Stitch bonded fabrics were found to be suitable substrates for coated abrasives when the fabric has a strength in the warp direction of at least 30 dekanewtons (daN) per centimeter (cm) of width, a fill yarn cover factor of at least 40%, and stitch yarns with a tensile strength of at least 0.5 daN. For substitution of the established commercial classes of abrasives known as X and Y weights, the fa...

The multi-caliper brake (10) for positive torque controlling as well as for controlling the rotation of a shaft (12) has a hub (14) arranged to be mounted to the shaft (12) with a longitudinally centrally located, finned friction disc (16) mounted to the hub (14). A brake housing (36) supports multiple brake calipers (18-25) which are shown as including diaphragm operated, fluid pressure actuated ...

A coherent, rigid, heat stable, low density, low thermal conductivity, strong, impact resistant, water repellant thermal insulation material, having an average maximum linear shrinkage of 2% or less at temperatures up to 1200 DEG F., made from expanded perlite, alkali metal silicate solution, kaolin clay, and organic fiber. Additions of methylcellulose and polydimethyl silicone liquid enhance the...

A noxious metal(s) containing waste material is treated with an acid solution of a metal of group VIIa or VIII of the Periodical System, preferably iron or manganese. Subsequently, the metal of group VIIa or VIII dissolved in the acid is precipitated as a metal hydroxide and simultaneously the noxious metal(s) dissolved from said waste by said acid solution are incorporated in said precipitating m...

Improved fiber resin matrix prepreg fabrics are disclosed which are comprised of a first layer of reinforcing fabric coated with an epoxy resin composition and a discrete second layer of an epoxy resin modified with an elastomeric polymer. The discrete second layer is provided with a support comprising a gauze-like, lightweight fibrous mat or carrier of light-weight fibers that preserves the secon...

In a polypropylene sheet, the base material is a propylenebased polymer having a melt flow rate of not more than 5 and a propylene unit content of not less than 70% by weight, and (i) the maximum value (Ftmax) among the values (Ft's) of integration of the force parallel to the sheet plane as apperaring upon heating the sheet at a temperature above its melting point over the period during which the...

A process for producing an expanded or foamed body of a fluorocarbon resin comprising molding the resin in a molten state in the presence of a depolymerizable polyether compound.

Method for remote monitoring and registration of down hole parameters in offshore wells comprising provision of a down hole unit (1) having a pressure registration means, a power supply device and a transmitter device. The unit is arranged above a perforated portion of the casing (2), with the perforated portion being arranged in an area comprising a reservoir (4) in such a way that pressure chang...

Flowing (free flowing) granular compositions based on fluoroelastomers, containing dispersed on their surface, as an anti-caking agent, from 5 to 70% by weight of a polyolefin powder.

Granulated coke, O2 and CO2 are reacted in a fixed beds of reactor under pressure of 1-50 bar. The unburned residue is let out off the outlet of the bottom of the beds, which residue is controlled by the gas pumped into the said outlet. Mixed gas of O2 and fuel gas prod. is pumped into gas jet burner. The gas prod. is cooled to 120-200 deg.C, which prod. contains gas at least 85% (vol.).

A tap outlet (18) in a floor (12) of a vessel (10) has a shallow aperture (30) circumscribed by two drip lines (32, 34). The second drip line (34) circumscribes the first drip line (32) and is substantially coplanar with the first drip line. The two drip lines are connected one to the other by an annular hollow surface (38, 40).

A carbonaceous slurry, an oxygen-containing gas, fuel gas and, optionally, temperature moderators are fed contemporaneously and selectively into a pressurized partial oxidation zone via a process burner providing internal uniform dispersion of the carbonaceous slurry into the oxygen-containing gas and high atomization of the dispersed carbonaceous slurry. The process burner also provides dispersio...

A method of masking a workpiece (21) to prevent the adhesion of a deposited tightly adhering conformal coating (28) formed from the condensation of a vaporous diradical such as paraxylylene on selected portions of the workpiece. The process requires the covering of those areas of the workpiece to which adhesion is not desired with a non-polymerizing hydrocarbon (26) and placing the covered area in...

A method of producing plywood for use in making formwork, the method comprising dispersing a first dose of adhesive polyolefine resin powder 2 on the plywood 1 being conveyed, preheating the resin powder on the plywood, pressing the preheated resin with a first heated roller until it spreads on the surface of the plywood in a molten state and covers the plywood as a first film bonded thereto, disp...

In an X-ray system with a rotating disk having sector slits transmitting fan shaped X-ray beams from a source through a subject to the image area of an X-ray receptor an improved ratio S/P of X-rays (S) scattered from the subject to primary rays (P) forming a true image of the subject at the image area is realized if the dimensions of the system fall within the following ranges of dimensionless ra...

A time controllable switching arrangement for use with a motor vehicle is adapted for switching-on screen heating means 6 at a predetermined time interval prior to a desired time of departure of the vehicle. This can be varied in accordance with ambient temperature. The condition of the vehicle battery 5 is monitored at 13 to prevent excessive draining. Other heaters and wipers 3, 4, 7 may be cont...

The present invention seeks to provide a mesh for intra-dermal and sub-dermal use adapted to stabilise a wound during the healing process and further adapted to minimise the formation of unsightly scar tissue. In the simplest form the present invention discloses a soft fine bio-compatible longterm bio-degradable mesh-like fabric fixed by a temporary bio-compatible bio-degradable binder into a pre-...

The invention relates to a method of and apparatus for agitating and pumping particulate solids which are settled in and beneath a liquid by rotating a vaned impeller which is attached to a pump such that pressure waves are set up in the liquid and the settled solids, the solids being loosened so as to be pumpable, and the agitator being arranged to impart to its surroundings an axial component of...

A dental filling composite material is disclosed, which contains 10-99% by weight of phosphazene of the formula: in which at least one of R1 and R2 represent radicals having not less than 3 carbon atoms and being polymerizable. The filling composite material is low in polymerization shrinkage, thermal expansion coefficient and water absorption and may be quickly polymerized and cured t...

PURPOSE:To radiate heat from an electronic part chip in a highly efficient manner by a method wherein a recess is provided by notching the surface layer part of an insulating layer and a metal substrate at a part of the surface of a printed wiring board, and the electronic part chip is mounted in said recess. CONSTITUTION:An insulating layer 2 is adhered on the surface of a metal substrate 1, a ci...