Abstract: A chip-type variable resistor is provided which includes an insulating substrate formed with a resistor strip which is arcuate at least partially and has both ends electrically connected to respective extremity electrode terminals, an intermediate terminal member mounted to the substrate, and a contact member electrically connected to the intermediate terminal member and rotatably mounted to the substrate in slidable contact with the resistor strip. The resistor strip includes at least one portion having a lower area resistivity (defined as a resistance per unit surface area) and at least another portion having a higher area resistivity.

Abstract: Two coil devices are formed by forming two winding conductors on an insulating substrate by printing. A capacitor device is formed on the insulating substrate by printing a conductor, a dielectric substance and a conductor in this order. An end of each coil device is connected to a terminal of the capacitor device to form a small chip LC filter for high frequency band.

Abstract: A variable electronic component includes an insulating substrate, and a rotor made of a metal plate and rotatably supported on the substrate for parameter adjustment of the electronic component. The rotor includes a main rotor member and an upper plate member integral with the main rotor member via a connecting web which is bent so that the upper plate member overlaps on the main rotor member. The upper plate member has an engaging opening for engagement with a turning tool. The main rotor member is provided with a first engaging portion at a position spaced from the connecting web, whereas the upper plate member is provided with a second engaging portion for engagement with the first engaging portion to prevent the upper plate member from angularly deviating relative to the main rotor member when the upper plate member is overlapped on the main rotor member.

Abstract: A variable electronic component has a substrate and a rotor rotatably supported on the substrate for parameter adjustment of the electronic component. The rotor has an opening and a plurality of engaging slots extending from the opening for engagement with a turning tool. Each of the engaging slots is flanked by a pair of tool guides which are inclined downwardly toward the engaging slot.

Abstract: A process for producing a melting-anisotropic copolymerized polyester containing an alkylene terephthalate component, which comprises reacting a starting polyester composed of a dicarboxylic acid and a diol with an oxyaromatic carboxylic acid to form a copolymerized oligomer, then conducting acylating reaction by the addition of an acylating agent and further conducting polycondensating reduction thereby producing a melting-anisotropic, copolymerized polyester having a logarithmic viscosity of at least 0.2 dl/g. According to this process, a polyester of excellent physical property can be obtained at a good production efficiency.

Abstract: Disclosed herein is a wholly aromatic polyester comprising a structural unit represented by the formula (A): ##STR1## (i) a structural unit represented by the formulae (B), (C) and (D): ##STR2## or (ii) a structural unit represented by the formulae (E), (F) and (G): ##STR3## wherein X represents a C.sub.1 to C.sub.5 -hydrocarbon group, a halogen atom or an alkoxy group, and ##STR4## wherein Y represents an oxygen atom, a sulfur atom, a SO.sub.2 group, a carbonyl group, an alkylene group or an alkylidene group, or a single bond directly connecting the two benzene rings and R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7 and R.sup.

Abstract: Disclosed herein is a wholly aromatic polyester comprising the structural units represented by the formulae (A), (B), (C), (D), and (E) ##STR1## wherein R.sup.1 represents a halogen atom, a hydrocarbon group, an alkoxy group or a phenoxy group ##STR2## wherein A represents an oxygen atom, a sulfur atom, a sulfonyl group, a carbonyl group, an alkylene group or an alkylidene group, or a single bond directly connecting the two benzene rings and R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8 and R.sup.9 represent respectively a hydrogen atom, a halogen atom or a hydrocarbon group,the wholly aromatic polyester containing 5 to 50 mol % of the unit (A), 5 to 45 mol % of the unit (B), 5 to 45 mol % of the unit (C), 5 to 20 mol % of the unit (D) and 0 to 10 mol % of the unit (E), and the sum of the amounts of the unit (A) and the unit (B) and the sum of the amounts of the unit (C), the unit (D) and the unit (E) being substantially equimolar, and a process for producing the same.

Abstract: A thermoplastic resin composition is quickly crystallizable and comprises 0.1 to 10 wt. parts of an alkali metal salt of higher fatty acid having carbon atoms of at least 26 obtained by an addition of a fatty acid to .alpha.-olefin having carbon atoms of at least 23 per 100 wt. parts of a thermoplastic polyester.