Patents Represented by Law Firm Patterson & Keough
  • Patent number: 5836863
    Abstract: A support for input and output transducers of a hearing aid is implanted in the middle ear. The support, which is attached to the mastoid bone, can be a single component or comprise two adjustable components. In one embodiment, an arm extends from the proximal end of the support towards an access hole created behind the outer ear, where the arm is attached for further stability. In another embodiment, the arm extends outside the access hole, where it is mounted subcutaneously to the mastoid bone with a mechanical fastener. The support provides positional adjustability, stability, and is invisible externally.
    Type: Grant
    Filed: August 7, 1996
    Date of Patent: November 17, 1998
    Assignee: St. Croix Medical, Inc.
    Inventors: Donald J. Bushek, Kai Kroll
  • Patent number: 5836555
    Abstract: An improved industrial chair having a mechanism for adjusting the position of a support column in relation to a fixed platform, such as a chair base portion. The chair comprises a support column having an exterior surface with a plurality of engaging surfaces arranged along the length of the column for selectively engaging portions of a coupling. The coupling is shaped for selectively engaging the support column and positioning the support column relative to the fixed platform. The coupling has an inner surface shaped for contacting the support column engaging surfaces in a substantially matched shape friction fit, and the coupling further has an adjustable circumference structure for permitting selection between locking engagement and relative movement between the support column and the coupling. The chair further has structure suitable for operably retaining the coupling in fixed relation to the support platform.
    Type: Grant
    Filed: June 7, 1996
    Date of Patent: November 17, 1998
    Assignee: Safco Products Company
    Inventors: Thomas Lee Ellsworth, Alwin J. Stahel, Peter Robert Fervoy
  • Patent number: 5836972
    Abstract: Apparatus and method for parallel charging of mixed capacitors, including a source for generating a train of high frequency pulses coupled through a pulse transformer, a high speed diode connected to the pulse transformer, a filter capacitor connected to the high speed diode and acting as a low-pass filter for the train of pulses, and a plurality of solid state switches for selectively coupling and decoupling the voltage across the filter capacitor to one of a plurality of capacitor banks which make up the biphasic high voltage defibrillation pulse supply.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: November 17, 1998
    Assignee: SurVivaLink Corp.
    Inventors: Gary B. Stendahl, James E. Brewer
  • Patent number: 5833199
    Abstract: A lightweight, durable music. The stand includes a base, telescoping upright support assembly, and rack, all formed from a durable, lightweight synthetic resin. The rack includes a matrix of support ribs that provide the rack with exceptional durability in a lightweight structure. The rack includes a bracket receiving structure and a recess for receiving batons, writing instruments and the like in noninterfering relationship with the documents held by the rack. The base includes a plurality of central weights to lower the center of gravity of the stand, such that the stand is provided with excellent stability from a compact footprint.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: November 10, 1998
    Assignee: Wenger Corporation
    Inventors: Gary M. Benting, Eric J. Mueller, David R. Boeddeker, Cindy Weber
  • Patent number: 5830209
    Abstract: Laser catheters according to the invention include multiple optical fibers for delivery of laser energy to a pre-determined treatment site in the therapeutic treatment of cardiac tissue. A fixation device fixes the distal end of the catheter to the treatment site. Temperature sensing devices disposed on the fixation device provide a temperature depth profile of the tissue treatment site, which can be used to control the treatment. Multi-piece, single-piece and porous tip catheters are disclosed.
    Type: Grant
    Filed: September 18, 1995
    Date of Patent: November 3, 1998
    Assignee: Angeion Corporation
    Inventors: Steven D. Savage, Gregory G. Brucker
  • Patent number: 5830839
    Abstract: A detergent composition is described which is a solid homogeneous, evenly dispersed composition containing anionic and nonionic surfactants, soil suspending agents, chelating or sequestering agents, and alkaline builders. The detergent compositions will contain either active enzymes, an oxygen releasing bleaching agent or both. The active enzymes can be protease, amylase or lipase enzymes. Said composition can be used for laundry washing or hard surface cleaning. Manufacturing procedures and methods of use are described.
    Type: Grant
    Filed: May 29, 1996
    Date of Patent: November 3, 1998
    Assignee: Sunburst Chemicals, Inc.
    Inventor: William H. Scepanski
  • Patent number: 5827326
    Abstract: A capacitor-discharge implantable cardioverter defibrillator (ICD) has a relatively smaller energy storage capacity of less than about 1.0 Amp-hours. The smaller energy storage capacity of the ICD is achieved by selecting and arranging the internal components of the ICD to deliver a maximum defibrillation countershock optimized in terms of a minimum physiologically effective current (I.sub.pe) rather than a minimum defibrillation threshold energy (DFT). As a result of the optimization in terms of a minimum effective current I.sub.pe, there is a significant decrease in the maximum electrical charge energy (E.sub.c) that must be stored by the capacitor of the ICD to less than about 30 Joules, even though a higher safety margin is provided for by the device. Due to this decrease in the maximum E.sub.
    Type: Grant
    Filed: March 29, 1995
    Date of Patent: October 27, 1998
    Assignee: Angeion Corporation
    Inventors: Mark W. Kroll, Theodore P. Adams, Kenneth M. Anderson, Charles U. Smith
  • Patent number: 5828153
    Abstract: A rotor for a switched reluctance or synchronous reluctance machine includes a central member from each end of which extends a rotor pole. The rotor is made up of continuous laminations which each define a plane parallel to the axis of rotation of the rotor. A reluctance machine is also disclosed in which the rotor is used. The rotor has radially inner pole faces which cooperate with the pole faces of an inner stator.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: October 27, 1998
    Assignee: Switched Reluctance Drives Limited
    Inventor: Michael Leo McClelland
  • Patent number: 5827267
    Abstract: Cooled optical connector for alignment and coupling of bundled fibers of an optic cable. Coolant in a liquid or gaseous form is passed through a chamber in which a bundled fiber optic cable and nut portion of a standard optical connector is contained. Coolant in either form moves through the cooled optical connector absorbing thermal energy and cooling the interstitial and exposed fibers and areas and the standard optical connector itself.
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: October 27, 1998
    Assignee: Angeion Corporation
    Inventors: Steven D. Savage, Gregory G. Brucker
  • Patent number: 5823207
    Abstract: The invention is an improved dental floss holder that provides a convenient frame for the flossing of teeth. This dental floss holder allows a user to advance new floss into place ready for use without contact with the floss for improved hygienics and aesthetics. A novel advancing mechanism allows the user to simply advance the floss while holding the handle and moving a knob with a finger. The fresh floss is dispensed from a spool in the handle and the used floss is collected on a separate spool. Both spools are locked during flossing, so the force from flossing does not move the spools. A brake on the dispensing spool ensures that freshly dispensed floss is at the proper tension for use. Alternatively, friction is applied along the path of the floss to supply tension to the floss as it is being dispensed. Broken floss can be easily reattached to the collecting spool. In the preferred embodiment, an empty cartridge containing the dispensing spool can be used to supply an empty collecting spool.
    Type: Grant
    Filed: February 8, 1996
    Date of Patent: October 20, 1998
    Inventor: Rich Bushman
  • Patent number: 5821527
    Abstract: A method and apparatus for nearly instantaneous and wide dynamic range exposure control in light-based measurement instruments. The excess charge drained from a CCD array by anti-blooming circuitry is effectively monitored and distinguished from leakage current. Detection of the drained charge generates a signal to deactivate the light source exposing the CCD array. The exposure control device includes a unique circuit for detecting the operating state of an anti-blooming circuit associated with a CCD array, and a unique laser light driver that ramps up the light intensity of the laser light source in an approximately exponential manner.
    Type: Grant
    Filed: May 16, 1997
    Date of Patent: October 13, 1998
    Assignee: CyberOptics Corporation
    Inventors: Eric P. Rudd, Timothy A. Skunes
  • Patent number: 5821648
    Abstract: An optical position transducer circuit for an electrical machine, for example a switched reluctance machine, comprises an optical transmitter, an optical sensor and an encoder disc in the path between the transmitter and the sensor. The disc is formed with apertures and light-blocking areas in between in accordance with a digital position code. The optical position transducer is energized by an enabling circuit. When the machine is not in use but in a standby mode, the enabling circuit is responsive to a signal from a controller to disable the transducer and to enable the transducer when an input demand signal is received from the controller. Selective enablement of the transducer considerably extends its lifetime and reduces current consumption in the standby mode.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: October 13, 1998
    Assignee: Switched Reluctance Drives Limited
    Inventor: Damian Paul Allinson
  • Patent number: 5817151
    Abstract: A circuit detectable arrangement of electrodes and a package thereof are provided so that the presence of a fresh package of electrodes can be detected by a device and can be distinguished from electrodes that have been used or tampered with. A first electrode is disposed on an electrically non-conductive liner, a second electrode is disposed on an electrically non-conductive liner, and an electrical connector is provided between the first and second electrodes for electrically completing a circuit connecting the lead wire of the first electrode to the lead wire of the second electrode. An electrode package is also provided including the first and second electrodes therein. Within the package, the first and second electrodes are provided adjacent to one another with their backing layers generally parallel to one another and with a loop formed in the electrical connector.
    Type: Grant
    Filed: June 4, 1996
    Date of Patent: October 6, 1998
    Assignee: SurVivaLink Corporation
    Inventors: Kenneth F. Olson, John F. Stolte, Nora J. Utke, Gary B. Stendahl
  • Patent number: 5810557
    Abstract: An inline fan wheel is disposed within a conduit for accelerating a flow in the conduit. The fan wheel has a backplate assembly. The backplate assembly has a backplate, presenting a substantially circular outer margin, and has a centrally disposed hub that is operably coupled to the backplate. The hub has a central bore defined therein. The bore is for sliding engagement with the axial shaft. A plurality of fan blades are radially equiangularly disposed with respect to the hub and are fixedly coupled to the backplate of the backplate assembly. Each of the plurality of fan blades has a generally rectangular planform and presents a leading edge, an opposed trailing edge and first and second side margins extending between the leading edge and the opposed trailing edge, the leading edge of each of the plurality of fan blades defining an acute included angle with the longitudinal axis of the conduit. A shroud defines a flow inlet that is operably coupled to and supported by the plurality of fan blades.
    Type: Grant
    Filed: January 3, 1997
    Date of Patent: September 22, 1998
    Assignee: The Penn Ventilation Companies, Inc.
    Inventors: Ajayi F. Akinkuotu, Ralph Mallwitz
  • Patent number: 5810586
    Abstract: This invention consists of a method and apparatus for making patterns which establish the specific vertical dimensions and positions for patterns for the making of dentures which will provide a natural occlusion upon replacement of natural teeth.
    Type: Grant
    Filed: April 3, 1996
    Date of Patent: September 22, 1998
    Inventor: Harold K. Fjelstad
  • Patent number: 5797969
    Abstract: An automated external defibrillator which automatically performs self-tests on a daily and weekly basis. Tested functions include the presence and interconnection of defibrillator electrodes, battery charge state and the operability of the high voltage circuit. Visual and audible indicators are actuated to alert an operator if faults are identified. A record of each self-test is stored in memory, and can be subsequently retrieved through a communications port.
    Type: Grant
    Filed: January 9, 1997
    Date of Patent: August 25, 1998
    Assignee: SurVivaLink Corporation
    Inventors: Kenneth F. Olson, Byron L. Gilman, Katherine H. Anderson
  • Patent number: 5798907
    Abstract: A wearable computing device includes at least one computing-device component module and flexible circuitry operably connected to the module. The module includes a top module portion, a bottom module portion, and at least one protrusion for holding the top module portion in substantially fixed relationship with the bottom module portion. The protrusion passes into and/or through the flexible circuitry. A plurality of such modules are also contemplated.
    Type: Grant
    Filed: December 2, 1996
    Date of Patent: August 25, 1998
    Assignee: ViA, Inc.
    Inventor: Craig M. Janik
  • Patent number: 5793179
    Abstract: A method of and apparatus for monitoring rotor position in a reluctance machine includes determining the rate of change of current at a particular point at which current in the winding is arranged to freewheel. Preferably the point coincides with alignment of a rotor and a stator pole such that the rate of change of current is predicted to be zero. The magnitude and polarity of any variation from the predicted rate of change indicates a rotor position removed from the actual rotor position and whether it is in advance of, or retreated from, the predicted position.
    Type: Grant
    Filed: December 19, 1996
    Date of Patent: August 11, 1998
    Assignee: Switched Reluctance Drives Limited
    Inventor: Stephen James Watkins
  • Patent number: 5793492
    Abstract: The present invention is a method and measurement apparatus for measuring the profile of a railway wheel while the railway wheel is in rolling motion on a rail. The railway wheel has a gage side and a field side and a circumferentially defined running surface and flange. The measurement apparatus comprises a first sensor means that is disposed on the field side of the railway wheel and which is disposed at an included angle with respect to the rail that is less than orthogonal senses the profile of the running surface and flange of the railway wheel at a point on the circumference. A second sensor means is disposed on the gage side of the railway wheel and senses selected wheel parameters. A controller is operably communicatively coupled to the first and second sensor means.
    Type: Grant
    Filed: January 24, 1997
    Date of Patent: August 11, 1998
    Assignee: Loram Maintenance of Way, Inc.
    Inventor: Hassan Vanaki
  • Patent number: 5792190
    Abstract: A portable automated external defibrillator (AED) configured for use with a packaged pair of defibrillator electrodes of the type electrically coupled to one another within the package and having lead wires extending from the package and an electrical connector on the ends of the lead wires. The AED includes a case with an electrode compartment configured to hold the packaged electrodes, and an openable lid for enclosing the compartment. Electrode terminals configured for electrical interconnection to the electrical connector of the electrodes, a speaker and an LED display are positioned within the electrode compartment. An operator-actuated rescue switch and a rescue LED display are positioned on the outside of the case. A high voltage circuit generates defibrillation pulses and applies the pulses to the electrode terminals. The operation of the AED is controlled by a digital control system. Rescue mode operation of the AED is initiated when the lid is opened.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: August 11, 1998
    Assignee: SurVivaLink Corporation
    Inventors: Kenneth F. Olson, Byron L. Gilman, Katherine H. Anderson, Karl J. F. Kroll