A shut-off valve unit for a circuit for injecting air into an exhaust system of an internal combustion engine has a casing (9, 29) with a first chamber (10), a second chamber (24) and a third chamber (27). The valve rod (18) forms a passage (43) for communicating air between the first chamber (10) and the second chamber (24). The opening and closing of valve (19) with respect to valve seat (21) is...

A method for controlling aspiration and irrigation fluids in an eye during a surgical procedure includes placing a handpiece in an operative relationship with an eye for introducing irrigation fluid and aspiration of fluid from the eye. Irrigation is provided at diverse pressures and aspiration is controlled on the basis of vacuum levels sensed in the handpiece corresponding to an occluded conditi...

An electronic three-dimensional viewing system. A monitor is positioned in front of each eye and an identical motion picture is displayed on each monitor. The displays are synchronized so that one of the displays slightly precedes the other. Controls are provided to control the degree of advance and also the darkness of the projection in one monitor relative to the other. Further controls provide ...

A lens adjustment device of a stereo camera of this invention operates adjustment rings of right and left lenses of an optical axis distance variable type stereo camera in the interlocking arrangement with each other. Crank arms are provided on stop adjustment rings of lenses mounted on the right and left lens boards capable of adjusting the distance between the optical axes. The right and left cr...

The present invention relates to a process for the preparation of aminotriazine derivatives of the formula I by the solvolysis of compounds of the formula II in the presence of gaseous hydrogen chloride in an alcoholic medium. The compounds of formula I are useful as intermediates in the manufacture of insecticides.

A variable-capacity store for products, the store presenting an endless conveyor belt extending along a given annular path; an input station and an output station, both movable along the path and defining, between them, a transportation portion of the conveyor belt, the transportation portion transporting the products substantially continuously and at adjustable speed from the input station to the...

A storage unit (9) for elongated elements, particularly cigarettes (2), wherein a mass of cigarettes (2) is supported on a first conveyor (14) movable both ways through a loading-unloading station (11) where the first conveyor (14) is connected to a second conveyor (22) by a connecting plate (32); the first conveyor (14) being defined by a helical conveyor belt (14) presenting at least two longitu...

A method of bulk conveying cigarettes (2), whereby a mass of cigarettes (2) is fed along a path (P) by a reversible conveying line (1) defined by a first (3) and second (4) conveyor for masses of cigarettes (2); the first conveyor (3) defining a closed-top channel (20) for a stream of cigarettes (2); the second conveyor (4) being an open-top conveyor, and being operated at a speed (V1) at most equ...

PCT No. PCT/AU95/00764 Sec. 371 Date May 13, 1997 Sec. 102(e) Date May 13, 1997 PCT Filed Nov. 17, 1995 PCT Pub. No. WO96/15991 PCT Pub. Date May 30, 1996A method of treating wastewater including: biologically treating wastewater under pressure; then reducing the pressure and substantially removing solids by dissolved gas flotation at the reduced pressure.

A billing and collection system comprising an access management computer for enabling payment for a service provided over a data network to be made for a telephone connection to a shared revenue billing network where the telephone connection to the billing network regulates access to the service provided over the data network, the data network including at least one information provider presenting...

The invention relates to a sensor for measuring gas concentrations in a gas mixture, with a tube closed at one end, along the outside of which is fitted an electric sensor contact and the open end of which is fitted in a housing, where the space along the tube between it and the housing is gastightly sealed. In order to ensure a reliable seal between the gas to be measured and the reference gas, e...

An accumulator fuel injection system for a diesel engine is provided which is designed to facilitates easy maintenance of an injector and may be used in different types of engines. The accumulator fuel injection system includes generally an injector, a solenoid valve for controlling injection timing, a connector supplying the power to the solenoid valve, a fuel supply pipe connection, and a fuel s...

An elastomer, especially a fluoropolymeric elastomer, meets requirements necessary for use as a gasket in contact with primary membranes of electrochemical sensors of both blood gas and ionic species in blood. The elastomer can electrochemically seal an electrode of a diced chip (sensor) from a sample chamber, and can electrochemically seal electrodes of neighboring diced chips from each other. Si...

A process for sealing a ceramic filter by infiltrating a metal into an end of the filter. The process includes the steps of contacting the end of a porous ceramic filter with a molten metal, whereby the metal enters into the ceramic matrix to substantially fill the void space. The ceramic filter is cooled to form a filter having a ceramic-metal composite portion. The present invention also provide...

The present invention discloses a method of selectively oxidizing hydrogen sulfide to elemental sulfur, in which a H2S-containing gas mixture contacts with an oxygen-containing gas at 50 DEG -500 DEG C. in the presence of an iron-based catalyst. The reaction product mixture contains substantially no sulfur dioxide. The iron-based catalyst, in addition to iron atom, further contains a promoter of ...

A stub file to be utilized by remote procedure calls in a computer network. The stub file comprises a common code, wherein the common code contains shared code for a plurality of stub procedures. A block identifier is passed from the application program to the common code within the stub file and is utilized in conjunction with the common code to invoke the appropriate remote procedure.

In summary, the present invention is a multithreaded computer system having a memory that stores a plurality of objects and a plurality of procedures. Each object has a lock status of locked or unlocked, and includes a data pointer to a data structure. The system uses a first object locking procedure to service lock requests on objects that have never been locked as well as object that have not re...

A fail-safe flash for an EPROM that is arranged into separately erasable sectors proceeds in a stepwise procedure. The EPROM is divided into at least three regions including a boot block region, a file region and a directory region. The boot block region stores at least two independently erasable boot blocks, only one of which is designated as a current boot block, which performs scanning of the d...

A sprayable, trowelable epoxy polysiloxane based coating and flooring composition exhibiting excellent weatherability in sunlight and superior chemical, corrosion and impact resistance after curing is made up of: (a) a resin component which includes a non-aromatic epoxy resin having at least two 1,2-epoxy groups per molecule; a polysiloxane and an organooxysilane; (b) an amine hardener component s...

PCT No. PCT/NL96/00048 Sec. 371 Date Jul. 17, 1997 Sec. 102(e) Date Jul. 17, 1997 PCT Filed Jan. 31, 1996 PCT Pub. No. WO96/23735 PCT Pub. Date Aug. 8, 1996A process is described for the aerobic treatment of effluent in a reactor of the UASB type, into the bottom of which the effluent to be treated is fed and, at the same time, oxygen is fed in an amount such that the growth of a facultative and a...