A pneumatic tire having, between two vulcanized elastomeric partitions, a layer of a sealing mixture arranged on the inner wall of the cavity of the tire, at least below the crown and from one shoulder to the other, is improved due to the fact that the layer of sealing mixture has a base of at least one vulcanizable elastomer of low molecular weight, preferably less than 30,000, contains at least ...

A tire whose inner wall is provided, below the crown of the tire and at least from one shoulder to the other of the tread, with a lining containing at least one means for sealing puncture holes is improved due to the fact that the lining comprises at least one layer of a vulcanizable sealing mixture separated by a vulcanized elastomeric partition from at least one layer of a vulcanizing mixture ca...

A vehicle transmission (not shown) is provided with a device for preventing the engagement of a gear (such as reverse) at a too high speed. A speed selector 1 compares a speed analogue signal F from a transmitter 3 with a threshold value. if the speed is above a predetermined level, the selector 1 generates a first input signal V and feeds it to a logic selector 2. A state-of-the-transmission indi...

A vehicle transmission (not shown) is provided with a device for preventing the engagement of a gear (such as reverse) at a too high speed. A speed selector 1 compares a speed analogue signal F from a transmitter 3 with a threshold value. if the speed is above a predetermined level, the selector 1 generates a first input signal V and feeds it to a logic selector 2. A state-of-the-transmission indi...

The subject invention is a foamable composition based on a blend of a carbon monoxide- or sulfur dioxide-containing ethylene copolymer and a vinyl or vinylidene halide polymer, and the closed-cell foamed article produced therefrom.

A method and apparatus is disclosed for electrically measuring the inside diameter of a metallic pipe such as oil or gas well casing. The transimpedance of two coaxial coils within the pipe is determined and then resolved into its inphase and quadrature components. The magnitudes of these two components are used to generate a corrected measurement output. A signal representative of the inside diam...

The invention relates to method and apparatus for determining the flow rate of fluid in a well over an interval including zones where fluid is exchanged between the well and the formations through which it is bored. A logging sonde is used to measure the temperature of the fluid along said interval, and the flow rate is measured at least at the ends of the interval. Then for each depth, a flow rat...

A process is provided for making a liquid composition of a perfluorinated polymer having sulfonic acid or sulfonate groups in a liquid medium by contacting the polymer with a mixture of 25 to 100% by weight of water and 0 to 75% by weight of a second liquid component such as a lower alcohol, e.g., propanol or methanol, at a temperature of at least 180 DEG C. (at least 240 DEG C. when about 90% t...

A method of making a foamed, polyester resin comprises mixing a liquid unsaturated polyester composition, with a liquid borohydride blowing agent which is a liquid borohydride complex, a borohydride complex in organic liquid medium or a borohydride salt dispersed in an organic liquid medium, which medium is at least substantially non-reactive with the borohydride salt. The resulting mixture is per...

Quaternary ammonium borohydrides of the formula wherein R1, R2 and R3 may be the same or different and each is selected from alkyl, alkenyl, cycloalkyl, aryl, alkaryl and aralkyl groups and R4 is selected from alkyl and alkenyl groups having from 1 to 30 carbon atoms, with the proviso that R1, R2, R3 and R4 are not all alkyl or that R1, R2 or R3 is not benzyl when the remainder of R1, ...

A thermoplastic blend comprises 70 to 95 weight percent of a linear low density copolymer of ethylene and an olefin having 4 to 10 carbon atoms (LLDPE); 2 to 30 weight percent of polypropylene (PP) or propylene-ethylene copolymer with a high propylene content; and less than 2 weight percent of a ethylene-propylene-diene terpolymer (EPDM) or an ethylene-propylene rubber (EPR).

A melt extrusion process for producing a low density open cell filtering element for an aerosol such as tobacco smoke from plasticized cellulose acetate. A mixture of cellulose acetate, plasticized, a volatile liquid blowing agent which is at least a partial solvent for the cellulose acetate and a nucleating agent are melt extruded under conditions wherein the melt is subjected to high shear, the ...

The invention relates to apparatus for detecting the stuck point of a conduit, such as drill pipes, in a borehole while eliminating any stress on the detection means during the measurement. A two-part body member is suspended from a cable with the two parts (23 and 24) mounted movably with respect to each other. Each part is anchored independently in the drill pipes and movements between these par...

A method for reducing the emissions of sulfur dioxide and sulfur trioxide in exit gases resulting from the burning of sulfur bearing fuels, which includes the step of igniting at least a member selected from the group consisting of alkaline earth metal nitrates, alkali metal nitrates and ammonium nitrate simultaneously with the igniting of the fuel. The method provides for the burning of high sulf...

An NMR radio-frequency coil is made up of a plurality of conductive segments evenly spaced about the peripheries and interconnecting a pair of conductive end-cap elements. Each conductive segment includes at least one reactive element which may include a variable capacitive or inductive element.

Novel 2-amino-4H-3,1-benzoxazin-4-ones represented by the formula and the pharmaceutically acceptable esters and salts thereof wherein R<1> is hydrogen or lower alkyl; R<2> and R<3> are each independently hydrogen, halo, lower alkyl, hydroxy, lower alkoxy, lower thioalkyl, -NO2, -N(R min )2, -NR min COR min , -NHCON(R min )2 or -NHCOOR min , with the proviso that at least one of R<1>, R<2...

Compounds of the formula in which X is hydrogen or the radical -CH2OR5, three of R2, R3, R4 and R5 each independently is hydrogen or and the fourth is Z each independently is oxygen, sulphur, NH or CH2, and R1, R6 and R7 each independently is an optionally substituted hydrocarbon radical having up to 50 carbon atoms, stimulate the immune system's response and anti...

Compounds of the formula wherein R1 is hydrogen, an optionally substituted aromatic hydrocarbon radical, an aralkyl radical or an optionally substituted aliphatic hydrocarbon radical having up to 45 C atoms, R2 is an optionally substituted aromatic hydrocarbon radical, an aralkyl radical or an optionally substituted aliphatic hydrocarbon radical having 5-50 C atoms, X is O, S, NH or NR...

Ivermectin, an antiparasitic agent which is insoluble and unstable in water, and other avermectin and milbemycin compounds, are formulated in glycerol formal and propylene glycol or in water and propylene glycol. These liquid formulations are suitable for parenteral administration for the treatment of parasitic infections and demonstrate improved efficacy and a broadened spectrum over previous for...

The invention relates to a new antibiotic compound, acetyl erythromycin stearate having formula I The compound according to the invention is absorbed readily from the alimentary tract. Gastric acid does not convert the compound according to the invention to an uneffective form as is the case with some other erythromycin antibiotics. Absorbing is good also when the patient eats when tak...