Porous PTFE materials having high strength and coarse microstructure are produced by densifying the materials after removal of lubricant and then stretching. The term, "coarse", is used to indicate that the nodes are larger, the fibrils are longer, and the effective pore size is larger than conventional materials of the same matrix tensile strength. Densification can be achieved through the use of...

Porous PTFE materials having high strength and coarse microstructure are produced by densifying the materials after removal of lubricant and then stretching. The term, "coarse", is used to indicate that the nodes are larger, the fibrils are longer, and the effective pore size is larger than conventional materials of the same matrix tensile strength. Densification can be achieved through the use of...

A method of making multiple reclosable bag material, which comprises advancing from a supply source bag wall film in continuous strip form and providing confronting colinear wall panel portions with surfaces facing toward one another, feeding separable fastener assembly in continuous strip form from a supply source into corunning relation between the wall panel portions, and permanently securing t...

Controlled release additives are provided which are useful to raise the release of low-release solventless silicone release compositions. Solventless silicone release compositions are also provided. The aged release of controlled release compositions may also be enhanced by addition of a small amount of a vinyl polysiloxane gum.

A solid pharmaceutical composition comprising one or more beta -lactam antibiotics in acid or amphoteric form in association with at least one physiologically acceptable base in the presence of a gaseous atmosphere containing a stabilizing amount of carbon dioxide at a concentration greater than that of atmospheric air. The compositions exhibit enhanced stability. A preferred antibiotic for the c...

A solid pharmaceutical composition comprising one or more beta -lactam antibiotics in acid or amphoteric form in association with at least one physiologically acceptable base in the presence of a gaseous atmosphere containing a stabilizing amount of carbon dioxide at a concentration greater than that of atmospheric air. The compositions exhibit enhanced stability. A preferred antibiotic for the c...

A solid pharmaceutical composition comprising one or more beta -lactam antibiotics in acid or amphoteric form in association with at least one physiologically acceptable base in the presence of a gaseous atmosphere containing a stabilizing amount of carbon dioxide at a concentration greater than that of atmospheric air. The compositions exhibit enhanced stability. A preferred antibiotic for the c...

The method is for the temporary synchronisation of two machines driven by separate electric motors. The first machine (1) is driven at a constant speed, whilst the other (8) runs at a speed between 1 and 10 per cent higher than the first. The drive of the second machine is interrupted in the position where synchronisation is required, and then recommenced on receipt of a signal from the first mach...

The tree trunk lopping mechanism comprises a grip claw from which evolves a lopping head which executes a striking movement along the timber. Movement is achieved by a scissors structure composed of links and operated via a hydraulic cylinder. - The mechanism moves quickly so that inertia in the lopping head and scissors can be used for severing thicker stems.

The loudspeaker is housed inside an outer casing, e.g. of a subscriber telephone set, which also contains printed circuits for transistors, capacitors, resistances, etc. The casing also houses a resonance box (1,2,3) for the loudspeaker comprising a sealed and vibration-damped compact unit. The resonance volume of the box is limited by a lower printed circuit (2) as base, and a similar circuit (1)...

The arrangement is for fixture of a boxed microphone in the interior of a cover for an appts. provided with a loudspeaker. The cover has a sound outlet for the microphone at the point where the microphone box is fitted. On the inside of the cover (3), is fixed a separate holder (2) for the microphone box (1), which is of vibration-free, flexible material. Both holder and box are formed with compon...

The invention refers to a device on buckets (1) for the handling of wet masses (19) such as peat. The bucket is equipped with a revolving lid (3) and its bottom is equipped with a screw for feeding out mass (10). When the mass is introduced into the bucket, the lid swings (3) so that the mass (19) is pressed against the feeding out screw (10) during dewatering. The mass is compressed under the fee...

The appts. comprises movable slides, measurement bars or columns forming a bridge, and measuring points moving in a space coordinate system (x,y,z). The movements are read from scales for determination of the position coordinates for different points. A steel roller strip with graduations is contained in a housing, and at its free drawn-out end has an index plate. There is also a fixed index on th...