Patents Represented by Attorney, Agent or Law Firm Tuttle
  • Coupling device between a glass fiber and a dielectric waveguide
    Patent number: 5594824
    Abstract: A coupling device between a glass fiber and a dielectric waveguide integrated on a substrate. A low-loss and low-back-scatter, but cost-effective coupling is achieved by that the fiber end being reduced--principally by drawing under heat exposure until breaking--to a diameter in the order of typical core dimensions of dielectric waveguides. A fiber receiving portion is provided on the substrate dimensions reduced in a way substantially corresponding to the glass fiber and the tip thereof changing over into the waveguide to be coupled. The glass fiber, during assembly, need only be inserted into the receiving portion up to a stop, where it is centered with respect to the waveguide, without tolerances.
    Type: Grant
    Filed: December 13, 1994
    Date of Patent: January 14, 1997
    Assignee: Institut fur Mikrotechnik Mainz GmbH
    Inventor: Walter Kerndlmaier
  • Device for adjusting the length of a support
    Patent number: 5590862
    Abstract: A device for adjusting the length of a support composed of an outer tube and an inner tube slidably inserted in the outer tube, includes an opening extending radially through the outer tube, a spacer radially movably received in the opening and confronted with an outer surface of the inner tube, a housing mounted on the outer tube in confronting relation to the opening, and a wedge slidably inserted in the housing to force the spacer radially inwardly against the inner tube. With this construction, the inner tube and the outer tube can be firmly fastened together with a great tightening force without damaging the inner tube. A stopper pivoted on the wedge and normally urged upward by a spring is able to preclude an unintended omission of driving the wedge or an incompletely driven or tightened condition of the wedge.
    Type: Grant
    Filed: November 18, 1994
    Date of Patent: January 7, 1997
    Inventor: Tatsuo Ono
  • Device for producing a nonwoven fabric made of fiber material
    Patent number: 5590442
    Abstract: A device for producing nonwoven fabric with a carding machine 3 and a nonwoven fabric layering apparatus 2. A web storage device 5 with a variable storage volume is arranged between the web producer 3 and the nonwoven fabric layering apparatus 2. The web storage device 5 is controlled by the layering belts 8, 9 of the non-woven fabric layering apparatus 2. The rotational speed VB of the layering belts 8, 9 is variable and fluctuates in rhythm with the absolute traveling speed VL of the layering carriage in the inlet area 10. The web storage device 5 is emptied and filled at the same rhythm as the web 4 by control coupling.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: January 7, 1997
    Assignee: Autefa Maschinenfabrik GmbH Augsburg
    Inventors: Herwig Hirschek, Manfred Schaffler
  • Radio-frequency plasma source
    Patent number: 5592055
    Abstract: A plasma source is described, comprising a discharge chamber (1) bounded by a base wall (5) and by a lateral wall (3), a system (7) for the admission of gas into said discharge chamber, a system of electrodes (13, 15) which are associated with said discharge chamber (1) and which are connected to a radio-frequency generator (17), and which apply an oscillating electric field within the discharge chamber, and means (9, 11) for generating a static magnetic field in said discharge chamber. Coaxially with said discharge chamber (1) there are disposed a first and a second electrode (15; 13; 13X), at least one of which has an annular extent and is disposed in an intermediate position along the axial extent of the discharge chamber, said two electrodes (15; 13; 13X) being connected to two poles of the radio-frequency generator.
    Type: Grant
    Filed: October 17, 1995
    Date of Patent: January 7, 1997
    Assignee: Proel Tecnologie S.p.A.
    Inventors: Marco Capacci, Giovanni E. Noci
  • Method and apparatus for detecting the onset of flooding of an ultrasonic atomizer
    Patent number: 5588592
    Abstract: Deleting the onset of flooding of a surface of an ultrasonic atomizer having an ultrasonic transducer with liquid to be atomized, in particular liquid fuel in connection with heaters, wherein the natural resonance frequency of the vibrating ultrasonic transducer is monitored for changes in frequency, and a flooding signal reporting a flooded condition is produced when a drop in resonance frequency over a previously detected resonance frequency is detected whose rate of decrease exceeds a set minimum threshold.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: December 31, 1996
    Assignee: J. Eberspacher
    Inventor: Robert F. Wilson
  • Portable booster battery
    Patent number: 5589292
    Abstract: In a tool for boosting (jump starting) a vehicle, it is know that there is a battery as a power source and booster cables to bring the energy to the engine. In this invention, the battery and the cables are incorporated into one unit which includes the battery, the cables and protective holsters (housing) to lodge the cables. The holsters are an integral part of the unit and swivel at 90.degree. (degrees) to permit easy access. In this way, everything can be carried in one hand. Also, because the unit can be easily placed close to the engine, the cables can be much shorter than regular booster cables. It is easier to use since there are only two connections to make instead of four. Finally, the holsters, which house the booster clips protect the user from short circuits.
    Type: Grant
    Filed: August 9, 1994
    Date of Patent: December 31, 1996
    Assignee: Booster Pac International Corporation
    Inventor: Luc Rozon
  • Process for preparing a heterojunction bipolar transistor
    Patent number: 5587327
    Abstract: A process for preparing a bipolar transistor for very high frequencies is described, which is especially advantageous for the preparation of heterobipolar transistors and leads to components with low parasitic capacities and low base lead resistance. The process includes forming a structured first layer with collector zone and insulation areas surrounding the collector zone on a monocrystalline lead layer. A series of monocrystalline transistor layers are grown on the first layer over the collector zone by differential epitaxy and a series of polycrystalline layers is grown at the same time over the insulation areas. A series of polycrystalline layers is designed as a base lead.
    Type: Grant
    Filed: May 23, 1995
    Date of Patent: December 24, 1996
    Assignees: Daimler Benz AG, Temictelefunken Microelectronic GmbH
    Inventors: Ulf Konig, Andreas Gruhle, Andreas Schuppen, Horst Kibbel, Harry Dietrich, Heinz-Achim Hefner
  • Apparatus for digging soil foundation and method for constructing underground wall by using the apparatus
    Patent number: 5586840
    Abstract: The digging bits system contains left, right and central cylindrical digging bits and left and right plate digging bits being installed between the cylindrical digging bits, respectively. To the cylindrical digging bits, percussion force and turning force are applied. Each of the cylindrical digging bit contains tip, intermediate and upper end tubular body and is provided with a pore therein, respectively. To each of the tip tubular body, a bit edge is fixed, respectively. To both of the upper and the under end sides of the middle tubular body, a cam is provided in one unit with the tubular body, respectively. Each of the plate digging bits contains a sleeve, a central sleeve and a plurality of bit pieces, respectively. The cylindrical digging bits are rotatably connected with each other via a connecting member.
    Type: Grant
    Filed: July 28, 1995
    Date of Patent: December 24, 1996
    Assignee: Concrete Coring Company
    Inventors: Tadashi Nishio, Shuichi Fukuda
  • Window shade
    Patent number: 5586631
    Abstract: A window shade, in which a winding shaft, which is rotatably mounted with its ends on stationary pivot pins, can be coupled with a drive member at one of its ends. At least one rolling body is arranged in a recess, which is wedge-shaped in the circumferential direction, between an inner jacket surface of a pivot sleeve projection, which is rigidly mounted on the pivot pin, and an outer jacket surface of a shaft sleeve projection, which is rigidly mounted on the winding shaft. The rolling body acts as a locking member and is clamped in the wedge-shaped recess and can be released from the clamped position by an opening element movable by the drive member in the direction of rotation.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: December 24, 1996
    Assignee: Benthin Aktiengesellschaft
    Inventor: Siegfried Benthin
  • Method and apparatus for treating stitches of knit articles
    Patent number: 5586453
    Abstract: Apparatus for the removal of one or more stitches of a knit article from the needles of a knitting machine and for the transfer and placement thereof onto other knitting members of the same or other machine. The apparatus including a device for driving each of the needles forming the stitches in the direction of their respective longitudinal axis; a device for removal of the stitches from the needles and the transfer thereof onto other knitting members of the same or other machine; and a device for supporting and/or driving the device for the removal and transfer of the stitches.
    Type: Grant
    Filed: August 24, 1995
    Date of Patent: December 24, 1996
    Inventors: Alberto Frullini, Paolo Frullini
  • Filter for separating pollutants from flue gases
    Patent number: 5586995
    Abstract: A filter for separating pollutants from flue gases with a filter housing and with a plurality of filter boxes arranged therein at spaced locations horizontally one on top of another or vertically next to one another. These filter boxes contain the filter medium, which may be activated carbon, open-hearth furnace coke or a similar material. The filter boxes are sprayed with water via nozzles. The sprayed surfaces of the filter boxes are correspondingly designed as surfaces permeable to water. Flue gases flow into the filter boxes from the bottom. These surfaces of the filter boxes are correspondingly permeable to gas. A water collection box with vertical gas flow pipes, from which the collected water is pumped off and reused for spraying with water, is located under the filter boxes.
    Type: Grant
    Filed: March 7, 1995
    Date of Patent: December 24, 1996
    Assignee: Man Gutehoffnungshutte Aktiengesellschaft
    Inventors: Frohmut Vollhardt, Jurgen R. Heering
  • Filter nozzle for injection molding machines processing thermoplastics
    Patent number: 5587076
    Abstract: A filter is inserted into a cylindrical hole of a nozzle body 1. The filter has an axial blind hole, which communicates with transverse or radial holes. The transverse holes open into peripheral longitudinal trap channels, which are axially open against a collection space. Via slot-like openings, the trap channels are connected to second or clean channels, which communicate with an outlet opening of the nozzle body. A flushing opening, which can be closed by a screw, leads from the collection space to the outside. When foreign bodies have accumulated in the trap channels, the flushing opening is opened, and the foreign bodies are flushed out with an injection stroke. As a result, the foreign bodies can be removed rapidly and in a simple manner.
    Type: Grant
    Filed: May 19, 1995
    Date of Patent: December 24, 1996
    Assignee: Herzog AG
    Inventor: Kurt Herzog
  • Dual-circuit vehicle heater
    Patent number: 5586721
    Abstract: The invention relates to a vehicle heater with two circuits. One circuit leads from the vehicle's engine via a heating device and a heat exchanger back to the engine. The other circuit leads from the heating device via the heat exchanger back to the heating device. These two circuits may be automatically switched by a single valve, a two-way valve structurally combined with a check valve, so that no auxiliary power, e.g. current from the vehicle battery, is needed.
    Type: Grant
    Filed: August 17, 1995
    Date of Patent: December 24, 1996
    Assignee: J. Eberspacher
    Inventor: Michael Humburg
  • Plastic centre whose dimensions can be reduced, for forming spools of yarn to be dyed
    Patent number: 5584439
    Abstract: A center with elongated slots (3) for reducing axial and transverse sections of the center. The elongate slots (3) are arranged in two series of intersecting helical alignments; on each of these alignments slots are arranged alternately with their greatest dimension along said helical alignment and transversely to it; at each intersection is a slot belonging to both alignments. When an axial compressive force is applied the slots shrink, thereby simultaneously reducing the axial and diametrical dimensions.
    Type: Grant
    Filed: August 15, 1994
    Date of Patent: December 17, 1996
    Inventor: Tiziano Romagnoli
  • Device for reducing the generation of noise in fans
    Patent number: 5584653
    Abstract: A device for reducing the generation of noise in a fan (11) having a gas intake channel (13), a gas discharge channel (14) and a gas propulsion device (15), in particular a side channel fan for supplying combustion air in a heater. At least in the regions of the opening cross-section (18, 19) of the gas intake channel (13) and/or the gas discharge channel (14) there is disposed structure for inducing a flow resistance (interference structure 20, 21).
    Type: Grant
    Filed: November 1, 1995
    Date of Patent: December 17, 1996
    Assignee: J. Eberspacher
    Inventors: Erich Frank, Fritz Mohring
  • Process for quality control in the production of tablets by pressing
    Patent number: 5585113
    Abstract: A process for quality control in tablet production by pressing by means of influencing the pressing force, the weight, the hardness, and the height of the tablets by means of a control mechanism. The task of the invention is to develop a process of the type according to this concept, according to which all necessary control mechanisms for maintaining a constant tablet weight, tablet height, and tablet hardness operate in such a way that a rapid control of deviations is assured, and according to which, the limiting values can be optimized automatically, is hereby resolved in that the control system is divided into several influential and essentially parallel running control circuits for the simultaneous control of the pressing force as well as the tablet parameters of weight, height, and hardness.
    Type: Grant
    Filed: September 9, 1994
    Date of Patent: December 17, 1996
    Assignee: Korsch Pressen GmbH
    Inventor: Wolfgang Korsch
  • Presser foot for preparing piping and ornamental seams
    Patent number: 5582120
    Abstract: A presser foot is provided with a detachably arranged base. The base contains a needle passage opening and includes a plurality of guide grooves located at mutually spaced locations from one another on the under side of the base. The guide grooves are used for preparing pipings which extend in parallel to one another in the fabric. The middle guide groove extends centrally to the needle passage opening. The width of the needle passage opening essentially corresponds to a maximum overstitch width of the needle of a zig-zag sewing machine. A second and third guide groove extend, in a short distance, to the side of the needle passage opening. A fourth guide groove is provided with a distance from the middle guide groove which exactly corresponds to the mutual distance between the second and third guide grooves.
    Type: Grant
    Filed: July 27, 1995
    Date of Patent: December 10, 1996
    Assignee: G.M. Pfaff Aktiengesellschaft
    Inventors: Helmar Holl, Peter Schuett
  • Intercept device for flying objects
    Patent number: 5583311
    Abstract: An intercept device for flying objects is formed of a lightweight, small-volume, packable structure made of a tear-resistant, pliable material, which can be stretched to a large, two-dimensional or three-dimensional expansion by means of a deployment device. To reduce the velocity of the intercepted flying objects, activatable, aerodynamic resistance bodies are incorporated into the structure. To end the intercept procedure, elements are integrated into the structure, which consist of material that can be destroyed from outside by means of high-energy beams and/or chemical reagents, or that destroys itself, or the structure as a whole consists of such material.
    Type: Grant
    Filed: March 17, 1995
    Date of Patent: December 10, 1996
    Assignee: Daimler-Benz Aerospace AG
    Inventor: Ulrich Rieger
  • Extensible device for supporting objects, especially illumination devices as in photographic studios and the like
    Patent number: 5582378
    Abstract: A structure composed of articulated rods extending between a fixed attachment point and a free attachment point for the object to be supported. This structure is extensible in the direction of the straight line joining the fixed attachment point and the free attachment point, and is symmetrical about this line and more or less rigid in directions perpendicular to the direction of extension. The spool rotates about a pin inserted in said structure at a point close to the free attachment point. A cord is connected to a spring for winding up the cord. The cord has one end fixed to said structure close to said line at a point between the fixed attachment point and the spool. The other end of the cord is fixed to the circumference of the spool.
    Type: Grant
    Filed: October 4, 1994
    Date of Patent: December 10, 1996
    Assignee: Industria Fototecnica Firenze S.r.l.
    Inventor: Giuliano Fusi
  • Watch bracelet
    Patent number: D377154
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: January 7, 1997
    Assignees: Montres DuRoy, F. Rumo
    Inventor: Freddy Rumo