Prodn. of spiked tyres by (a) making a laminar structure of an elastomer (1) band partic. rubber, a separator film (3) that will not stick to the rubber when it is vulcanised and a second elastomer (2) band; (b) force into the first band on the surface opposite the separator film collars (6) into which are removably fitted spikes (7) for spiked tyres; (c) place the whole laminar structure onto the...

L'invention a principalement pour objet un procédé de fabrication d'un pneumatique comprenant une étape de réalisation d'une carcasse, caractérisé en ce qu'il comporte les étapes consistant à réaliser une structure laminaire comprenant une première bande en élastomère, notamment en caoutchouc, un film séparateur n'adhérant pas à l'élastomère lors d'une étape de vulcanisation, et une deuxième bande...

The prodn. of rigid polyurethane (PU) foam contg. urethane and opt. isocyanate gps. (I) comprises reacting: (a) polyisocyanates with: (b) cpds. with a mol. wt. of 400-10,000 contg. at least 2 NCO-reactive H atoms, in presence of: (c) powdered rigid PU foam as organic filler, and (d) water and/or readily volatile organic blowing agents, and opt. in presence of: (e) cpds. with a mol. wt. of 32-399 c...

The present invention relates to a process for the production of foam materials containing rigid urethane and/or optionally isocyanurate groups, and the foam materials produced by this process. This process comprises reacting a) one or more polyisocyanates, with b) one or more compounds containing at least two hydrogen atoms capable of reacting with isocyanate groups and having a molecular weight ...

An inexpensive, two coat primer system for the electrostatic coating of plastic parts is provided in which hiding of the substrate is achieved with a colored nonconductive first coat and the conductivity is supplied by a thin translucent coat containing the conductive pigment.

An apparatus and process for loading ligating clips into ligating clip cartridges. Ligating clips are fed to an inversion wheel having cavities for receiving the clips. The clips are inverted by rotating the wheel. The clips are pushed into ligating clip cartridge covers by an insertion blade. The cartridge cover is indexed by an automatic control system to receive the clips. A cartridge base is i...

A fabric shell uses a hollow, cylindrical body of polyethylene, which is provided with internal spacers and a urethane foam filling, to support tire cord fabric which is wound about the shell. The outer body of the shell is provided with circumferential grooves that grip the fabric and prevent it from shifting.

According to the present invention there is provided a tool at least partly coated with at least two refractory layers of which one of the said layers is a fine grained alpha -Al2O3-layer which is the top layer along the cutting edge-line and the other a TiCxNyOz- or a ZrCxNy-layer being the top layer on the clearance face. The coated tool exhibits excellent flank and crater wear and high resista...

According to the present invention there is provided a tool at least partly coated with at least two refractory layers of which one of the said layers is a fine grained alpha -Al2O3-layer which is the top layer along the cutting edge-line and the other a TiCxNyOz- or a ZrCxNy-layer being the top layer on the clearance face. The coated tool exhibits excellent flank and crater wear and high resista...

In the high-frequency drop-on-demand ink jet system described in the specification, a variable impedance characteristic of an ink jet orifice is utilized to provide maximum drop ejection rates exceeding the maximum rates possible with constant orifice impedance characteristics. In one embodiment, successive negative, positive and negative pulses are applied to eject each drop in order to utilize a...

PCT No. PCT/FI95/00403 Sec. 371 Date Mar. 18, 1996 Sec. 102(e) Date Mar. 18, 1996 PCT Filed Jul. 17, 1995 PCT Pub. No. WO96/04760 PCT Pub. Date Feb. 15, 1996For measuring the disturbance level of a base station that has at least one frequency hopping receiver and a way of measuring the signal level of signals received by the receiver, a free traffic channel is allocated. The allocated channel is c...

The invention concerns a keyboard for electrical and/or electronic apparatus of the type mounted on a circuit 16 and inside a housing 1 provided with openings corresponding to the keys which make up the keyboard, comprising an element 2 of shaped rubber so as to present a plurality of projections 3 corresponding to each key of the keyboard and each one having a base 4 of elastic characteristic, an...

A device for cleaning a dispensing means, specifically, a self-cleaning mixing head for the production of expanded polyurethane, comprising a projection nozzle which can be fed with a liquid under pressure and directed toward the surface of the dispensing means being cleaned, means of feeding the liquid under pressure to the projection nozzle, synchronised with the operation of the dispensing mean...

A device for regulating the advancing movement of articles in a given direction comprises a plurality of conveyors, such as for example belt conveyors, between an input supply conveyor and a positive drive output conveyor operating to supply, for example, a packaging machine. In order to adapt automatically to the handling of articles with different lengths, at least some of the aforesaid conveyor...

A device to prevent contamination in the application of a sheath or the like provided in a rolled-up way and used for prophylaxis, comprising at least one auxiliary element which is external to the said sheath and partly rolled up together with it, the said auxiliary element projecting from the said sheath in the rolled-up position, is provided.

Electrical water heater with reservoir comprising two or more "accumulating" type sections with watertight chambers and also "passage" type sections, each one having independent pipeline for outflow of the hot water, operated by its own tap and with independent electrical resistors operated by its own switch to allow the user to control at will the operation of all or some of said sections with di...

Electronic control device, with remote control, having an electronic circuit able to close or open one or more operating circuits, a station receiving electromagnetic waves, decoder, etc., and a special structure with input and output connections for insertion in any given open or mounted electrical power supply line and association with any given open or installed electrical material.

Safety device for venetian blinds comprising a locking hook which can rotate on a listel of the blinds that prevents its lifting from the bottom, by interfering with a hook fastened to its running guides, yet which when lifted normally from the top, by pulling a cord secured to an upper listel, it flattens out against the blind, disengaging from the fixed hook.

Method for removing and recovering chromium and an aqueous acid solution containing trivalent chromium and possibly other metals, characterised in that removal of the trivalent chromium from the said solution is performed by placing the said solution in contact with a mixture of ion exchange resins comprising at least one cationic resin whose pKa lies between 3 and 7 and at least one anionic resin...