A process is disclosed for producing a 4-O-sulfonyluracil derivative of the formula [wherein R1 is hydrogen, halogen, alkyl and alkoxy, R2 is glycosyl having protected hydroxyls; and -SO2R3 is an organic sulfonyl] which comprises reacting an uracil derivative of the formula [wherein R1 and R2 are as defined above] with an organic sulfonylating agent of the formula R3SO2X [where...

A pressure relief device for aerosol containers that may be subject to high internal pressures comprises a small plug (10) formed of a rubber material and having first and second bores (30,32) extending inwardly from opposite ends (20,22) and defining between them a thin integral diaphragm (34) separating the bores. A groove (28) extends circumferentially around the device, and one end (22) of the...

A stress concentrator aperture-forming structure for containers or packages for flowable products, which allow controlled dispensing of the flowable products with one hand. The stress concentrator includes a substantially flat, relatively stiff sheet, one or more elongated, thin-walled, generally channel-shaped protrusion members, and a fault area crossing one or more of the protrusion members. An...

In an apparatus for machining electronic, electromechanical or mechanical components, in particular for machining connecting bridges (4) between terminal tabs (3) in producing semiconductor components, by means of a bottom die block (15) and die (20) interacting with the bottom die block (15), both the bottom die block (15) and the die and/or its die guide (16), which are tools, should be arranged...

The invention relates to a feeding device of biscuits to a machine for the formation of biscuit ices, comprising a pluraity of hoppers or channels (16) having a curved development, each of which is supported by the stem of a pneumatic cylinder (15); a drawer (9) in which a plurality of holes or inserts (12) are bored, having a number which corresponds to the number of channels (16) or inserts (12)...

A torsion damping device comprises two coaxial masses and a friction device, which acts between the two coaxial masses and surrounds a central hub of the first mass. The friction device is a unitary assembly which comprises at least one element of elastic material, with a friction ring secured over at least one of its faces, for contact with a first friction surface carried by one of the coaxial m...

Use of the 2-amino-2,4,4-trimethylpentane salt of clavulanic acid as an intermediate in the production of pharmaceutically acceptable salts of clavulanic acid.

The film-forming polymeric compositions described include a synthetic, thermoplastic polymer and a starchy material with a high amylopectin content; they enable the production of films, sheets and the like having good liquid- and gas-barrier effects and improved mechanical properties.

A mechanism for steering the rear wheels of a motor car with four-wheel steering and a rear suspension with an omega-shaped axle (11) includes a front steering unit (3) and a rear steering unit (16) interconnected by a transmission unit (9, 10, 19, 20) including a first transmission shaft (9) which is connected to the front steering unit (3) by an articulated joint (10) and a second transmission s...

The unitary assembly (14) is adapted for use on a motor vehicle (10) suitable for clearing roads of snow and ice by means of spraying jets of a heated saline solution. It includes: a larger tank (18) for containing water and having an outlet duct; a smaller tank (20) for containing a concentrated saline solution and having an outlet duct (34); and a compartment (22) containing a boiler (24) for he...

A connection device attached to an outlet end of a pipe of pressurized fluid such as compressed air and used for connecting the pipe to a supply inlet of a utilization device, having an automatically operated valve built therein and arranged to be opened by only pressing it against the inlet of the utilization device to supply the pressurized fluid to the utilization device and closed by only sepa...

Process for the manufacture of in particular curved tiles which are highly resistant to atmospheric agents and curved tiles so obtained in which: - the composition comprises low-carbonate clay amounting to approximately 80% of the total and fireclay amounting to 20% of the total, - the paste obtained is shaped by drawing, yielding semi- finished products which are then dried for a period of not le...

Procedure for the production of formed coated panels of the type referred to in IT-A-45801/89, comprising a formed body 11, a flat plastic sheet 15 placed on later and a thermo-formed plastic sheet 12, these parts being glued together, prior to a stage for producing the edges and mouldings 16 in the formed body 11, the said mouldings 16 being partially coincident with the formed shape to be covere...

A punch press machine (1) comprises a plurality of punch units (11) having at least one punch (12); a first transfer device (2) for the punch units (11); a plurality of die units (118) having at least one die (119); a second transfer device (3) for the die units (118); and a working station (5) provided with a striker device (66) comprising a movable striker member (82) movable along a striking ax...

Device for dissipation of electrostatic charges, characterised in that it consists of a boxlike element which has at the bottom at least one foot of material which is a good electrical conductor for discharge to the ground, and a socket for a pin connecting to a metal screen for build-up of the charges, said socket and foot being connected in a circuit to the vertices of a diode bridge which has i...

First a layer of fibre 3 on which is spread a plastic substance 8 in the fluid state which is capable of expanding and therefore consolidating, and then a spacer body 4 with through voids, and then a second layer of fibre 5 are placed in a suitable containment system and finally the containment system is closed to establish the thickness of the sandwich structure produced and therefore the expansi...

This invention relates to a hot and cold water mixer valve with thermostatic regulation which comprises a valve body (11) containing valve means formed of ceramic discs (17,18,19) and having a structure and external dimensions, water inlet and outlet passages and a manner of fastening by means of a standard mixer valve with ceramic discs, and incorporates a thermostatic unit (23) which is contiguo...