摘要:
A subscribers telephone circuit that includes automatic muting of signals reproduced by a transducer contained within the subset, each time the telephone's handset is removed from its cradle. The circuit employs electronic techniques to eliminate the need for additional contacts on the hook switch to provide the necessary muting.
摘要:
A light-emitting polymer composition includes a polysiloxane polymer having tritium that emits radiation and a wavelength-shifter chemically bonded to the polysiloxane polymer or a siloxane carrier dispersed within the polysiloxane polymer. The wavelength-shifter emits light in response to the radiation.
摘要:
A light-emitting polymer composition includes a polysiloxane polymer having tritium that emits radiation and a wavelength-shifter chemically bonded to the polysiloxane polymer or a siloxane carrier dispersed within the polysiloxane polymer. The wavelength-shifter emits light in response to the radiation.
摘要:
Hydrotropic wetting agents enhance the activity of water for earthy materials by lowering surface tension to promote surface-to-surface contact, to neutralize the electric double layer, to destroy protective colloids, to neutralize other charged particles, and to bind water to the materials, thus, significantly reducing the evaporation rate and, concomitantly, reducing the amount of water that must be applied and the energy and time used to prepare the material. A wetting agent suitable for the present invention includes an alkylphenol ethoxylate (APE) and a polyglycol, such as, for example, glycerin or propylene glycol (when toxicity is not an issue), and an antifoaming agent, such as for example, a polysiloxane polymer. These chemicals combined in the concentration ranges of the present invention produce wetting agent/hydrotropic formulations that maybe used to provide the advantages of the present invention.
摘要:
A flexible pouch is formed from a first and second sheet which are in sealing engaged along their side edges. Two gussets are provided at the top and bottom, respectively, of the sheets. The bottom of the uppermost gusset is recessed such that a pocket is formed at one end of the pouch. A compartment is formed within the pouch by the two sheets and the two gussets. A straw or other suitable instrument can be used to puncture the uppermost gusset in order to remove the contents from the compartment of the pouch. This pocket has a wide mouth and will enable easy insertion of the straw while minimizing or eliminating product spillage.
摘要:
A holder for holding collapsed coiled tubing has been invented which, in one aspect, has a first plate, a second plate, securement apparatus for releasably securing the plates together in a spaced-apart relationship about at least one portion of a collapsed tubular, e.g. but not limited to coiled tubing, and at least one gripper or gripping element on one plate for gripping the collapsed tubular between the first plate and second plate. In one aspect such a holder has gripping elements which include a first die device on the first plate and a second die device on the second plate, the first die device disposed opposite the second die device when the holder is installed around a collapsed tubular. In one aspect dies are longitudinally offset with respect to upper and/or lower dies so that gripping is achieved across a wider portion or substantially all of the width of a collapsed tubular. In one aspect such a holder is an elevator with an elevator hook on each plate so the holder serves as an elevator. A gripping element has been invented for gripping a tubular or collapsed coiled tubing having a non-round shape, the gripping element having a surface with a shape corresponding to a shape of a portion of the non-round tubular or collapsed coiled tubing.
摘要:
Viscous liquids, such as liquid sulfur and bitumen asphalt are contacted with gases to strip absorbed gases from the viscous liquid and/or transfer gaseous components into the viscous liquid using a shrouded impeller combination immersed in the viscous liquid. The invention has particular application to the stripping of hydrogen sulfide and hydrogen polysulfides from liquid sulfur using an oxidizing gas.
摘要:
Components, usually but not exclusively gaseous components, are removed in a liquid medium from gas streams and chemically converted into an insoluble phase or physically removed. Specifically, hydrogen sulfide may be removed from gas streams by oxidation in aqueous chelated transition metal solution in a modified agitated flotation cell. The same principal may be employed in other procedures in which a gaseous phase is dispersed in a liquid phase to effect an interaction between components present in such phases. A gas-liquid contact apparatus, generally a combined chemical reactor and solid product separation device, comprising such modified agitated flotation cell is also described. In order to effect mass transfer and rapid reaction gas bubbles containing hydrogen sulfide and oxygen are formed by rotating an impeller at a blade tip velocity of at least about 350 in/sec. to achieve the required shear. To assist in the reaction, a surrounding shroud has a plurality of openings, generally of aspect ratio of approximately 1, of equal diameter and arranged in uniform pattern, such as to provide a gas flow therethrough less than about 0.02 lb/min/opening in the shroud. In general, the gas velocity index of gas through the openings in the shroud is at least about 18 per second per opening. Each of the openings has an area corresponding to an equivalent diameter of less than about one inch.