| Patent Number |
Title Of Patent |
Date Issued |
| 4459459 |
Power supply for electric arc welding |
July 10, 1984 |
| A power supply for electric arc welding, particularly gas tungsten arc welding, is described. The supply operates from conventional, alternating potential, and provides either a direct current or an alternating current with a rectangular wave shape to a load. The supply includes an input |
| 4452090 |
Ultrasonic flowmeter |
June 5, 1984 |
| An ultrasonic flowmeter which measures gas velocity including a pair of ultrasonic transducers oppositely located around a conduit at a predetermined angle to the flow direction. Each transducer alternates between acting as a transmitter and a detector of ultrasonic frequencies, thus |
| 4447946 |
Method of fabricating multifilament intermetallic superconductor |
May 15, 1984 |
| Nb wire and Sn plated Cu wire and/or Sn plated Cu foil strip are fabricated into a composite that is mechanically worked to form a multifilament superconductor precursor that does not require intermediate anneals and that has required amounts of Sn distributed throughout its cross sectio |
| 4444016 |
Heat exchanger apparatus |
April 24, 1984 |
| A vapor component of a gas mixture is separated by condensation and is recovered for further use. A solvent vapor mixed with inert gas is condensed in a multistage heat exchange system in a manner which utilizes a first refrigerant to condense a portion of the vapor in a first heat e |
| 4417909 |
Gas separation process |
November 29, 1983 |
| Method and apparatus for separating gases having different partial pressures at a given temperature includes introducing a multi-component gas mixture into a chamber, reducing the temperature therein to solidify and liquefy all components. At least one component remains liquid which is |
| 4411712 |
Method of manufacture of multifilamentary intermetallic superconductors |
October 25, 1983 |
| An improved method for manufacture of multifilamentary superconductors of the A.sub.3 B type having the A-15 crystal structure, such as Nb.sub.3 Sn, is disclosed in which rods or wires of the A material are disposed throughout a matrix consisting of Cu and the B material in substantially |
| 4377173 |
Methods and apparatus for expanding tobacco |
March 22, 1983 |
| Tobacco impregnated with solid carbon dioxide is heated in a chamber to expand the same by sublimation of solid CO.sub.2 and expulsion of CO.sub.2 gas from the tobacco. The expanded tobacco is separated from the internal atmosphere of the expansion device and the tobacco is discharged th |
| 4373344 |
Methods and apparatus for producing refrigeration |
February 15, 1983 |
| Refrigeration is produced by passing liquid carbon dioxide through a narrow slot into an enclosure or conduit having an inlet and an outlet in communication with ambient atmosphere. Liquid carbon dioxide is converted to solid and gaseous phases upon passage through the slot to produce a |
| 4369958 |
Rotating table positioning device with minimum backlash |
January 25, 1983 |
| A motor-driven rotating table positioning device has a bullgear engaged by two pinions each driven by the high-efficiency worm and gear set. These two worm and gear sets are connected by a coupling shaft and an adjustable coupling which allows a desired torsion to be maintained in the co |
| 4365097 |
Process for the preparation of halogenated aliphatic ethers |
December 21, 1982 |
| Processes for the preparation of certain halogenated aliphatic ethers are described, and in particular the preparation of 1,1,2-trifluoro-2-chloroethyl methyl ether, i.e., CH.sub.3 OCF.sub.2 CHFCl. This particular ether has many uses, and is a valuable material for use in the product |
| 4354829 |
Methods and apparatus for calcining carbonaceous material |
October 19, 1982 |
| The rate of calcining carbonaceous material in a rotary kiln is increased by enriching with oxygen air supplied into the kiln by fans. The introduction of oxygen is effected during a predetermined portion of each kiln revolution and is effective to enrich the oxygen content of air su |
| 4354493 |
Thoracic drainage unit |
October 19, 1982 |
| A thoracic drainage unit for removal of fluids from the thoracic cavity of a patient and/or to assist a patient in breathing comprises a collection chamber for receiving the fluids from the patient and an underwater seal located between the collection chamber and the patient. The underwa |
| 4346246 |
Process for adjusting the halogen content of halogenated aliphatic ethers |
August 24, 1982 |
| Process for adjusting the halogen content of halogenated aliphatic ethers, by selective replacement of a halide substituent on the ether with a hydrogen. The process is particularly useful for the production of certain inhalant anesthetics. |
| 4345896 |
Methods and apparatus for calcining carbonaceous material |
August 24, 1982 |
| The rate of calcining carbonaceous material in a rotary kiln is increased by introducing oxygen into the inlet of air fans mounted on the kiln. The introduction of oxygen is effected during a predetermined portion of each kiln revolution and is effective to enrich the oxygen content of a |
| 4337582 |
Methods for controlling vapor concentrations in an atmosphere |
July 6, 1982 |
| The degree of saturation of a vapor in a chamber such as a curing oven is controlled by sensing the vapor dew point and varying the rate of removal of such vapor from the oven in response to a comparison of the sensed dew point with a predetermined dew point. This comparison may also be |
| 4334629 |
Counterbalance mechanism for incubator hood |
June 15, 1982 |
| A counterbalance mechanism is disclosed for offsetting the normal gravitational forces exerted on a rotatable cylindrical hood for an incubator. The mechanism includes a specially shaped cam that is fixed with respect to the rotatable hood. A cam follower, mounted on a slide movable |
| 4334105 |
Method for the dehalogenation of ethers |
June 8, 1982 |
| Methods for the dehalogenation of various haloethers are disclosed, comprising providing a haloether having the formula CX'.sub.3 -[CY.sub.2 ].sub.n -O-CZ.sub.2 -CX.sub.3 in which X', Y, Z and X are specifically disclosed combinations of hydrogen, fluorine chlorine and bromine such t |
| 4321913 |
Isolation incubator |
March 30, 1982 |
| An improved infant incubator is disclosed having a cylindrical shaped transparent hood which provide considerable accessibility to the infant. The cylindrically shaped hood consists of a plurality of sections rotatable about a central axis. The sections may be individually opened to |
| 4317879 |
Glucose analyzer membrane containing immobilized glucose oxidase |
March 2, 1982 |
| A membrane and the method of making the same is disclosed for use with glucose analyzers to detect the level of glucose in liquid mediums such as whole blood. The membrane comprises a thin base wafer of a hydrophobic fluorocarbon material such as polytetrafluoroethylene (TEFLON). The waf |
| 4315506 |
Positive pulse device |
February 16, 1982 |
| A device for use in vacuum suction systems for withdrawing fluids from a patient's body cavity, such as the stomach, wherein the device includes a chamber that is located in the flow stream of such fluids between the patient and the source of vacuum. At predetermined intervals, the devic |
| 4314451 |
Controlling temperature of a cryogenically refrigerated product |
February 9, 1982 |
| The temperature of a product which is being chilled in a blender by introducing carbon dioxide in solid and gaseous form into the blender is controlled by sensing the power drawn by the drive motor coupled to the impeller. The power drawn by the motor is sensed and analyzed and, upon |
| 4308876 |
Methods and apparatus for expanding tobacco |
January 5, 1982 |
| Tobacco impregnated with solid carbon dioxide is heated in a chamber to expand the same by sublimation of solid CO.sub.2 and expulsion of CO.sub.2 gas from the tobacco. The expanded tobacco is separated from the internal atmosphere of the expansion device and the tobacco is discharged th |
| 4308865 |
Interlock system for anesthetic vaporizers |
January 5, 1982 |
| A vaporizer interlock system is disclosed which is used in an anesthesia machine having two calibrated vaporizers for providing an anesthetic to a patient and further having a selector valve with three positions, two extreme positions where one of the two vaporizers is being utilized and |
| 4307903 |
Antidisconnect harness for medical connections |
December 29, 1981 |
| An antidisconnect device is provided to prevent the inadvertent separation of medical fittings or connectors normally provided on the external end of a patient connected medical device such as an endotracheal or tracheostomy tube. The antidisconnect device basically comprises an annular |
| 4302980 |
Anesthesia machine with modular flowmeters |
December 1, 1981 |
| An anesthesia machine is disclosed wherein flowmeters used to denote flow of O.sub.2 and other gases are in the form of precalibrated modules. The modules each contain a flowtube, float and scale and are precalibrated and the modules sealed to prevent tampering or affecting the calibrati |
| 4300548 |
System for detecting position of gauge pointer |
November 17, 1981 |
| A system is disclosed for detecting the position of the pointer of a gauge. The system includes a stationary light source which is positioned adjacent the pointer. A lens receives the light from the light source and redirects the light in at least one elongated light beam directed toward |
| 4294395 |
Brazing process |
October 13, 1981 |
| Ferrous parts are bonded together in a copper brazing furnace under suitable temperatures and a furnace atmosphere which, in the absence of parts, is comprised of at least 90% nitrogen, up to 7% combined hydrogen and carbon monoxide with hydrogen being greater than 50% of the total of |
| 4291689 |
Evacuation manifold for medical anesthesia circuits |
September 29, 1981 |
| A manifold is described for use with anesthesia breathing circuits and which is adapted to receive exhaust anesthetic gases from the anesthesia breathing circuit for disposal thereof. The manifold is connectible to a vacuum system for such disposal and includes a needle valve which may b |
| 4285740 |
Wrapped tantalum diffusion barrier |
August 25, 1981 |
| A multifilamentary stabilized superconductor of the A-15 type is disclosed wherein the A-15 compound is formed on rods of niobium or vanadium by diffusion of tin or gallium, respectively, from a copper alloy matrix and wherein stabilization is provided by an external layer of copper. The |
| 4281651 |
Lung ventilator |
August 4, 1981 |
| A lung ventilator particularly adapted for use in weaning patients from dependence thereupon and includes an exhalation conduit through which the gas exhaled by the patient is passed. Both the rate of flow of gas passing through the exhalation conduit during each individual exhalation ph |
| 4279250 |
Drug nebulizing system for medical ventilators of the volume-limited type |
July 21, 1981 |
| An all-pneumatic medical ventilator of the volume-limited type is provided with a pneumatically driven drug nebulizer for injecting medication into the patient's breathing circuit in response to a cyclic pressure signal from the ventilator. The nebulizer is driven either directly or |
| 4270938 |
Processes for decontaminating nuclear process off-gas streams |
June 2, 1981 |
| In a process for decontaminating a nuclear process off-gas stream, oxygen and oxides of nitrogen are removed by catalytic reaction with hydrogen. The feed gas stream is then passed serially through a drier, a carbon dioxide adsorber and a xenon adsorber to sequentially remove water, |
| 4266573 |
Anesthesia machine having proportion limiting control system |
May 12, 1981 |
| A system is disclosed for providing an interconnection between two needle valves such that movement of either needle valve, in opening or closing thereof, is affected or limited by movement of the other valve. The invention is particularly suited to an anesthesia machine wherein separate |
| 4253453 |
Selector valve for anesthesia machine |
March 3, 1981 |
| A selector valve for providing a choice of one of two vaporizers for use in administering an anesthetic to a patient is disclosed in connection with a manifold for receiving the vaporizers.The selector valve has three positions, wherein the user can utilize one of two vaporizers or place |
| 4242536 |
Aluminum-stabilized multifilamentary superconductor |
December 30, 1980 |
| A multifilamentary superconductor having a large number of NbTi filaments in an aluminum alloy matrix which is stabilized by a high-purity aluminum sheath is disclosed, together with the method of its manufacture. An Al alloy billet having a number of NbTi rods disposed therein is extrud |
| 4238673 |
Variable lead device for circular scan tracers |
December 9, 1980 |
| An improved circular scan line tracing device for use in connection with flame or plasma cutting machines, as well as other machine tools, is disclosed which features provision for adjustment of the lead of the tracing device while the machine is operating. |
| 4237700 |
Methods and apparatus for providing refrigeration |
December 9, 1980 |
| The refrigeration available in a liquefied gas is utilized to refrigerate a fluid having a boiling point above the boiling point of the liquefied gas which is sprayed into an endless conduit such that the liquefied gas is vaporized. The resulting thermal currents and momentum of the spra |
| 4236868 |
Tangential RIF turbine with particle removing means |
December 2, 1980 |
| A radial inflow turbine is disclosed utilizing a star wheel type of blade and wherein the inlet nozzles are located along the sides or lateral of the blade tips rather than located radially beyond the blade tips. The side approach enables the turbine to include an annular chamber outside |
| 4230732 |
Methods of chilling poultry |
October 28, 1980 |
| Dressed poultry without giblets in the breast cavity are chilled in an ice water bath or the like to 32.degree.-35.degree. F. The giblets are frozen and are then inserted into the carcass thereby providing refrigeration and enabling shelf life of the carcass to be maintained for up to 30 |
| 4226605 |
Flameless vaporizer |
October 7, 1980 |
| A liquid-vapor converter of a compact skid-mounted design is provided that efficiently converts a cryogenic liquid into a vapor, and which includes, in the same skid mounting, all necessary components necessary to receive the liquid and to provide therefrom a high pressure source of gas, |
| 4224735 |
Method of production multifilamentary intermetallic superconductors |
September 30, 1980 |
| A method of making A-15 type intermetallic superconductors is disclosed which features elimination of numerous annealing steps. Nb or V filaments are embedded in Cu matrices; annular layers of Sn or Ga, respectively, separated from each other by Cu layers, provide the other component of |
| 4223450 |
Methods and apparatus for controlling gas flows |
September 23, 1980 |
| A chamber is isolated from ambient atmosphere by supplying a flow of inert gas to the entrance and/or exit of the chamber such as an oven for curing solvent borne resin coatings on a material passed therethrough. The inert gas is supplied at a substantially constant mass flow rate throug |
| 4214155 |
System for detecting position of gauge pointer |
July 22, 1980 |
| A system is disclosed for detecting the position of the pointer of a gauge. The system includes a stationary light source which is positioned adjacent the pointer. A lens receives the light from the light source and redirects the light in at least one elongated light beam directed toward |
| 4208224 |
Heat treatment processes utilizing H.sub.2 O additions |
June 17, 1980 |
| In a process for carburizing ferrous parts, nitrogen gas is supplied to the vestibule of an integral quench furnace while a gaseous carbon source is supplied without a carrier gas to the furnace hot zone. H.sub.2 O is introduced into the hot zone at the rate of 0.1-15 ml/min such that up |
| 4208149 |
Electrode connecting pin assembly |
June 17, 1980 |
| A urethane adhesive is used on the threads of a preassembled graphite furnace electrode nipple to maintain the nipple in its exact pre-set position during shipment and assembly on the furnace. The urethane adhesive does not prevent intentional disassembly should that be necessary bef |
| 4205119 |
Wrapped tantalum diffusion barrier |
May 27, 1980 |
| A multifilamentary stabilized superconductor of the A-15 type is disclosed wherein the A-15 compound is formed on rods of niobium or vanadium by diffusion of tin or gallium, respectively, from a copper alloy matrix and wherein stabilization is provided by an external layer of copper. The |
| 4201737 |
Nebulizing apparatus |
May 6, 1980 |
| Improved nebulizing apparatus is disclosed for generating a heated liquid-dispensed-in-gas mist for administration to a patient undergoing aerosol therapy. The apparatus includes a novel fastening means for attaching a heater unit to the underside of a reservoir containing the liquid |
| 4198266 |
Oxygen delignification of wood pulp |
April 15, 1980 |
| In a process for delignifying wood pulp with oxygen, a pulp slurry and oxygen are introduced into an elongated reactor having a plurality of gravitational fall zones at which oxygen is dissolved in the liquid phase of the slurry. The length of the reactor is sufficient to provide the |
| 4195098 |
Method of preparing bacon slabs for slicing |
March 25, 1980 |
| Bacon slabs are prepared for slicing by removing slabs from a smokehouse at a temperature of approximately 120.degree. F. and cooling the same in two stages with an intervening equalization stage. In the first cooling stage, bacon slabs are reduced to an average temperature of between |
| 4194727 |
Shape cutting apparatus |
March 25, 1980 |
| Shape cutting apparatus includes a transverse beam rigidly mounted on a pair of spaced carriages which are provided with wheels for translation along a pair of parallel, longitudinal rails. A tracer and holder assembly therefor are mounted for translation along the transverse beam. Each |
