Abstract: An object is to provide a bolt fastening structure which is resistant to loosening even in an environment with vibration. A fastening structure 100 according to the invention of the present application is configured such that a male screw 10 having a thread section 11 with a thread ridge 11a and a thread groove 11b, and a female screw 20 forming a recess 20 in a first member 300 serving as a fastening target, the female screw 20 having a threaded section 21 formed in the recess 20 and engaged with the thread section 11, are in a fastened state. In the fastened state, a tip portion 12 forming a leading end of the male screw 10 is in point contact with a bottom surface 23a of the recess 20.

Abstract: A suction control device for a multiple cylinder internal combustion engine comprising a shell body presenting a suction path communication to each cylinder in a multiple cylinder internal combustion engine, a rotary shaft (21a) penetrating and born by the shell body, a butterfly valve (21) supported by the rotary shaft and provided in each of the suction paths so that it can freely open or close the suction path, and a restricting means for restricting movement of the rotary shaft in the axial direction; wherein the rotary shaft and the butterfly valve are monolithically formed with a resin material, the shell body is made from a resin material, and the restricting means comprises an expanding piece (21b) monolithically formed on the rotary shaft and having a width in the radial direction thereof, a contact wall (24) formed on the shell body and slidably contacting and supporting the expanding piece, and a resilient energizing member (33) for energizing the expanding piece to contact it to the contact wall.

Abstract: When electrodes in two-layer composition, provided with a color filter in the inside thereof, are provided on the inner surface of a liquid crystal cell board, it is aimed to prevent creation of faulty connections in contact holes and to transmit a driving voltage normally even if faulty connections may occur. A first-layer transparent electrode 1a is formed on the board, then resist is coated so that the contact holes 6 are open on the side surface in one side of the electrode pattern, on which a color filter 3 is formed. After that, said resist is removed and a second-layer transparent electrode 1b is formed in film.

Abstract: An oxygen sensor includes a hollow tubular element made of a solid electrolyte capable of conducting oxygen ions. The inner surface of the element is exposed to the atmosphere, and the outer surface thereof is exposed to an exhaust gas of which the oxygen concentration is to be detected. First and second electrodes are arranged on the inner and outer surfaces of the element, respectively. The second electrode is provided with a coating which contains a catalyst for causing and promoting a water gas reaction of carbon monoxide contained in the exhaust gas approaching the second electrode. Alternatively, a large number of pellets containing the catalyst are charged in the space between the tubular element and a protective tube surrounding the element.

Abstract: A method is provided for forming a color filter for a liquid crystal display apparatus which requires considerably reduced area on a transparent substrate for performing electrodeposition of the color filter. The method includes coating non-extended liquid crystal driving terminal portions with a protective film with a notch etched therein for exposing an end edge portion of the non-extended driving terminal; and coating the non-extended driving terminals with a transverse strip of conductive material to place the non-extended terminals into a conducting state.

Abstract: A method of manufacturing an optical compensator sheet comprising the steps of providing a sheet of ionomer, which ionomer is bridged with sodium or magnesium ions, stretching said sheet of ionomer along one direction in the plane of sheet, so as to generate uni-axial optical anisotropy of predetermined amount having an optical axis along the stretched direction, sandwiching said stretched sheet of ionomer between a pair of substrates, putting said sandwiched sheet in an evacuatable heat-resisting bag, evacuating and sealing said bag, loading said bag in an autoclave furnace and applying heat and pressure to said sheet in said autoclave furnace at a temperature not less than the melting point of the sheet. The stretched sheet has a positive optical anisotropy along the stretched direction. The sheet after heat and pressure treatment has a negative optical anisotropy along the normal to the sheet.

Abstract: An oxygen sensor testing device having an oxygen sensor disposed in a rear stage of a synthetic gas passage to evaluate the oxygen sensor using a synthetic gas supplied to the synthetic gas passage, in which a sulfur dioxide gas passage supplied with sulfur dioxide gas communicates with a front stage of the synthetic gas passage to supply sulfur dioxide gas to the synthetic gas passage, thereby enabling exact evaluation of the oxygen sensor using the synthetic gas having composition close to actual exhaust gas containing sulfur dioxide.

Abstract: There is disclosed an improved liquid crystal cell wherein liquid crystal material is sealed between opposing transparent substrates and particles of particulate material are disposed on the transparent substrate thereby defining a uniform substrate interval and wherein the particulate material is disposed in a plurality of areas of less than 100 mm.sup.2 with void areas defined between the areas of particulate material.

Abstract: An oxygen sensor having a detecting element for detecting the concentration of oxygen contained in a subject gas. The subject gas reaches the detecting element through a carrier carrying a substance which adsorbs or desorbs the oxygen in the subject gas in accordance with the partial pressure of the oxygen. Thus, the detecting element is prevented from being corrupted by O.sub.2 or CO. Even though the oxygen sensor is temporarily exposed to excessive O.sub.2 or CO, therefore, the responsiveness of oxygen concentration detection to be effected thereafter is improved. Cerium oxide or lanthanum oxide may be suitably used as the oxygen adsorbing or desorbing material. The carrier may be pellets surrounding the oxygen detecting element, or a protective layer or a buffer layer formed on the surface of the detecting element. Alternatively, the carrier may be formed independently of the oxygen sensor so as to be disposed in an exhaust passage on the upper-course side of the oxygen sensor.

Abstract: A liquid crystal color display device comprises: a two-layer structured transparent electrode in an identical pattern provided on a transparent substrate forming a liquid crystal; a color filter membrane disposed between said two-layered transparent electrodes by an electrically setting method; and a plurality of pinholes of a size less than 50 .mu.m formed in a same number on each display part at the equal distance to each other in a smaller distance than the pitch between each display part, through which said first layer and second layer of the transparent electrode are electrically connected to each other.