromagnetic wave signals arranged at a distance (D2) from the transceiver device (T) and at a distance (D) from the first calibration device (A), emitting a first calibration wave signal (k1) using the first calibration device (A), which is detected by means of the transceiver device (T) and the second calibration device (B), generating and emitting a response wave signal (v) by means of the transceiver device (T), which is detected by means of the second calibration device (B), then determining the delay constant ? formed as the sum of the transmission and receipt delays of the transceiver device (T) on the basis of the distances (D, D1, D2), the time intervals (?B1?B2?, ?T1 T2?) between the emitting and receipt of the wave signals (k1, k2, v

Abstract: The object of the invention relates to a method for measuring distance using wave signals (l1, I2, v), the essence of which is a first and a second transceiver device (E, M) suitable for emitting and receiving wave signals (l1, I2, v) are provided, a first sensing device (O?) suitable for receiving wave signals (l1, I2, v) is arranged at a distance D? from one of the first and second transceiver devices (E, M), wave signals (l1, I2, v) are sent and received by the first and second transceiver devices (E, M), which are also received by the first sensing device (O?), then on the basis of the distance D?, the time intervals (?E1E2, ?M1M2, ?O1?O2?, ?E2E3, ?M2M3, ?O2?O3?) passing between the emitting and receipt of the wave signals (l1, I2, v) and the speed of propagation of the wave signals (l1, I2, v) the distance of the second transceiver device (M) from the first transceiver device (E), and the distance of the first sensing device (O?) from the first and second transceiver devices (E, M) are determined.

Abstract: The process according to the invention relates to the preparation of 2-chloromethyl-thiophene of the formula (I). During this process thiophene is chloromethylated in the presence of one or more compounds containing keto group and optionally it is transformed into the compound of the formula (II). Compounds of formula (I) and (II) are intermediates of several pharmaceutically active ingredients.

Abstract: A wireless transceiver includes a transmitter having a harmonic rejection mixer and an RF output phase-locked loop in a two step up-conversion architecture, and a direct conversion receiver. The transmitter includes a local oscillator for producing a signal at a multiple of an intermediate frequency, a quadrature modulator harmonic rejection mixer responsive to the signal at the multiple of the intermediate frequency for modulating in-phase and quadrature-phase base-band signals to produce an intermediate frequency signal, a filter responsive to the intermediate frequency signal for producing a filtered intermediate frequency signal, and an RF output offset phase-locked loop responsive to the filtered intermediate frequency signal and the signal at the multiple of the intermediate frequency for producing an RF transmission signal. The harmonic rejection mixer reduces filtering requirements to facilitate a high level of circuit integration.

Abstract: A wireless transceiver includes a transmitter having a harmonic rejection mixer and an RF output phase-locked loop in a two step up-conversion architecture, and a direct conversion receiver. The transmitter includes a local oscillator for producing a signal at a multiple of an intermediate frequency, a quadrature modulator harmonic rejection mixer responsive to the signal at the multiple of the intermediate frequency for modulating in-phase and quadrature-phase base-band signals to produce an intermediate frequency signal, a filter responsive to the intermediate frequency signal for producing a filtered intermediate frequency signal, and an RF output offset phase-locked loop responsive to the filtered intermediate frequency signal and the signal at the multiple of the intermediate frequency for producing an RF transmission signal. The harmonic rejection mixer reduces filtering requirements to facilitate a high level of circuit integration.

Abstract: A needle guard assembly is provided for mounting to the hub of a needle assembly. The needle guard assembly includes a guide that is engageable on the hub. An elongate U-shaped cover is hingedly mounted to the guide and can be rotated from a first position where the needle cannula is substantially surrounded by the U-shaped walls of the cover into a second position where the needle cannula is exposed for use. The needle guard assembly further includes a slide that is slidably engaged in the guide and movable from a first position where the slide cooperatively engages the cover for completely surrounding the needle cannula to a second position where the slide is spaced proximally from the cover, thereby permitting the cover to rotate into its second position.

Abstract: A syringe assembly includes a plastic cap (20) that has an end wall (22) and a side wall (24). The end wall (22) preferably includes a plug portion (64) that extends away from an inner surface (62) of the end wall (22). The side wall (24) includes an inner surface (28) that has an engaging portion that sealingly engages a corresponding surface on a syringe. The engaging portion preferably includes two generally annular ribs (34) and (36). An interference fit is provided between the engaging portion and a corresponding surface on the syringe to maintain a sterile seal where the engaging portion contacts the syringe. The plug portion is received within an opening in the syringe and maintains a sterile seal at that point while simultaneously maintaining any medicament within the syringe.

Abstract: The invention relates to novel spiro[2H-1-benzopyran-2,4'-piperidine]-4(3H)-one derivatives of formula (I), ##STR1## wherein R stands for halogen, nitro group or a straight or branched chain C.sub.1-6 alkyl group, and their acid addition salts, as well as their quaternary salts of formula (Ia) ##STR2## wherein R and R' are the same or different and are identical to the meaning of said (above) R or can mean also hydrogen; and Z represents one equivalent of an anion. The compounds of formulas (I) and (Ia) exert an improving effect on dementias of various pathological origin and accompanying symptoms thereof. Furthermore, the invention relates to a process for the preparation of compounds of formulas (I) and (Ia); to pharmaceutical compositions containing as active gents the above compounds of formulas (I) and (Ia); and to a method of treatment.

Abstract: A needle guard assembly is provided for mounting to the hub of a needle assembly. The needle guard assembly includes a guide that is engageable on the hub. An elongate U-shaped cover is hingedly mounted to the guide and can be rotated from a first position where the needle cannula is substantially surrounded by the U-shaped walls of the cover into a second position where the needle cannula is exposed for use. The needle guard assembly further includes a slide that is slidably engaged in the guide and movable from a first position where the slide cooperatively engages the cover for completely surrounding the needle cannula to a second position where the slide is spaced proximally from the cover, thereby permitting the cover to rotate into its second position.

Abstract: The invention relates to fused heterocyclic compounds with ring junction nitrogen atom of the formula: ##STR1## wherein Q stands for 2-indolizinyl, 2-imidazo[1,2-a]pyridinyl, 2-imidazo[1,2-a]pyrimidinyl, 6-(2,3-dihydroimidazo[2,1-b]thiazol)-yl or 6-imidazo[2,1-b]thiazolyl group; and n is an integer from 2 to 4, as well as therapeutically useful salts thereof. The invention further relates to pharmaceutical compositions containing these compounds as well as a process for the preparation of the above compounds and compositions. The compounds of formula (I) exhibit mainly antipsychotic effects so the invention relates also to a method of treatment of schizophrenia, organic mental disorders, affective disorders, anxiety and personality disorders.

Abstract: A shielded needle assembly including an elongate needle with a proximal end, a distal end and a passageway therethrough. The assembly has a needle hub with a proximal end, a distal end and an outside surface. The proximal end of the needle is fitted and held in an axial opening through the needle hub at the distal end of the needle hub, with the distal end of the needle projecting distally axially. The proximal end of the needle hub is configured for releasable mounting the needle hub on a fluid handling device. The assembly of the invention has a shield with an open proximal end, a distal end, a sidewall having an elongate opening extending from the proximal end to the open end. The shield is operative between an open position, where the needle is exposed for use by passage through the elongate opening, a closed position, where the shield substantially obstructs access to the needle, and a latched position, where the shield is substantially prevented from inadvertent movement to the open position.

Abstract: A safety needle assembly for an intravenous fitting which protects against inadvertent touch contact with a piercing element after use. The assembly includes a piercing element such as a sharpened needle cannula or a blunt ended cannula that is mounted within a carrier member. A protective shield component is provided which is axially slidable relative to the carrier member and configured to attach to an intravenous fitting. The protective shield and carrier member may feature a guide assembly for guiding the shield between a pre-use, injection position and a post-use, locked position wherein inadvertent touch contact with the distal end of the piercing element is avoided. A releasable locking assembly may also be incorporated to releasably retain the protective shield in its pre-use position so as to facilitate attachment of the safety needle assembly with the intravenous fitting.

Abstract: A protective barrier assembly for shielding a piercing element such as a pointed needle cannula or blunt ended cannula during or after use of a medical implement. The piercing element includes a longitudinal axis, a length, a distal end which may be pointed or blunt, a proximal end and a passageway therethrough. The assembly may include a hub configured for mounting to a medical implement such as a syringe or evacuated tube holder and having an axial opening through it for receiving the needle so that the distal end of the needle projects outwardly. The assembly also includes a shield with an open end, a closed end, and a sidewall portion with a longitudinal slot extending from the open end toward the closed end. The shield has a first position exposing the needle and a second position wherein the shield obstructs unintentional access to the needle.

Abstract: A shielded needle assembly has an elongate needle with a proximal end, a distal end and a passageway therethrough. The assembly has a needle hub that has a proximal end, a distal end and an outside surface with an axial opening therethrough to receive and hold the needle with the distal end of the needle projecting distally axially. The assembly also has an elongate shield with a proximal end, a distal end and a sidewall with an elongate opening from its distal end to its proximal end. At least a section of the shield is substantially cylindrical and has an exterior surface. The shield is operable between an open position, where the needle is exposed for use by passage through the elongate opening, a closed position, where the shield substantially obstructs access to the needle, and a latched position, where the elongate opening is substantially obstructed and the shield is prevented from inadvertent movement to the open position.

Abstract: A needle shield assembly of the present invention includes a needle cannula having a proximal end, a distal end and a lumen therethrough. A hub having a proximal end for connecting to a medical instrument and a distal end connected to the proximal end of the needle cannula is provided. A base member is connected to the hub. An elongate needle shield includes a proximal end hingedly connected to the base member, a distal end and a longitudinal axis therebetween. The needle shield includes a longitudinal opening therein. The needle shield is capable of rotating from a first position exposing at least the distal end the needle cannula and a second position wherein the needle cannula is within the longitudinal opening of the needle shield. A sleeve having a longitudinal slot is rotatably connected to the needle shield.

Abstract: The invention relates to novel N-hydroxy-substituted 1,2,3,6-tetrahydropyridine and piperidine derivatives of the formula ##STR1## wherein A, B, D, E, G, I and R are as defined in the specification, m is 0, 1 or 2, with the proviso that:m is 0 or 2, or both G and I are hydrogen, when A is benzyl or halogen-monosubstituted benzyl group; andm is 1, when A is 2-picolyl, as well as their pharmaceutically acceptable acid addition salts. The compounds of formula (I) are useful for enhancing the tolerance of mammals (including man) against hypoxic and/or ischaemic states as well as for treating the degenerative and functional disturbances arising from hypoxic and/or ischaemic results.