Patents Represented by Attorney, Agent or Law Firm Gerald W. Spinks
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Patent number: 6471217Abstract: A sealing assembly for attaching pliable tubes to rigid connecting members, for high pressure, low temperature service, which seals by compressing a sealing wafer around the pliable tubes. The pliable tubes pass through holes in the sealing wafer. As the wafer seal is axially compressed, the wafer seal is restrained against radial expansion, thereby exerting an inward radial pressure on the holes through the wafer seal to cause an hermetic seal between the wafer seal and the pliable tubes. A swage bushing can be used, with swage tubes that are swaged onto the pliable tubes by a swage clamp, for the purpose of axially restraining the pliable tubes.Type: GrantFiled: August 18, 2000Date of Patent: October 29, 2002Assignee: CryoGen, Inc.Inventors: John Frederick Hayfield, Eric Lee Ryba
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Patent number: 6471694Abstract: An apparatus and method for automatic operation of a refrigeration system to provide refrigeration power to a catheter for tissue ablation or mapping. The primary refrigeration system can be open loop or closed loop, and a precool loop will typically be closed loop. Equipment and procedures are disclosed for bringing the system to the desired operational state, for controlling the operation by controlling refrigerant flow rate, for performing safety checks, and for achieving safe shutdown.Type: GrantFiled: August 9, 2000Date of Patent: October 29, 2002Assignee: CryoGen, Inc.Inventors: Ravikumar V. Kudaravalli, Hong Li
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Patent number: 6471717Abstract: A selective organ heat transfer device with deep irregularities in a turbulence-inducing exterior surface. The device can have a plurality of elongated, articulated segments, each having a turbulence-inducing exterior surface. A flexible joint connects adjacent elongated, articulated segments. An inner lumen is disposed within the heat transfer segments. The inner lumen is capable of transporting a pressurized working fluid to a distal end of the heat transfer element.Type: GrantFiled: May 12, 2000Date of Patent: October 29, 2002Assignee: Innercool Therapies, Inc.Inventors: John D. Dobak, III, Juan C. Lasheras
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Patent number: 6464716Abstract: An endovascular heat transfer device which can have a smooth exterior surface, or a surface with ridges and grooves. The device can have a plurality of elongated, articulated segments, with each having such a surface. A flexible joint connects adjacent elongated, articulated segments. The flexible joints can be bellows or flexible tubes. An inner lumen is disposed within the heat transfer segments. The inner lumen is capable of transporting a pressurized working fluid to a distal end of the heat transfer element.Type: GrantFiled: June 30, 2000Date of Patent: October 15, 2002Assignee: Innercool Therapies, Inc.Inventors: John D. Dobak, III, Juan C. Lasheras, Randell L. Werneth
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Patent number: 6464694Abstract: A liposuction cannula having a source of aqueous solution, a laser source, and a suction source. Aqueous solution is released into an active area within the cannula, and laser energy is directed onto the aqueous solution within the active area to energize the water molecules. The energized water molecules escape from the active area into the surrounding fatty tissue to break down the fatty tissue and release liquid fatty material, which is removed by aspiration via the cannula.Type: GrantFiled: July 24, 2000Date of Patent: October 15, 2002Assignee: Sonique Surgical Systems, Inc.Inventor: R. Kemp Massengill
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Patent number: 6464434Abstract: A method for applying cutting elements to a tool for cutting or milling a metal item in a well is disclosed, along with the cutting element used in the method. The tool can include one or more blades extending outwardly or downwardly from the tool for cutting a metal item such as the wall of a casing string, or for removing a predetermined length of a casing string in a cutting action. The blade or blades have cutting elements positioned on the leading faces of the blades to engage the casing string or other metal item in the bore hole. Each cutting element is composed of a plurality of effective cutting faces. Each cutting face can have a substantially triangular shape, or a substantially square shape, or some other geometric shape. The cutting elements can be arranged in a random pattern. Each cutting element can be oriented in a random orientation relative to the blade.Type: GrantFiled: January 2, 2001Date of Patent: October 15, 2002Assignee: Baker Hughes IncorporatedInventor: Gerald D. Lynde
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Patent number: 6451012Abstract: A cryosurgical probe incorporating various forms of auxiliary instrumentation mounted on the catheter or conductive tip, such as a temperature sensor, a heater, an ultrasonic transducer, or an optical element of a viewing, illumination, or laser system, and a method for employing such a probe for ablation of uterine tissue.Type: GrantFiled: February 5, 2001Date of Patent: September 17, 2002Assignee: CryoGen, Inc.Inventor: John D. Dobak, III
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Patent number: 6450987Abstract: A wire guided fluid catheter assembly having a collapsible guidewire lumen. Pressurization of a fluid lumen in the catheter assembly collapses the guidewire lumen, thereby increasing the fluid flow capacity of the catheter assembly.Type: GrantFiled: February 1, 2001Date of Patent: September 17, 2002Assignee: Innercool Therapies, Inc.Inventor: Hans W. Kramer
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Patent number: 6439941Abstract: A sea rescue signaling system including a personal flotation device equipped with a GPS receiver, a satellite radio-telephone, a hydrostatic pressure detector, and a controller. When the pressure detector senses a minimum specified submersion of the device for a minimum specified duration, the controller energizes the GPS and the radio-telephone, then dials a rescue service and transmits a distress signal and position data.Type: GrantFiled: April 5, 2001Date of Patent: August 27, 2002Inventors: Richard J. McClure, Esther S. Massengill, R. Kemp Massengill
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Patent number: 6439303Abstract: A tool for removal of magnetic debris from a well bore, having a plurality of magnets retained in a plurality of recesses by a plurality of retainer caps which are threadable into the recesses. The retainer caps can be made of non-magnetic material, and non-magnetic spacers can be used, to isolate the magnets from the tool body and the surroundings. The retainer caps can be positioned entirely within the recesses, to streamline the tool body. The magnets can be removed from the recesses and replaced.Type: GrantFiled: July 10, 2000Date of Patent: August 27, 2002Assignee: Baker Hughes IncorporatedInventors: Atle Johnny Sorhus, Larry Thomas Palmer
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Patent number: 6422328Abstract: A rotating tool for milling or drilling in a well bore, having one or more rotating cutting structures, with each cutting structure rotating about its own axis, and with the cutting structures rotating about the axis of the tool. The rotational axis of the tool is offset from the axis of at least one cutting structure, with the axis of the tool passing through that cutting structure. This ensures that the cutting structure which spans the axis of the tool rotates independently of the tool, to prevent the existence of a zero velocity point on the cutting face of the tool.Type: GrantFiled: October 27, 1999Date of Patent: July 23, 2002Assignee: Baker Hughes IncorporatedInventors: Jimmie Joe Holland, Barry Boswell
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Patent number: 6418335Abstract: A probe instrument using room-temperature sensor(s) that can measure magnetic susceptibilities variations. The instrument includes room temperature magnetic sensors, and detects the sample, that is the tissue response to an applied field coil. The sensors that can be used include magnetoresistive, fluxgate and magnetoinductive sensors. The applied field coil dimensions are chosen so that the applied field is optimized for maximum response from the item of interest while minimizing the effects due to the overlying tissue and at the same time not unduly increasing the sensitivity of the instrument to adjacent organs. To minimize noise introduced in the sensor due to fluctuations in the applied field, the applied field is canceled at the position of the sensor. To overcome variations in the sensor output due to fluctuations in the applied field, change in the ambient temperature and mechanical relaxation of the instrument, the detector assembly is oscillated while the examined patient remains stationary.Type: GrantFiled: December 15, 2000Date of Patent: July 9, 2002Assignees: MedNovus, Inc., Quantum Magnetics, Inc.Inventors: William F. Avrin, Peter V. Czipott, R. Kemp Massengill, Sankaran Kumar
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Patent number: 6408946Abstract: An apparatus for disconnecting a bottom hole assembly from a work string, having an upper tool body, a piston biased away from a slidable collet, locking dogs held in engagement with a lower tool body by the slidable collet, and one or more collet fingers holding the collet in place, relative to the upper body. The piston can be hydraulically displaced against the biasing spring, thereby releasing the collet finger, followed by further displacement of the piston to contact the collet, then displacement of the piston and the collet to release the locking dogs from engagement with the lower tool body. A shear pin in the collet can provide a positive pressure indication of release of the disconnect device.Type: GrantFiled: April 28, 2000Date of Patent: June 25, 2002Assignee: Baker Hughes IncorporatedInventors: Gregory S. Marshall, Daniel R. Hart
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Patent number: 6386706Abstract: A system for testing and quantifying visual field and other visual function information in a head-mounted virtual reality environment, utilizing a directed image formation device for scanning of an image onto the retina of the test subject. A method and an apparatus are also provided for utilizing a central neural network and a central data bank to perform automatic interpretation of the visual function test parameters obtained in a plurality of visual field testing systems, for a plurality of patients, with control and response signals being transmitted via the Internet. The data produced by the testing systems are automatically analyzed and compared with patterns on which the neural network was previously trained, and clinical diagnoses for pathological conditions are thereby suggested to the respective clinician for each patient.Type: GrantFiled: December 20, 1999Date of Patent: May 14, 2002Assignee: Virtual-Eye.COMInventors: Richard J. McClure, R. Kemp Massengill, Dariusz Wroblewski, Johannes Braeuning
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Patent number: 6325818Abstract: A cooling apparatus having an inflatable balloon near a distal end of a multi-lumen catheter, with a plurality of blood flow passageways formed through the interior of the balloon from a proximal face of the inflated balloon to a distal face of the inflated balloon. Chilled saline solution is introduced through a supply lumen of the catheter to inflate the balloon in a feeding artery of the selected organ; this allows blood to flow through the blood flow passageways of the balloon, from one exterior face of the balloon to another exterior face. The saline solution continues to circulate around the blood flow passageways inside the balloon, to cool the blood, eventually exiting the balloon through a return lumen of the catheter.Type: GrantFiled: October 7, 1999Date of Patent: December 4, 2001Assignee: Innercool Therapies, Inc.Inventor: Randell Werneth
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Patent number: 6325145Abstract: A downhole in-line tubular accumulator for the attenuation of pressure pulses generated by operation of a downhole vibratory apparatus in an oil or gas well. An inner tube is positioned within a hollow housing, with the inner tube being attached to the housing at their upper ends. The lower end of the inner tube is unattached within the housing, thereby establishing an annular upper cavity between the inner tube and the housing, and an open lower cavity in the housing below the unattached lower end of the inner tube. The attenuator is run into the well on a work string. Pressure pulses traveling through the fluid column in the work string are attenuated by entrapped air in the annular upper cavity in the housing.Type: GrantFiled: June 15, 2000Date of Patent: December 4, 2001Assignee: Baker Hughes IncorporatedInventor: Roy E. Swanson, Jr.
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Patent number: 6318308Abstract: A diesel engine adapted for operation under retarded fuel ignition timing relative to conventional fuel injection timing includes a piston shaped to increase the compression ratio of an engine cylinder, and specially designed combustion air intake and exhaust gas ports that increase scavenging flow of exhaust gases and allow for manipulation of air intake and exhaust gas valves with a cam shaft. Thus, an engine may be operated under retarded fuel injection timing to decrease emissions of nitrogen oxides without sacrificing engine performance and efficiency.Type: GrantFiled: October 4, 1999Date of Patent: November 20, 2001Assignee: General Electric CompanyInventors: Bertrand Dahung Hsu, Gong Chen
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Patent number: 6290357Abstract: A method and apparatus for testing the visual field of a patient, with a head mounted display, which displays a central fixation icon and a variable peripheral stimulus icon, and which senses the responses of the patient by tracking the gaze of the patient, as the gaze shifts between the central fixation icon and the peripheral stimulus icon.Type: GrantFiled: March 24, 2000Date of Patent: September 18, 2001Assignee: Virtual-Eye.com, Inc.Inventors: R. Kemp Massengill, Richard J. McClure, Johannes Braeuning
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Patent number: 6276452Abstract: An apparatus and method for drawing small milling debris into a combination milling and debris retrieval tool, during the performance of the milling operation. A milling tool has a fluid intake port near its lower end, where debris-laden fluid is drawn into the milling tool and subsequently into a separator section. The separator section has a debris deflection tube and a screen for separating the debris from the fluid. Fluid is drawn into the tool by either a set of eductor nozzles or a downhole motor and pump.Type: GrantFiled: November 5, 1999Date of Patent: August 21, 2001Assignee: Baker Hughes IncorporatedInventors: John Phillip Davis, Terry Edgar Cassel
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Patent number: 6270494Abstract: A sheath for use on a closed loop Joule-Thomson cryosurgical probe, and the combination of the sheath and the closed loop probe. The sheath is slipped over the probe, thereby separating the probe from the environment. The sheath has a grip which fits over the handle of the cryosurgical probe, and an extendible shroud which can be longitudinally extended to cover tubing and which are attached to the handle. The sheath has a hollow multi-lumen catheter shaped and sized to fit snugly over the cannula of the cryosurgical probe. The catheter is not thermally conductive, preventing transfer of heat from the ambient to the gas mixture, and preventing the freezing of tissues at undesired locations along the catheter. A thermally conductive cap or tip is attached to the distal end of the hollow catheter. The thermally conductive cap or tip is biased against the cold tip on the probe by a biasing element in the sheath assembly, to promote heat transfer.Type: GrantFiled: August 25, 1999Date of Patent: August 7, 2001Assignee: CryoGen, Inc.Inventors: Steven Kovalcheck, John D. Dobak, III