A continuous flow device for separation of particles of differing densities in a centrifugal force field. Very small particles of differing densities that are normally very difficult or impossible to separate in the useful commercial gravity separation devices can be separated because of the increased settling force due to the centrifugal force field and also the buoyant force on the particles of ...

A multi-purpose tracheal tube for use with high frequency ventilation. The tube is an endotracheal tube including up to three lumens, in addition to the primary lumen, which serve various functions to provide versatility in the treatment of patients. In cuffed tubes one of the lumens is used for inflating the cuff once the tube has been placed in the desired position in the trachea of the patient....

A yarn traverse apparatus is disclosed for winding a running yarn onto a rotating package, and which includes a first traverse means comprising a guide rail, and a pair of oppositely rotating arms mounted for rotation about closely adjacent parallel, or coaxial axes. A second traverse means is also provided which comprises a grooved roller positioned between the first traverse means and the yarn p...

A release ski binding having a sole plate which is pivotal in its central region about a generally vertical axis and can be forwardly pivoted about a transverse axle which is arranged in front of the vertical axle, which sole plate is held in the skiing position by a resilient holding mechanism which, during a release, effects an opening of the elements which hold the ski shoe to the ski. In order...

A primer coated, oriented polyester film material is provided wherein the primer is applied in an aqueous medium comprising a water dispersible copolyester consisting essentially of the condensation product of components A, B, C, and D or their polyester forming equivalents as follows: (A) about 60 to 75 mole percent of terephthalic acid; (B) about 15 to 25 mole percent of at least one dicarboxyli...

An industrially advantageous process for producing 4-homoisotwistane-3-carboxylic acid. According to the invention, tricyclo[5.2.1.02,6]dec-8-yl-methylformate (II) is contacted with an inorganic strongly acidic catalyst to obtain 4-homoisotwistane-3-carboxylic acid (I).

A data processing system includes a cathode ray tube (CRT) display. Apparatus associated with the CRT tests and verifies the vertical and horizontal synchronization and the logic associated with a character generator. Refresh signals, horizontal synchronization signals and data bit signals from the character generator are counted. The counts of those signals which occur within a predetermined numb...

A combination watchdog timer and input voltage level detector circuit is coupled to a microcomputer (or microprocessor) for insuring proper operation thereof under various conditions. The watchdog timer is coupled to the microcomputer and is responsive to a status signal output by the microcomputer indicating the operating state thereof. Failure of the watchdog circuit to detect the status signal ...

A circuit is disclosed for fault-monitoring a microprocessor. The circuit includes an oscillator having an output signal of the same frequency as a test signal output of the microprocessor. The circuit also includes a binary counter. The microprocessor test output is coupled to the reset input of the counter and the oscillator is coupled to the counting input of the counter. The counter counts whe...

RAPIDLY SOLIDIFIED POWDER PRODUCTION SYSTEM A system is described for the production of rapidly solidified powder. The system contains elements for casting rapidly solidified ribbon, an in-line knife mill or a hammer mill for fracturing the rapidly solidified ribbon into shard, and either an in-line fluid energy mill or an in-line centrifugal mill for reducing the shard to powder. The system can e...

A flotation process for the continuous recovery of silver or silver compounds from solutions or dispersions is described, wherein finely divided, inert gas bubbles are injected into the dispersions of silver and silver compounds in the presence of protein and the pH of the medium is maintained at the isoelectric point of the protein. Addition of a surface active agent accelerates the process. The ...

An absorption heat pump wherein the working fluid is a fluoroalkylamine of the formula: (I) wherein each of X and X1, independently, represents hydrogen or fluorine, R represents hydrogen or a lower alkyl radical, n represents an integer from 1 to 4, each of m and q represents an integer from 0 to 2, p represents an integer from 0 to 4 provided that p is not zero when X1 is fluorine, an...

An improved system for the production of particulate metal is disclosed. The system comprises a containment vessel having a sidewall extending to an endwall, a source of metal external to said vessel and nozzle means carried by said endwall, said nozzle means including a central bore and providing communication between said vessel and said external source of metal, the sidewall and endwall coopera...

Used or contaminated pieces of fluoropolymer membrane or sheet materials are salvaged for re-use by particulating the materials into powders, granules, or fibers, or otherwise reforming it, treating the particulated material, as desired, to cleanse or modify the material, and utilizing the material in subsequent applications.

Methods of producing high molecular weight polyamide-imide foams having superior flame resistance and the foam products produced thereby. Initially, an imidocarboxylic acid is prepared by reacting a suitable oxoimine with a suitable cyclic dianhydride at a temperature of from about 25 DEG to 250 DEG C. in the presence of a solvent or by melt condensation without a solvent. The ratio of oxoimine ...

Elastomers reinforced with fibrous composite materials and having improved properties are obtained if the strengthening means used are composite materials based on reinforcing fibres and reactive resins which are coated with adhesion promoters based on polyisocyanates.

A high solids, pumpable stable dispersion of substantially anhydrous water soluble or swellable polymer particles contains at least 70% by weight polymer and contains 1 part by weight fine polymer particles below 10 microns in size and 0.1 to 7 parts by weight coarse polymer particles having a size of 10 to 300 microns with substantially no particles above 300 microns.

There are disclosed thermosetting resoles containing chemically bonded boron, tungsten and/or zirconium atoms. The metal containing resoles of this invention are useful, for example, as reimpregnation resins.

A cylindrical grinding machine has a cylindrical grinding wheel W which is dressed by a cup-wheel dresser 10 which has a plurality of discrete dressing elements mounted to the dressing face. In one embodiment, the dressing elements include two different types, a pointed diamond tool 18 used for rough dressing and an annular dressing segment 12 for finish dressing. In a second embodiment, the dress...

Angular rate sensors are disclosed. Each sensor includes a forked vibrating element having two tines extending from a base end to a free end. Each of the tines are magnetized to have two regions of opposing magnetic polarity, with the polarity of corresponding regions between the different tines being opposite. In a first embodiment, the tines are driven in complementary resonant vibration by a pa...