A powdered, free-flowing elastomer is prepared by mixing, in a preferred embodiment, a nitrile latex with sodium carboxymethylcellulose until the mixture thickens, adding the latex mixture to a coagulant solution with agitation, also adding polyvinyl chloride coating latex to the coagulant solution, filtering the liquid, drying the filter cake, and recovering the product having an average particle...

A brake mechanism (10) operable to maintain an air operable control drive mechanism (12) in position in the event of failure of the air supply is disclosed. A first rack section (22) is attached to a control lever (16) of the control drive mechanism (12) and is engagable in any operable position of the control lever (16) by a second arcuate rack section (24). A compression spring (62) acting on a ...

The adhesion of organic resins to substrate materials is increased by depositing on the substrate a coating of a plasma polymerized unsaturated organophosphine.

A method of applying a coating to a surface consists of applying to the surface a base film of a urethane composition having a thickness of 1-2 mm, allowing the applied film partial cure, applying an inert mineral aggregate having a particle size of 1-4 mm to the coated surface by sprinkling the aggregate densely over the surface, allowing the base coating to set, removing excess aggregate and the...

A semiconductor device comprises a semiconductor substrate having at least one semiconductor region formed therein and a laminate structure including a polycrystalline silicon layer (24) formed on the semiconductor substrate and a metal layer (25) formed on the polycrystalline silicon layer (24). The metal layer (25) extends beyond the periphery of the polycrystalline silicon layer (24). In a vari...

High capacitance memory cell comprises (a) a bulk Si wafer; (b) a doped polysilicon layer adjacent one surface of the wafer, forming a junction with it; (c) a patterned nitride layer and (d) a polysilicon layer adjacent the nitride layer and means for establishing electrical connection across it. The cell further contains (e) a FET comprising a silicon oxide layer adjacent the surface of the Si wa...

A flow sensing apparatus for providing an indication of the presence of an exiting flow stream from a coal processing plant cyclone includes a probe member disposed in the edge of the flow stream, an electronic sensing circuit cooperatively arranged with the probe member in order to provide either a high or a low level signal, depending upon whether the probe member is being contacted by the exiti...

A visible light cure fluid dental composition which comprises at least one polymerizable ethylenically unsaturated material, from 40% to 90% by weight of the composition of at least one particulate filler, and a catalyst which comprises at least one ketone having photosensitive catalytic action selected from fluorenone and alpha -diketones and their derivatives, and at least one organic peroxide,...

PURPOSE:To detect the position and length of cracks by comparing potential differences between lead wires for measuring potential difference which are distributed in plurality at a field coil end with lead wires for supplying direct current. CONSTITUTION:A plurality of measuring terminals 19 are provided at a space 1 from a slot output to the end of a coil. A potential difference V0, the reference...

A surveillance marker has a semiconductor connected between arms of a dipole antenna, one arm being of non-ferrous conductive material and the other of high permeability low coercivity material such as permalloy. Higher coercivity magnetizable pieces are disposed adjacent the low coercivity arm, and all is sandwiched between paper or other insulating layers. The marker is detected by a combination...

A grease composition suitable as a lubricating sealant which is resistant to aprotic solvents such as chloroform and carbon disulfide comprises glycerine, fumed silica, polyethylene glycol and a minor amount of water. A preferred grease composition is one in which the amount of glycerine ranges is from 50 to 95 weight % of the total composition, the amount of fumed silica is from 1 to 25% by weigh...

PCT No. PCT/SE80/00014 Sec. 371 Date Sep. 17, 1980 Sec. 102(e) Date Sep. 8, 1980 PCT Filed Jan. 17, 1980 PCT Pub. No. WO80/01514 PCT Pub. Date Jul. 24, 1980.The invention relates to a thermographic apparatus intended in particular for diagnosing disturbances in circulation in the extremities of a patient, by recording the temperature distribution along a selected line extending from the ankle of a...

A drive train for a steerable drive wheel of a vehicle includes a spur gear stage and a bevel gear stage in a drive train housing which is supported for pivotal movement about a vertical axis. The drive wheel is driven through a horizontal axis from a vertically arranged motor. The housing is divided so that the axle-base change of the spur gear stage which is necessary when changing the drive whe...

The area 3 around a tank for storing liquefied gases is provided with loose pieces of heat-insulating material 5, preferably pieces of foamed glass. In case of failure of the tank, the pieces of heat-insulating material will float on the liquefied gas flowing into the area, so that the surface of the liquefied gas will be blanketed by the heat- insulating material. The floating heat-insulating mat...

A rotary stone-cutting head has a body generally centered on and adapted to be rotated in a predetermined direction about a body axis. An array of cutter supports on the body are angularly spaced about the axis. Respective outer cutter teeth carried on some of the supports have relative to the axis respective outer cutting edges generally radially equispaced from the axis and defining on rotation ...

A wiring appliance (18) e.g. a switch includes projections (22a, 22b) extending from its side. An attachment plate has an aperture for receiving the appliance (18) including upper abutment studs (13), a downwardly extending portion having a ledge (12) for engaging beneath the projection (22a) of the appliance and a downwardly projecting leg plate (14). The leg plate (14) is elastically deformable ...

An antitheft label incorporates an insulating substrate 1, which can be flexible or rigid plastic, cloth or paper, carrying a tuned circuit conductor pattern 2, 2a with a loop 3. The loop has a gap 4 bridged by a diode chip 5. The loop conductor is formed with a short section 6 of reduced cross section, such that the label responds in the conventional manner in a weak r.f. field, e.g in a shop doo...

A method of combating ectoparasite (especially acaricide) and helminth infestations in animals, especially sheep and cattle, which comprises treating said animals with an effective amount of a compound of the formula: where (R<1>)m represents up to 4 optional substances, m being 0 or an integer of from 1 to 4, each R<1> independently being C1 C4 alkyl, C1-C4 alkoxy, C1-C4 alkylthio, halo,...

In a material working (e.g. penetrating, loading, compacting) machine the power and machine weight needed to achieve a given performance can be reduced by making one (50) of two pivots (34, 50) at which a working implement such as a bucket 14 is supported an eccentric pivot and driving it by means of a motor (36). The circular vibration of the bucket at pivot (50) combined with arcuate vibration w...

In a sludge thickener, supernatant fluid is drawn off via peripheral ducts and oxygenated at a suitable location. The supernatant fluid is thereafter reintroduced into the thickener via diffusers distributed transversely of the thickener and intermediate the peripheral ducts. The generation of nauseating smells is thereby prevented, and an advantageous increase of the concentration of the sludges ...