Abstract: Phenoxyacetic acid derivatives of the formula: wherein R1, R2, Xn and A are as defined herein, and a process for preparing the derivatives. The derivatives are used as herbicides.

Abstract: A wireless communication system containing at least one transmission apparatus and at least one communication terminal. The transmission apparatus transmits a wireless signal representing a bit sequence containing at least a predetermined number of bit errors, to the communication terminal. The communication terminal receives the wireless signal to regenerate the bit sequence. The communication terminal then examines the bit sequence represented by a received wireless signal to determine whether or not the number of bit errors contained in the bit sequence is equal to or greater than a predetermined number. When it is determined that at least the predetermined number of bit errors are contained in the bit sequence represented by a received wireless signal, the operation of the communication terminal is made inactive.

Abstract: A wireless communication system containing at least one transmission apparatus and at least one communication terminal. The transmission apparatus transmits a wireless signal representing a bit sequence containing at least a predetermined number of bit errors, to the communication terminal. The communication terminal receives the wireless signal to regenerate the bit sequence. The communication terminal then examines the bit sequence represented by a received wireless signal to determine whether or not the number of bit errors contained in the bit sequence is equal to or greater than a predetermined number. When it is determined that at least the predetermined number of bit errors are contained in the bit sequence represented by a received wireless signal, the operation of the communication terminal is made inactive.

Abstract: A magnetically driven pump includes a pump chamber, an impeller held in the pump chamber so as to be rotatable about a central axis, a drive unit for rotatively driving the impeller, and a magnetic attraction system provided on the drive unit and impeller for rotating the impeller by mutual magnetic force. At least one of the first and second magnetic attraction devices is provided in parallel with the central axis and being provided also in front of and in back of the pump in the axial direction.

Abstract: Hydroximic acid derivatives, useful as pesticides, have the formula ##STR1## in which G is G.sub.3 or G.sub.4 having the formula: ##STR2## in which R.sub.5 is lower alkyl; R.sub.6 and R.sub.7 are, independently, hydrogen or lower alkyl; W is O, S, SO or SO.sub.2 ; X.sub.1, X.sub.2 and X.sub.3 are, independently, hydrogen or a variety of substituents; and R.sub.1, R.sub.2 and R.sub.3 are, independently, hydrogen or a variety of substituents.

Abstract: A water pump is provided with pressure-feed means whereby coolant that has leaked into the space between a bearing and a seal member in a pump housing is forcibly fed into an radiator reservoir tank in order to be recovered.

Abstract: Hydroximic acid derivatives, useful as pesticides, have the formula ##STR1## in which G is G1 or G2 having the formula: ##STR2## in which R.sub.4 and R.sub.5 are each lower alkyl; W is O, S, SO or SO.sub.2 ; X.sub.1, X.sub.2 and X.sub.3 are, independently, hydrogen or a variety of substituents; and R.sub.1, R.sub.2 and R.sub.3 are, independently, hydrogen or a variety of substituents.

Abstract: A water pump is provided with pressure-feed means whereby coolant that has leaked into a space between a bearing and a seal member in a pump housing is recovered by being forcibly fed into an radiator reservoir tank.

Abstract: A fluid pump includes a housing body mounted to a mounting plate in a liquid-tight manner, a pump shaft having a journal portion rotatably supported on the mounting plate and a cylindrical cam portion integrally formed with one end of the journal portion located in the housing body, an impeller mounted on the other end of the pump shaft immersed in hydraulic fluid at a backside of the mounting plate, a drive shaft rotatably mounted within the housing body to be applied with a drive torque and positioned coaxially with the journal portion of the pump shaft, the drive shaft being formed with an eccentric bore the center axis of which is radially displaced from the center axis of the journal portion, a carrier having a cylindrical cap portion rotatably coupled with the cylindrical cam portion of the pump shaft and a shaft portion integrally formed with the cylindrical cap portion coaxially therewith and rotatably coupled within the eccentric bore of the drive shaft, and a diaphragm of elastic material coupled at

Abstract: A water pump includes a shaft to which an impeller has been attached, and a water pump housing in which the shaft is freely rotatably supported by a plain bearing. An annular mandrel having a lip seal fixedly secured to its distal end is inserted into an annular groove provided in the pump housing, thereby limiting the axial movement of the shaft.

Abstract: A dielectric ceramic composition having the composition represented by formula (1):(BaTiO.sub.3).sub.e +(BaZrO.sub.3).sub.f +(CaTiO.sub.3).sub.g +(MgTiO.sub.3).sub.h +(R1+R2+R3+R4 ) (1)wherein e is from 60.3 to 67.5 mol %, f is from 11.9 to 15.6 mol %, q is from 15.8 to 23.0 mol %, and h is from 2.6 to 5.8 mol %, provided that the total of e, f, q, and h is 100 mol %; and R1 is from 0.05 to 0.4 wt % of NiO, R2 is from 0.05 to 0.3 wt % of CeO.sub.2, R3 is from 0.03 to 0.2 wt % of MnO, and R4 is from 0.0 to 0.25 wt % of SiO.sub.2, all based on 100 mol % in total of BaTiO.sub.3, BaZrO.sub.3, CaTiO.sub.3, and MgTiO.sub.3.

Abstract: A phenoxymethylpyrimidine derivative represented by the general formula (1) ##STR1## and a herbicide containing it as an effective ingredient. This compound has a high weed killing effect, a wide weed killing spectrum and high safety on crops, and is thus useful as a herbicide.whereinX denotes a halogen atom, a lower alkyl group, a lower alkoxy group, a lower acyloxy group or a nitro group,n denotes an integer of 0, 1 or 2,Y denotes a hydrogen atom, a lower alkyl group, a lower alkenyl group, a lower alkynyl group, a substituted lower alkyl group, a substituted lower alkenyl group, a substituted lower alkynyl group, an alkali metal atom, an alkaline earth metal atom or an ammonium cation optionally substituted by alkyl group(s), andR.sup.1 and R.sup.2 each independently denote a lower alkyl group.

Abstract: A radio calling system includes a central control station simultaneously broadcasting a calling signal of an arbitrary pager terminal, and a plurality of radio transmitting stations coupled to the central control station. The plurality of radio transmitting stations simultaneously transmit the calling signal received from the central control station at the same radio frequency. The calling signal transmitted from the radio transmitting stations reach the arbitrary pager terminal and at least a neighboring one of the radio transmitting stations.

Abstract: A ferrite composed of a polycrystalline ferrite which is obtained by sintering a ferrite starting powder by a discharge plasma technique is described. The ferrite starting powder is appropriately a coprecipitated ferrite powder. Prior to the sintering, the coprecipitated powder is preferably thermally treated or calcined at temperatures of not lower than 900.degree. C. A composite ferrite is also described, which is composed of the polycrystalline ferrite and a single crystal ferrite bonded together obtained by contacting the single crystal ferrite with the coprecipitated ferrite powder or embedding the single crystal ferrite in the powder, under which the polycrystalline ferrite powder is sintered by the discharge plasma sintering thereby bonding both ferrites together.

Abstract: A routing system for finding a route which satisfies predetermined limiting conditions in a space of an object space with an aid of a computer, includes a first processor for dividing at least the object area into a plurality of areas and extracting a divided area or divided areas which satisfy the predetermined limiting conditions from the plurality of divided areas, and a second processor for further dividing the divided area or divided areas extracted by the first processor into a plurality of subdivided areas and extracting a subdivided area or subdivided areas which satisfy the predetermined limiting conditions from the plurality of subdivided areas.

Abstract: A fuel tank comprises a container having a chamber adapted to receive a body of liquid fuel and wall means defining said chamber, and a structure with a number of voids, said structure being so constructed and arranged within said chamber as to provide an arrangement wherein when said structure is exposed to the body of liquid fuel, said number of voids work to dissipate energy of waves created on the surface portion of the body of liquid fuel.

Abstract: A piston and piston-ring assembly includes a piston and piston-rings located in piston-ring grooves formed in the piston. Such a kind of surface hardening treatment as is accompanied by an increase in surface roughness, such as alumite treatment, is applied to at least a lower groove surface of a top piston-ring groove. On the other hand, a resin with an excellent adhesive property is coated on a portion of a surface of the piston-ring opposing the hardened surface of the piston-ring groove. The heat resistive property of the assembly is improved by the surface hardening treatment without being accompanied by an increase in blowby gas amount and oil consumption because resin removed from the piston ring fills the valleys of the rugged hardened surface of the piston-ring groove.

Abstract: A 1,3,5-triazine derivative represented by the following formula (I) ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4, independently from each other, represent a hydrogen atom or a group selected from the class consisting of linear or branched C.sub.1 -C.sub.6 alkyl groups, C.sub.2 -C.sub.6 alkenyl groups, C.sub.2 -C.sub.6 alkynyl groups, C.sub.1 -C.sub.6 alkyl groups substituted by C.sub.1 -C.sub.6 alkoxy or alkylthio, C.sub.3 -C.sub.6 cycloalkyl groups, a phenyl group unsubstituted or substituted by a substituent selected from halogen, nitro, cyano, lower alkyl, lower alkoxy, lower alkylthio and fluoro-substituted lower alkyl, C.sub.7 -C.sub.9 aralkyl groups unsubstituted or substituted by a substituent selected from halogen, nitro, cyano, lower alkyl, lower alkoxy, lower alkylthio and fluoro-substituted lower alkyl, and alkoxycarbonylmethyl groups having 1 to 6 carbon atoms in the alkoxy moiety; and Y represents a fluoro-substituted C.sub.1 -C.sub.3 alkyl group and a herbicidal use thereof.

Abstract: A fuel supply port structure of a fuel tank for use in vehicles comprises a filler tube with a neck portion and a fuel supply gun guide disposed within the filler tube. The fuel supply gun guide has an opening at the lower end thereof to receive a fuel gun inserted therethrough. The fuel supply gun guide also has a shutter plate pivotally connected so as to usually close the opening. The shutter plate pushed by the fuel gun inserted opens the opening, wherein the shutter plate has raised at the central portion thereof with which the fuel gun comes into contact, so that even if the fuel gun is insufficiently inserted, the free end portion of the shutter plate clears the flow of the fuel emanating from the fuel supply gun.

Abstract: In the process of subjecting a compound selected from phenols, N,N-dialkylanilines and mixtures thereof to nitrosation reaction conditions using a nitrite in an aqueous system to prepare nitrosated products selected from benzoquinone oximes and p-nitroso-N,N-dialkylanilines, the nitrosation reaction is advantageously carried out in the presence of an acid stronger than nitrous acid an organic acid of pKa 2 to pKa 5 or a salt thereof and water, the quantities of the organic acid and water being up to 5 times by mole and up to 10 times by weight the quantity of the compound to be nitrosated, respectively.