Patents Represented by Attorney Charles W. Helzer
  • Patent number: 5208499
    Abstract: A commutating brush assembly for rotating electrical equipment is constructed to suppress electromagnetic/radio frequency interference emissions, particularly in the radio frequency range. This is achieved by fabricating the EMI/RFI suppressing brush holder assembly from a material that itself suppresses EMI/RFI emissions generated by electromagnetic apparatus such as motors, generators, rotary switch gears, etc. The EMI/RFI emission suppression capability of the novel assembly may be further enhanced by the addition of certain add-on electrical components such as capacitors or radio frequency choke coils and the like.
    Type: Grant
    Filed: January 16, 1992
    Date of Patent: May 4, 1993
    Assignee: Carbone-Lorraine of North America
    Inventors: Harry C. Barber, Kenneth P. Green, Otway A. Southall
  • Patent number: 5188738
    Abstract: A new alternating current process and system for treatment of blood and/or other body fluids and/or synthetic fluids from a donor to a recipient or storage receptacle or in a recycling system using novel electrically conductive treatment vessels for treating blood and/or other body fluids and/or synthetic fluids with electric field forces of appropriate electric field strength to provide electric current flow through the blood or other body fluids at a magnitude that is biologically compatible but is sufficient to render the bacteria, virus, parasites and/or fungus ineffective to infect or affect normally healthy cells while maintaining the biological usefulness of the blood or other fluids. For this purpose low voltage alternating current electric potentials are applied to the treatment vessel which are of the order of from about 0.
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: February 23, 1993
    Inventors: Steven Kaali, Peter M. Schwolsky
  • Patent number: 5185086
    Abstract: A method and system for the treatment of blood and/or other body fluids (such as amniotic fluids) as well as synthetic fluids such as tissue culture medium whereby a fluid to be treated is mechanically filtered for elimination of particles contained therein which exceed 0.2 microns in size (or some other minutely small size) and in addition subjecting the fluid being treated to electric field forces in the microwatt/milliwatt region induced by relatively low voltage of a few volts and low current density which does not exceed values which could impair the biological usefulness and characteristics of the blood or other fluid being treated.
    Type: Grant
    Filed: July 16, 1991
    Date of Patent: February 9, 1993
    Inventors: Steven Kaali, Peter M. Schwolsky
  • Patent number: 5159580
    Abstract: A uniquely designed acoustic transducer comprising a stack of piezoceramic elements (other piezoelectric materials may be used) mounted upon a tuned, shaped transmit/receive head made of hardened metal alloy. The ceramic stack is preloaded to the head via a stress bolt. Insulator electrodes used in the ceramic stack are selected to minimize compliance in the stack for maximum efficiency. All the material properties, sizes, weights, etc., as well as the overall transducer design are carefully selected to act in combination to match the impedance of the load (i.e. metal structural framework). The diameter of the tip of the tuned, shaped driving head is sized such that when clamped to a metal framework, the base metal of the material just under the tip is compressed to or slightly beyond its yield point. This eliminates the requirement for surface preparation because any coatings will be displaced under the applied pressure and any surface irregularities will be flattened out.
    Type: Grant
    Filed: October 3, 1991
    Date of Patent: October 27, 1992
    Assignee: Ocean Systems Research, Inc.
    Inventors: James K. Andersen, John H. Thompson, James W. White
  • Patent number: 5159222
    Abstract: A brush holder plate assembly comprising a brush holder plate fabricated from electrically insulating thermoplastic material and having a plurality of sets of spaced-apart, parallel, raised guiding and support rails integrally formed on one surface of the plate. The plate further has a centrally formed aperture of sufficient cross sectional dimension to be slipped over the commutator of an electric machine after complete assembly of all the parts of the machine. The sets of spaced-apart, parallel, raised guiding and support rails project radially outward away from the centrally formed aperture like the spokes of a wheel. A plurality of snap-in-place, brush holder cartridges are removably secured by slide catches to the respective sets of spaced-apart parallel raised guiding and support rails for physically supporting commutating brushes in an array surrounding the commutator of the electric machine with one exposed end of each brush in physical and electrical contact with the commutator.
    Type: Grant
    Filed: December 7, 1990
    Date of Patent: October 27, 1992
    Assignee: Carbone-Lorraine of North America
    Inventor: Otway A. Southall
  • Patent number: 5139684
    Abstract: A new process and system for treatment of blood and/or other body fluids and/or synthetic fluids from a donor to a recipient or storage receptacle or in a recycling system using novel electrically conductive treatment vessels for treating blood and/or other body fluids and/or synthetic fluids with electric field forces of appropriate electric field strength to provide electric current flow through the blood or other body fluids at a magnitude that is biologically compatible but is sufficient to render the bacteria, viruses, and/or fungus ineffective to infect normally healthy cells while maintaining the biological usefulness of the blood or other body fluids. For this purpose the low voltage electric potentials applied to the treatment vessel should be of the order of from about 0.2 to 12 volts and should produce current flow densities of from one microampere per square millimeter of electrode area exposed to the fluid being treated to about one milliampere per square millimeter.
    Type: Grant
    Filed: November 16, 1990
    Date of Patent: August 18, 1992
    Inventors: Steven Kaali, Peter M. Schwolsky
  • Patent number: 5123476
    Abstract: An electromagnetic, levitation metal pipe casting method and system which provides an improved and simplified combined heat exchanger/levitator/containment coil assembly that comprises a single, outer multi-phase traveling wave coil structure and an inner solenoid coil structure. The outer, multi-phase traveling wave coil structure is positioned radially outside and coaxial with solidifing pipe during the casting process. The inner solenoid coil is positioned coaxial with and inside the pipe being cast. The outer multi-phase traveling wave coil and the inner solenoid coil are operated at substantially different frequencies and excitation current magnitudes. The improved system and method offer several functional and physical advantages over previous known levitation pipe casting systems. The principal improved features are:1. Simplified operating and control procedures.2. Simplified inner coil fabrication.3. Simplified electrical and coolant connections to the inner coil.4.
    Type: Grant
    Filed: August 17, 1990
    Date of Patent: June 23, 1992
    Assignee: Showa Electric Wire and Cable Co., Ltd.
    Inventor: James A. Fealey
  • Patent number: 5123168
    Abstract: A practical and safe heavy duty hedge, bush and brush cutter having a forwardly mounted dual-sided tine set that comprises a means for readily cutting flexible heavier limbs. The forwardly mounted tine set preferably is part of a comb-like attachment which includes a number of additional dual-sided tine sets that define a plurality of gathering, holding and cutting areas. The attachment is designed so that it can be mounted from one side of a conventional chain saw blade without removing the chain blade from the chain guide and yet provides stopping surfaces on both sides of the guide bar and chain blade of the saw to support severed limbs and branches in such a manner that bias cutting of flexible limbs and shredding of branches is prevented. The comb-like attachment including the dual-sided tine sets defining the gathering, holding and cutting areas for branches to be cut can be installed and removed from one side of the chain saw blade without the use of special techniques or tools.
    Type: Grant
    Filed: November 6, 1991
    Date of Patent: June 23, 1992
    Inventor: William E. Lyons
  • Patent number: 5039862
    Abstract: A light switched electron beam source employing a common photo-emitter cathode and at least two light emitting sources of monochromatic light, such as laser diodes, light emitting diodes and the like. A light optical collimating and aperture sub-system transmits the light images from the two or more light emitting sources onto a prism or other optical element for diverting the path of the light images onto a common path. The common photo-emitting cathode is positioned in the common path for selective excitation by the respective light emitting sources. An electron optical subsystem is coupled to the output from the common photo-emitter cathode for collimating and further sharpening the electron beam pattern and for projecting it upon a target plane which may comprise an integrated circuit structure upon which patterns are to be written.
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: August 13, 1991
    Inventors: Donald O. Smith, Kenneth J. Harte
  • Patent number: 5038817
    Abstract: A narrow accessway sewage pump remotely operable, multi-part, quick connect/disconnect slide coupling comprising a fixed portion that forms a first part of a slide-together, bayonet-type coupling with a movable portion forming a second part of the coupling. The movable part of the coupling supports a liquid pump and slides together with and is physically supported by the fixed portion. A third slide stop valve portion is positioned intermediate both the fixed and movable portions and all three portions of the coupling have interiorly formed open passageways for passage of liquid therethrough. The passageways in the three portions all come into alignment upon the three portions being properly seated together in assembled relation.
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: August 13, 1991
    Assignee: Environment/One Corporation
    Inventors: Clark A. Henry, Eric F. Cabahug, Jack L. Cooley, Richard C. Grace
  • Patent number: 5022470
    Abstract: An autonomous ice penetrator/payload delivery system is provided which, when once launched from its parent vehicle will, upon reaching the surface of the ice automatically right itself to proper orientation with respect to the ice surface for penetration. A modified solid propellant rocket engine is used as the heat source to penetrate the ice rapidly and automatically is ignited upon the ice pentrator/payload containment vessel attaining proper orientation with its longitudinal axis substantially normal to the ice surface. The hot gasses of combustion produced by the modified rocket engine impinge upon the ice thereby melting it. As the ice is melted and penetrated, the penetrator/payload containment vessel will follow the receding ice surface either by gravity, or by motive forces provided by the modified rocket engine, or both.
    Type: Grant
    Filed: June 28, 1989
    Date of Patent: June 11, 1991
    Assignee: Ocean Systems Research, Inc.
    Inventors: James K. Andersen, James W. White
  • Patent number: 4932421
    Abstract: An electrified intrauterine device (IUD) is provided which has an IUD body member fabricated from materials which are physiologically compatible with human tissue and fluids and physically proportioned to be placed and retained within the uterus of a female mammal. Spaced-apart electrically conductive electrodes are formed on the IUD body member from electrically conductive materials that are physiologically compatible with human tissue and fluids. Self-contained electric batteries are supported within the IUD body member that forms a sealed outer casing of biologically inert material compatible with human tissue and fluids. The batteries are capable of producing an electromotive force of known voltage and current rating and are of a size to be inserted and retained within the uterus of a female mammal.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: June 12, 1990
    Inventors: Steven Kaali, Peter M. Schwolsky
  • Patent number: 4920401
    Abstract: In a bipolar transistor, around the border line of the surface of a base region formed on a semiconductor substrate is formed a base electrode having a constant width of less than one micron and made of polycrystalline silicon. An island shaped emitter region is formed in the base region and an emitter electrode is formed on the surface of the emitter region. The emitter electrode is electrically isolated from the base electrode by an insulating film extending between the periphery of the emitter region and the base electrode.
    Type: Grant
    Filed: March 14, 1985
    Date of Patent: April 24, 1990
    Assignee: Nippon Telegraph & Telephone Public Corp.
    Inventors: Tetsushi Sakai, Yoshizi Kobayasi, Hironori Yamauchi, Yoshinobu Arita
  • Patent number: 4919343
    Abstract: An anti-flooding sewage grinder pump liquid level control system in a separately mounted canister is provided for installation within and controlling operation of a sewage grinder pump installed within a sewage collection tank. Within the control canister, pneumatically operated electric control switches for controlling on/off operation of the sewage grinder pump and for redundant pump down of alarm high level flooding conditions, are provided. The control switches are mounted within one or more diving bell-type containment vessels for preventing flooding of the electric control switches in case of surge overloads of liquid sewage or failure of the primary on/off pneumatic/electrical control switch. In the event of flooding, the containment vessel will pressurize air in the top of the containment vessel and will actuate the alarm level control switch. The alarm level control switch is wired to provide redundant excitation to the sewage grinder pump motor.
    Type: Grant
    Filed: September 25, 1989
    Date of Patent: April 24, 1990
    Assignee: Environment/One Corporation
    Inventors: Frank W. Van Luik, Jr., Eric F. Cabahug
  • Patent number: 4913284
    Abstract: A method for the first day of issue authentication of rolls of original stamps wherein each stamp in the roll is attached to its neighbor by interconnected, perforated edges that form an integral roll of stamps. The roll of stamps to be authenticated is enclosed in an outer, flexible, clear plastic container that is sealed closed after insertion of the roll of stamps. A printing ink sensitive label is secured over the exterior of the closed end of the container in a manner to assure that the container has not been opened after insertion of the roll of stamps, closure and adherence of the label.
    Type: Grant
    Filed: September 8, 1988
    Date of Patent: April 3, 1990
    Inventor: Antonio A. Versaci
  • Patent number: 4911502
    Abstract: A seat comprising a seat portion the upper surface of which is inclined downwardly from front to back at an angle in excess of 10.degree. from the horizontal and a back support comprising support members which support the pelvic girdle on either side of the spine in that region of the pelvic girdle between the iliac crest and the posterior superior iliac spine.
    Type: Grant
    Filed: July 7, 1983
    Date of Patent: March 27, 1990
    Inventor: John D. Gorman
  • Patent number: 4873942
    Abstract: A holding fixture for plasma enhanced chemical vapor deposition processing of semiconductor wafers comprising a frame boat assembly for holding disk-shape semiconductor wafer workpieces to be subjected to a flow of reactant gases serially across the workpieces in a direction perpendicular to the broad faces of the workpieces. The boat holding fixture comprises a pair of upright, spaced-apart insulating frame end members having a first set of spaced-apart parallel, elongated insulating rods secured between the end members for holding the boat in assembled relation. An electrode supporting rack is secured within the boat for holding a plurality of flat, spaced-apart, electrically conductive electrodes in an upright position with the flat surfaces parallel to each other and perpendicular to the longitudinal axis of the boat.
    Type: Grant
    Filed: June 8, 1988
    Date of Patent: October 17, 1989
    Assignee: The Stackpole Corporation
    Inventor: George M. Engle
  • Patent number: 4865116
    Abstract: Dense, homogeneous tubular metal products such as pipe is cast in long lengths continuously by introducing liquid metal into the lower portion of an annular-shaped casting vessel. The liquid metal is withdrawn in the presence of an outer elongated upwardly travelling alternating electromagnetic levitation field and a second inner electromagnetic levitation field for maintaining the tubular liquid metal column in a substantially weightless and pressureless contact condition while solidifying. The resulting solidified tubular metal product is withdrawn from the upper portion of the field, cooled and further processed to result in a desired and product/and has a homogeneous, fully dense, fine grain structure due to continuous eddy current stirring by the levitating electromagnetic fields and a ripply, shiny exterior surface.
    Type: Grant
    Filed: June 28, 1988
    Date of Patent: September 12, 1989
    Assignee: General Electric Company
    Inventors: Jeffrey N. Peterson, Robert T. Frost
  • Patent number: D324993
    Type: Grant
    Filed: July 18, 1989
    Date of Patent: March 31, 1992
    Inventor: Donald R. Badger
  • Patent number: RE34162
    Abstract: A method of manufacturing controlled .Iadd.surface .Iaddend.electrical resistivity carbon fiber sheet products employing a carbonizable starting material, heating and drawing the starting material (if required), .Iadd.stabilizing and .Iaddend.oxidizing the starting material .Iadd.if required .Iaddend.at an elevated temperature of the order of 220 degrees Centigrade to effect molecular aromatic rearrangement of the starting material, .Iadd.partially .Iaddend.carbonizing the oxidized starting material at .[.an.]. elevated temperature .Iadd.values .Iaddend.in an oxygen free atmosphere within a furnace having an elevated temperature extending over a temperature range .Iadd.from about 370 degrees Centigrade .Iaddend. to about 1400 degrees Centigrade .[.by soaking the.]..Iadd.. The .Iaddend.starting material .Iadd.is soaked .Iaddend.at an elevated temperature for a predetermined period of time to provide a .Iadd.known .Iaddend.preselected .Iadd.surface .Iaddend.electrical resistivity to the .Iadd.partially .
    Type: Grant
    Filed: February 20, 1990
    Date of Patent: January 19, 1993
    Assignee: Zoltek Corporation
    Inventor: George P. Boyd, Jr.