Patents Represented by Law Firm Hall & Houghton
  • Patent number: 4411244
    Abstract: An air/fuel ratio compensating device is provided for association with an internal combustion engine having a fuel control valve, air suction pipe means and pedal accelerator means, the compensating device including an area flow metal system made up of a flow detection valve positioned upstream in the air suction pipe means and operatively associated with the fuel control valve, a flow control valve positioned downstream in the air suction pipe means in series with the flow detection valve and being operatively connected to the accelerator pedal means, the area flow meter system enabling the difference in pressure existing on opposite sides of the flow detection valve to be maintained at a predetermined value to insure that the amount of air flow is proportional to the opening area of the flow detection valve thus permitting a determination of the amount of air flow on the basis of the opened area of the flow detection valve, a feedback control mechanism for controlling the area control flow meter and includi
    Type: Grant
    Filed: October 1, 1980
    Date of Patent: October 25, 1983
    Assignee: NTN Toyo Bearing Co., Ltd.
    Inventors: Kei Kimata, Taugito Nakazeki, Yoshinobu Yasuda
  • Patent number: 4401937
    Abstract: An output transistor is serially connected to a field coil in a battery charging AC generator to break and make a field current through it under the control of a control transistor to adjust a rectified voltage from the generator to a predetermined magnitude. Another transistor is connected to the output transistor to respond to a collector-to-emitter voltage of the latter in excess of a predetermined magnitude as sensed by it to turn the output transistor off.
    Type: Grant
    Filed: September 30, 1980
    Date of Patent: August 30, 1983
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Mitsuharu Morishita
  • Patent number: 4385749
    Abstract: A method and apparatus is provided for repairing the worn tap hole of a steel converter to restore same to a desired diameter wherein elongated jet spray means are placed centrally into and in close proximity to the surface of the damaged tap hole and thereafter refractory mortar repair material is sprayed against the surface of the inner circumference of the worn tap hole wall to restore the diameter of same to the desired dimension.
    Type: Grant
    Filed: April 28, 1981
    Date of Patent: May 31, 1983
    Inventor: Gerardus A.C. van der Linden
  • Patent number: 4385647
    Abstract: A warp stop motion of the dropper type for automatically stopping the loom associated therewith upon breakage of a warp yarn, including a pair of side frames, each of which doing away with conventional T-shape, is of inverted L-shape comprising a horizontal arm portion for supporting contact bars and separator bars and a vertical arm portion whose upper end joins one end of the horizontal arm portion and whose lower end joins a horizontal shaft. Each side frame has recesses formed in the inner surface thereof for receiving one of the respective ends of the separator bars, and a spring is disposed between one end of each separator bar and the bottom of each recess.
    Type: Grant
    Filed: February 26, 1981
    Date of Patent: May 31, 1983
    Assignee: Nishiki Sangyo Kabushiki Kaisha
    Inventor: Narachiyo Nishiguchi
  • Patent number: 4314524
    Abstract: Apparatus comprising a vertically movable arm member pivoted at one end about a vertical axis and a chucking head mounted at the other distal end thereof, for engagement with and holding an apertured article, said chucking head being arranged to rotate the chucked article and whereby apertured articles being successively fed to a loading position are subjected to a revolving movement and an upward movement while being transferred to an unloading position via a working position where they are subjected to a desired treatment.
    Type: Grant
    Filed: March 5, 1980
    Date of Patent: February 9, 1982
    Assignee: NTN Toyo Bearing Company, Limited
    Inventor: Osamu Deguchi
  • Patent number: 4314605
    Abstract: A condenser characterized in that a pair of heat transmitting surfaces having opposed longitudinal grooves are arranged with the ridges of the longitudinal grooves contacted with or closely adjacent to each other to define steam passageways by said opposed longitudinal grooves so that the condensate in the opposed longitudinal grooves is collected in the contacted regions or between the closely adjacent regions by surface tension and allowed to flow down.
    Type: Grant
    Filed: February 22, 1977
    Date of Patent: February 9, 1982
    Assignee: Hisaka Works Ltd.
    Inventors: Hiroyuki Sumitomo, Masafumi Doi, Kazuyuki Kobayashi, Katsutoshi Fukami, Kenzo Kawanishi
  • Patent number: 4285313
    Abstract: An air flow measuring device comprising a flow detection valve located in a conduit and a servo-mechanism operable to maintain the difference in pressure across the detection valve at a control value, the servo-mechanism including a pressure-sensitive amplifier for sensing any deviation of the pressure difference from the control value by means of a pressure-responsive diaphragm and producing an amplified actuating pressure in response to such deviation and a valve actuator connected to the amplifier for receiving the actuating pressure and operatively connected to the flow detection valve for positioning same with the actuating pressure, wherein a resiliently deformable bellows filled with a given mass of a gas and having an effective pressure-sensitive-area equal to (the effective pressure-sensitive-area of the diaphragm).times.(the control value under a reference condition of air).div.
    Type: Grant
    Filed: June 29, 1979
    Date of Patent: August 25, 1981
    Inventors: Tsugito Nakazeki, Yoshinobu Yasuda
  • Patent number: 4285312
    Abstract: A gas flow measuring mechanism having a feedback control mechanism comprising a flow detection valve and a flow control valve which are in series with each other and placed in a channel, an area flowmeter for keeping constant the difference in the pressures existing on opposite sides of said flow detection valve and determining the amount of incoming air by the opening area of the flow detection valve, a pressure-sensitive amplifier mechanism for sensing the deviation of the difference in the pressures existing on opposite sides of the flow detection valve from a set pressure difference on the basis of the displacement of a pressure setting diaphragm, and a valve opening mechanism for controlling the opening and closing of the flow detection valve, wherein a bellows enclosing a gas at a reference temperature and under a reference pressure and having an effective area equal to (effective area of pressure difference setting diaphragm).times.
    Type: Grant
    Filed: April 11, 1979
    Date of Patent: August 25, 1981
    Assignee: NTN Toyo Bearing Co., Ltd.
    Inventors: Tsugito Nakazeki, Yoshinobu Yasuda
  • Patent number: 4283889
    Abstract: A greenhouse structure with flooring means and side and end wall means defining a plant growing area has a roof structure means comprising a ridge above said growing area and rafter means extending from said ridge downwardly and outwardly past said side wall means to terminal end portions at which anchor means are provided securing said rafter ends to said flooring means. It also has a slidable roof means mounted on said rafter means for movement to different positions thereon including a first position in which it extends from said ridge to said side wall means and preferably past the same for forming an overhang or eave therebeyond, and a second position in which it lies between said side wall means and said anchor means. The slidable roof means in the preferred embodiment is water shedding and heat insulating, and may be formed of opaque fiber glass, but preferably is formed of aluminum sheet embossed for strength and having a heat insulating layer on its under side.
    Type: Grant
    Filed: December 19, 1979
    Date of Patent: August 18, 1981
    Inventor: Michael D. Dunn
  • Patent number: 4270257
    Abstract: There is disclosed a fuel injection valve for internal combustion engines, which is used in combination with a fuel injection device for intermittent injection of fuel and which comprises a main body having a passageway extending between a fuel inlet and a fuel outlet, a valve member which cooperates with a valve seat disposed in the outlet and which is movable between a closed position and a fully open position in response to the pressure of the fuel fed into the passageway, the valve member being made up of a shaft member and a valve head, and is manufactured in such a way that a valve head made of a steel ball is welded by an instantaneous current passage welding process to one end of the shaft member and that the steel ball is cut perpendicularly to the axis on a smaller circle toward the shaft member than the equator of the steel ball so as to form an edge where the fuel jet flares.
    Type: Grant
    Filed: October 7, 1977
    Date of Patent: June 2, 1981
    Assignee: NTN Toyo Bearing Co. Ltd.
    Inventors: Kei Kimata, Shoichi Fukunaga
  • Patent number: 4255486
    Abstract: The strength of the bond obtained between substates with the aid of phenoplasts, modified phenoplasts and/or epoxy resins, e.g. between fibrous material and an elastomer on vulcanization thereof, is improved by applying, to at least one of the substrates, in addition to a preformed phenoplast, modified preformed phenoplast, and/or preformed epoxy resin, and drying thereon before the assembly thereof with the other substrate, as an adhesion promoter, a quantity of m-aminophenol, which may be blended in a phenoplast adhesive, such as an RF dip or an RFL dip, or may be blended in the elastomer latex used for forming an RFL dip. Adhesive/promoter blends and latex/promoter blends for forming the same are also disclosed.This is a divison of application Ser. No. 951,040, filed October 13, 1978, now abandoned, which in turn is a division of Ser. No. 754,182, filed December 29, 1976, now U.S. Pat. No. 4,131,584 which in turn is a division of Ser. No. 422,777, filed December 7, 1973, now U.S. Pat. No.
    Type: Grant
    Filed: October 11, 1979
    Date of Patent: March 10, 1981
    Assignees: Marion Darrah, Joseph Y. Houghton
    Inventors: Oliver W. Burke, Jr., Barbara P. Hunt
  • Patent number: 4255410
    Abstract: A processing method is provided in which flows of separate fluid streams, at least one of which is liquid, are intimately contacted and subjected to centrifugal force by being passed as a cocurrent turbulent flow circumferentially, axially, and inwardly and outwardly through sets of openings in the side walls of one or more cylindrical chambers having first and second elements coaxially positioned in a housing, the openings being provided with flow guide means for directing said cocurrent flows in the same circumferential direction at all times, and the axial direction of passage of said cocurrent flows in preferred embodiments of the invention being non-ascending and hence not counter to the force of gravity.
    Type: Grant
    Filed: September 28, 1977
    Date of Patent: March 10, 1981
    Assignee: Deuterium Corporation
    Inventor: Jerome S. Spevack
  • Patent number: 4244924
    Abstract: In a dual temperature isotope exchange system--exemplified by exchange of deuterium and protium between water and hydrogen sulfide gas in hot and cold towers, in which the feed stream (water) containing the desired isotope is passed through a pair of towers maintained at different temperatures wherein it effects isotope exchange with countercurrently circulated auxiliary fluid (H.sub.2 S) and is impoverished in said isotope and then disposed of, e. g. discharged to waste,--the flow of isotope enriched auxiliary fluid between said towers (hot H.sub.
    Type: Grant
    Filed: July 14, 1975
    Date of Patent: January 13, 1981
    Assignee: Deuterium Corporation
    Inventor: Jerome S. Spevack
  • Patent number: 4243566
    Abstract: The preparation of stable aqueous latices from solvent dispersions of elastomers and other high polymer compositions has presented problems including excessive viscosity during processing and foaming, which have produced losses and increased costs. Herein combinations of steps are disclosed which reduce or eliminate various of these problems and enable the preparation of stable latices of high solids content. The process in common with that of related copending applications is characterized, inter alia, by the establishment of a flow of steam as a continuous phase into which an emulsion of a cement of the polymer is dispersed as an aerosol of latex droplets in a solvent-vapor continuum, followed by coalescence of the latex droplets and separation of the resulting coalesced liquid phase from the resulting solvent-vapor phase.
    Type: Grant
    Filed: January 8, 1975
    Date of Patent: January 6, 1981
    Assignee: Exxon Research and Engineering Company
    Inventor: Oliver W. Burke, Jr., deceased
  • Patent number: 4242305
    Abstract: Certain impure steams, especially those from geothermal sources, are polluted with hydrogen sulfide, ammonia, carbon dioxide, other gases, and finely divided particulate solid matter in a form resembling dust or smoke. These contaminants reduce the efficiency of the steam as a heat transfer fluid, are detrimental to equipment utilizing steam as an energy source, and result in environmental pollution or expensive requirements for limiting the same. Herein apparatus is provided wherein so polluted steam is selectively processed in the gaseous state upstream of said equipment to remove hydrogen sulfide therefrom, with or without removing other pollutants, to recover valuable materials therefrom, and to improve the utility of the steam as an energy source.
    Type: Grant
    Filed: August 18, 1978
    Date of Patent: December 30, 1980
    Assignee: Deuterium Corporation
    Inventor: Jerome S. Spevack
  • Patent number: 4241119
    Abstract: The invention relates to a shrinkable sleeve device easily assembled with a body to be protected thereby. It comprises a dimensionally heat unstable sheet-like portion to embrace the body with unique means for securing edge portions thereof together. The device is particularly advantageous for application and use in restricted locations and for providing a protective sleeve by which cable ducts will not be unduly impeded.
    Type: Grant
    Filed: January 17, 1977
    Date of Patent: December 23, 1980
    Assignee: The Post Office
    Inventor: Normaan E. Smart
  • Patent number: 4239028
    Abstract: An air/fuel ratio compensating device is provided for association with an internal combustion engine having a fuel control valve, air suction pipe means and pedal accelerator means, the compensating device including an area flow metal system made up of a flow detection valve positioned upstream in the air suction pipe means and operatively associated with the fuel control valve, a flow control valve positioned downstream in the air suction pipe means in series with the flow detection valve and being operatively connected to the accelerator pedal means, the area flow meter system enabling the difference in pressure existing on opposite sides of the flow detection valve to be maintained at a predetermined value to insure that the amount of air flow is proportional to the opening area of the flow detection valve thus permitting a determination of the amount of air flow on the basis of the opened area of the flow detection valve, a feedback control mechanism for controlling the area control flow meter and includi
    Type: Grant
    Filed: May 7, 1979
    Date of Patent: December 16, 1980
    Assignee: N T N Toyo Bearing Co. Ltd.
    Inventors: Kei Kimata, Tsugito Nakazeki, Yoshinobu Yasuda
  • Patent number: 4221774
    Abstract: A new combination is disclosed of (I) a process for producing a substance enriched in a desired isotope of hydrogen and/or oxygen from a flow of liquid substance, e.g. water which becomes depleted in its content of said isotope, and (II) replenishing the liquid substance with said isotope by (a) direct contact with a flow of steam from a source external to the process, preferably geothermal steam, and (b) supplying feed flow of the process (I) from the so replenished liquid substance.
    Type: Grant
    Filed: August 6, 1976
    Date of Patent: September 9, 1980
    Assignee: Deuterium Corporation
    Inventor: Jerome S. Spevack
  • Patent number: 4218431
    Abstract: Carbonate waters from subterranean and other sources which are contaminated with dissolved sulfides contribute to environmental pollution. Herein the sulfides are removed without otherwise polluting the environment by conversion to insoluble metal sulfide reaction products separable from the carbonate waters with production of CO.sub.2 -free H.sub.2 S as a valuable byproduct. The dissolved sulfides are reacted with metal salt to form an insoluble sulfide reaction product from which the decontaminated carbonate water is separated, the reaction product is then decomposed by reacting with an aqueous acid comprising the negative radical of the metal salt thus producing H.sub.2 S essentially free of CO.sub.2 as a valuable product. The reformed metal salt is recycled. Conditions are provided for extracting ammonia contained in the carbonate water and for removing arsenic and/or mercury matter therefrom.
    Type: Grant
    Filed: May 11, 1978
    Date of Patent: August 19, 1980
    Assignee: Deuterium Corporation
    Inventor: Jerome S. Spevack
  • Patent number: 4213574
    Abstract: A new and improved grooved traverse drum for winding yarn into a cone cheese is provided which is characterized by having the traverse drum end adjacent the small end of the cone cheese being of a reduced diameter for a major proportion of its circumference so as to eliminate slippage therebetween and thereby minimize possible yarn damage.
    Type: Grant
    Filed: April 25, 1978
    Date of Patent: July 22, 1980
    Assignee: Kabushiki Kaisha Mino Seisakusho
    Inventors: Masao Mino, Takeshi Ohno