Abstract: A turbo molecular pump includes a magnetic bearing system which includes a rotor having an impeller connected to a shaft and a motor. A stator is positioned between the shaft and the impeller. Radial magnetic bearings, an active axial magnetic bearing and emergency bearings are each provided between the rotor and the stator. The radial magnetic bearings include passive magnetic bearings provided on the rotor and the stator respectively. The axial magnet bearing is disposed in the vicinity where the impeller is connected to the shaft. The emergency bearings are disposed on a low vacuum side with one emergency bearing being positioned near the axial magnetic bearing. A diameter of the shaft is made smaller than an inside diameter of the emergency bearing near the axial magnetic bearing. By this arrangement, only one control axis is necessary for controlling the position of the rotor. Disassembling of the shaft and impeller is easy and contamination of the high vacuum side can be prevented.
Abstract: A frequency of a chrominance signal including a jitter component and separated from a color video signal is converted from a first frequency to a second frequency by first frequency converting device. Then, the chrominance signal which frequency is converted to the second frequency is converted to have the original frequency by second frequency converting device. Each of the first frequency converting device and the second frequency converting device includes a multiplier and a bandpass filter. One multiplier of the first and the second frequency converting devices and receives a frequency signal corresponding to a phase difference between a reference frequency signal and a color burst signal separated from the chrominance signal. As a result, the jitter component is removed from the chrominance signal either in the first or the second frequency converting.
Abstract: A method giving a color tone-evaluating result which catches the deepness and transparency feelings of a coating film in an objective manner, and a device for use of this method. The evaluating results are obtained by projecting a luminous flux on a coating film, the high light saturation and/or high light excitation purity of the coating film are gotten on a basis of a high light part which is in an angle range of 5.degree. to 15.degree. against the regularly reflecting luminous flux in the reflecting light, and that, if necessary, the shade saturation and/or shade excitation purity are gotten on a basis of a shade part which is in an angle range exceeding 15.degree..
Abstract: A building method and system for the progressive construction of extensions in a dwelling, where the layout of the extension has been previously established. The system is composed of three stages. In the first stage, only the necessary foundations are built, a limited number of precast vertical wall reinforcements and a temporay roofing are installed. In the second stage, load bearing walls are erected and fixed to the initial vertical wall reinforcements with mortar keys that fill indentations in the precast elements, complimentary wall reinforcements are poured and lintels, doors and windows are installed. In the third stage, the temporary roofing is relocated at a second extension while in the first extension a permanent slab is built and the interior partitions and finishes are installed.
Abstract: An apparatus for the bilateral blowing of a treatment gas onto a web-shaped material comprises a treatment space for the approximately rectilinearly moved web-like or sheet-like material, nozzle ribs arranged on both sides of the web-like or sheet-like material for introducing the treatment gas stream into the treatment space and radial fans for generating the treatment gas stream on the one hand and symmetrical extraction of the treatment gas from the treatment space on the other hand; each radial fan is installed into a 360.degree. spiral housing; the two radial fans are arranged point symmetrical at 180.degree. and each blow into a blow-out duct disposed on the longitudinal side of the apparatus; and each blow-out duct comprises a first region of constant or approximately constant cross-setion and a distributor piece with cross-section diminishing in the flow direction.
March 19, 1991
Date of Patent:
September 29, 1992
WSP Ingenieurgesellschaft fur Warmetechnik, Stromungstechnik und Prozesstechnik mit beschrankter Haftung
Abstract: A door for an amenity receiving section of a lavatory unit for a passenger airplane formed from honey-comb panels the door having a narrow width length plate and a structure wherein one side edge lengthwise thereof is curved, and a straight rigid rod is secured adjacent to the curved side edge lengthwise of the door and having a spring action for pressing a curved convex portion of the door to exert a spring force on the inside of the receiving section.
Abstract: A heatable roll, in particular for processing web-like materials, for example paper, which includes a roll body having peripheral passages or bores which are preferably arranged parallel to the axis of the roll body, and at least one, and preferably two, screwed-on flange journals. Heating elements are arranged in the bores which extend in the axial direction parallel to the roll body.
Abstract: Method for producing a modulable garment by assembling pieces (1) having assembling lines (2) reproducing a single diamond-shaped basic design. The pieces are provided with fastening means (3) such as press-studs placed along the assembling lines and are so arranged that the diamond-shaped pieces have their large diagonal (d) oriented vertically. The top and bottom parts of the garment are each formed by a row of four pieces defining four diamond shapes assembled by their angles situated at the ends of the small diagonals.
October 31, 1990
Date of Patent:
September 29, 1992
Mauricette Niedajkasza, Bruno Niedajkasza, Catherine Niedajkasza
Abstract: A method for assembling exterior parts of a motorcar wherein assembling accuracy errors of a motor car body are determined by measuring positions of a plurality of reference points of said motorcar body. Correction data is calculated relating to respective assembling positions of plural kinds of the exterior parts which form an external shape of the motorcar, the calculation being performed on the basis of measured data obtained in the previous step, while maintaining a correlative relationship among said parts, to eliminate correlative misalignment among said parts due to the assembling accuracy errors of said motorcar body. Each of said parts is then assembled by respective assembling robots to respective assembling position which has been corrected in accordance with the calculated correction data.
Abstract: The invention is directed to a liquid level sensing device having a float (4) configured as a hollow body and slidably mounted on a slide tube (3) for the actuation of reed-type switches (11) provided in the interior of the slide tube (3). In order to perform a check for proper functioning, the float (4) is movable independently of the filling level into a signalling position by an electromagnetic actuation device (15). The hollow space (7) of the float (4) contains a gas pressurized to above or below atmospheric and is connected via a flexible tube (12) to a pressure monitoring device (13) which responds whenever the gas pressure deviates from a predetermined value.
Abstract: A method of manufacturing a wound dressing having microscopic web-like interconnections and a porous structure of continuous pores throughout the wound dressing. In the first embodiment of the method, the dressing is produced by the steps of heating while simultaneously stirring a biocompatible material and solvent to form a homogenous solution; cooling while simultaneously stirring the homogenous solution to form a gel made of a dispersion of gel particles of the biocompatible material and freeze-drying the gel. In a second embodiment of the method, the wound dressing is produced by heating while simultaneously stirring a biocompatible material and the solvent to form a homogenous solution, cooling while simultaneously stirring the homogenous solution to form a gel made of a dispersion of gel particles of the biocompatible material; warming while simultaneously stirring the gel, allowing the warm gel to cool to form a soft gel and freeze-drying the soft gel.
Abstract: An exhaust gas flow control valve for an internal combustion engine comprises a body, a diaphragm actuator and a bracket. The body is equipped with an exhaust passage and a valve member arranged in the exhaust passage. The bracket is equipped with an actuator mounting seat for mounting the diaphragm actuator and a body mounting seat connected to the body. The diaphragm actuator is equipped with a casing connected to the actuator mounting seat of the bracket, a diaphragm cased in the casing and a rod protruding from the diaphragm and out of the casing for actuating the valve member in accordance with the action of the diaphragm. Between the actuator mounting seat of the bracket and the diaphragm of the diaphragm actuator, moreover, there is formed an insulating layer for insulating the heat to be transferred to the diaphragm.
Abstract: An air cleaner is fixed, at least at a fixing portion of the air cleaner, to a motorcar body reinforcing member which is provided in an engine room to increase the supporting rigidity of the air cleaner. The air intake duct is disposed around the reinforcing member so that the duct length can be increased and the duct can be laid out in a space-efficient manner.
Abstract: A water filter with improved filtration efficiency and extended operational period. The filter includes a cassette member filled with filtration and activation agents, where a water path connecting a water inlet pipe and an open upper end of the cassette member is formed between an outer housing member and the cassette member, while an open lower end is directly connected with the water inlet pipe; a center pipe located inside the cassette member for connecting an inside of the cassette member with a water outlet pipe; and a damper member placed inside the cassette member which is vertically slidable along the center pipe, which divides the inside of the cassette member into an upper filtration chamber connected with the upper end and a lower filtration chamber connected with the lower end, where the water flows through the upper filtration chamber from the upper end and the lower filtration chamber from the lower end alternatively.
Abstract: A compressed air blowing apparatus for supplying compressed air to molding sand placed in a flask is arranged in such a manner that its compressed air reservoir tank is constituted by a surface-plate frame and a cover, the frame having a compressed-air outlet port which can be opened/closed by a sectioning device and a piston which can be vertically moved. The sectioning device is constituted by concentrically disposed large and small cylindrical members by a cover member secured to the large and small cylindrical members having air feed holes formed between the large cylindrical member and the small cylindrical member and by connecting duct for communicating the outside of the cylindrical member with the inside of the small cylindrical members.
Abstract: The present invention relates to a method of cleaning the outer circumferential surface of a drum by spraying a cleaning fluid thereon and a device for cleaning drums. The cleaning fluid is circulated and is cleaned with a filter during circulation. The drum is cleaned with a cleaning fluid passed through a primary filter having a porous structure at high pressure, after which the drum is cleaned with a cleaning fluid passed through a finishing filter having a fine porous structure. A device for cleaning drums switches a circulating passage for cleaning fluid so that the cleaning fluid can pass through the primary filter at high pressure to spray on the outer circumferential surface of the drum. Also, the device allows the cleaning fluid to pass through the finishing filter at low pressure to spray on the outer circumferential surface.
Abstract: Sand is charged into a space in a mold flask by a sand feed nozzle provided on the lower end part of a blow head inserted into a sand charge port formed in the top wall of the mold flask. The blow head is further lowered after completion of the charging so as to deeply insert the sand feed nozzle in the sand charge port in order to press the sand in the vicinity of the sand charge port within the mold flask, thereby uniformly compacting the entire sand in the space.
Abstract: A bracket for orthodontics having a bracket body made of a composite resin material and a thin layer of a synthetic resin material in a dental adhesive. The synthetic resin layer is laminated on the base surface of the bracket body in such a manner that the composite resin material of the bracket body and the synthetic resin of the thin layer are mingled with each other at the boundary therebetween. The thin resin layer is composed of polymethyl methacrylate having an average molecular weight of 1000,000 or less or a polymethacrylate copolymer.
Abstract: A reflective type screen comprising a reflective surface layer a polarizing plate layer located in front of said reflective surface layer and a diffusion layer located in front of the polarized plate layer, wherein the reflective surface layer, the polarizing plate layer and the diffusion layer are laminated together using an adhesive to form an integral structure is disclosed. In addition, a reflective type screen comprising a reflective surface layer subjected to mirror-surface processing and laid on a flexible substrate, a polarizer and a diffusion layer arranged for covering the polarizer therewith wherein the reflective surface layer, the polarizer and the diffusion layer are laminated together using an adhesive to form an integral structure is disclosed.
Abstract: This invention relates to a method of annoucing a low level of the remaining liquid in a dropper. According to the present invention, two electrodes are attached to the outer surface of a dropper, and a pulse of a stable level is applied to one of these electrodes. The remaining quantity of the liquid in the dropper can be detected automatically with ease by utilizing the variations of the electrostatic capacity occurring between these two electrodes. An annunciator is activated when it receives a signal representative of a low level of the liquid in the dropper, to inform a nurse of the necessity of replacing the dropper.