Patents by Inventor Richard D. Pearson
Richard D. Pearson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7235980Abstract: A cable detection apparatus is disclosed having a filter, the filter transmitting components of a signal detected substantially at certain harmonics of a first frequency. The filter may also attenuate the signal at certain even harmonics thereof. A method of detecting and/or locating cables in the same manner is also disclosed.Type: GrantFiled: March 21, 2006Date of Patent: June 26, 2007Assignee: Radiodetection LimitedInventors: Richard D. Pearson, James Ian King
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Patent number: 6977508Abstract: A cable detection apparatus is disclosed having a filter, the filter transmitting components of a signal detected substantially at certain harmonics of a first frequency. The filter may also attenuate the signal at certain even harmonics thereof. A method of detecting and/or locating cables in the same manner is also disclosed.Type: GrantFiled: March 31, 2003Date of Patent: December 20, 2005Assignee: Radiodetection LimitedInventors: Richard D. Pearson, James Ian King
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Publication number: 20040189322Abstract: A cable detection apparatus is disclosed having a filter, the filter transmitting components of a signal detected substantially at certain harmonics of a first frequency. The filter may also attenuate the signal at certain even harmonics thereof. A method of detecting and/or locating cables in the same manner is also disclosed.Type: ApplicationFiled: March 31, 2003Publication date: September 30, 2004Inventors: Richard D. Pearson, James Ian King
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Patent number: 6728662Abstract: A remotely configurable locator system includes a detection device to locate concealed underground conductors. The detection device is configured to connect to a communications network via a graphical user interface. Also included is a database management tool configured to connect to the communications network and communicate with the detection device via the communications network. A database is included and is adapted to store data related to the detection device wherein the data is configured to be accessed by the database management tool. Finally, the graphical user interface is configured to permit a user to remotely perform one of updating, analyzing, and diagnosing the detection device based upon the accessed stored data.Type: GrantFiled: February 15, 2002Date of Patent: April 27, 2004Assignee: Radiodetection LimitedInventors: Nicholas J. Frost, Jason J. Hanlon, Andrew B. Lewis, Stephen F. Ridley, Michael J. Morgan, Marcus Baker, Gary P. Hiscox, Richard D. Pearson
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Publication number: 20030158708Abstract: A remotely configurable locator system includes a detection device to locate concealed underground conductors. The detection device is configured to connect to a communications network via a graphical user interface. Also included is a database management tool configured to connect to the communications network and communicate with the detection device via the communications network. A database is included and is adapted to store data related to the detection device wherein the data is configured to be accessed by the database management tool. Finally, the graphical user interface is configured to permit a user to remotely perform one of updating, analyzing, and diagnosing the detection device based upon the accessed stored data.Type: ApplicationFiled: February 15, 2002Publication date: August 21, 2003Applicant: Radiodetection LimitedInventors: Nicholas J. Frost, Jason J. Hanlon, Andrew B. Lewis, Stephen E. Ridley, Michael J. Morgan, Marcus Baker, Gary P. Hiscox, Richard D. Pearson
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Patent number: 4950249Abstract: A hypodermic needle apparatus has a safety cap which is axially split into two halves. The two halves are pivotally connected to a needle hub for movement outwardly in opposite directions by sliding ring which moves over a portion of the needle hub. A method of unsheathing and resheathing a needle is also disclosed.Type: GrantFiled: June 9, 1989Date of Patent: August 21, 1990Assignee: University of Virginia Alumni Patents FoundationInventors: Janine C. Jagger, Richard D. Pearson
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Patent number: 4932944Abstract: A connector has one end for receiving a standard auxiliary line adaptor hub and an opposite end receivable over an intravenous line port in a male-female interference fit. A needle is provided in the interior of the connector and punctures a sealing membrane provided over the line port. After the needle has been properly positioned in the line port, an external ring is slid axially over the male-female connection to tighten the interference fit.For a heparin flush, a cylinder has two chambers, one for holding heparin and another for holding saline. The two chambers are separated by a membrane. A rubber stopper is provided at one end of the cylinder and is provided with a screw connector for receiving a plunger. The opposite end is provided with a needle having inner and outer points, the needle being recessed into an end portion of the cylinder.The outer end of the needle is provided with a sheath which is removed prior to sliding an intravenous line port into the cylinder.Type: GrantFiled: March 9, 1988Date of Patent: June 12, 1990Assignee: The University of Virginia Alumni Patents FoundationInventors: Janine C. Jagger, Richard D. Pearson, Patrice G. Guyenet
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Patent number: 4781692Abstract: A flexible plastic catheter extends from a distal end of a rigid plastic housing. An elastomeric seal at the distal end of the housing tightly fits within the housing and grips in its bore a stylet. The stylet has a sharp distal end and an enlarged proximal end which receives a distal end of a plastic tube within the housing. The stylet is slideable within the elastic seal. In an extended position, the stylet distal end extends beyond a distal end of the catheter and the proximal end abuts the elastomeric seal. In a retracted position, the elastomeric seal grips the catheter near its distal end and the proximal end abuts a constriction in the proximal end of the housing. In that retracted position, the tubing, the stylet and the catheter form a fluid flow path.Type: GrantFiled: March 27, 1987Date of Patent: November 1, 1988Assignee: The University of Virginia Alumni Patents FoundationInventors: Janine C. Jagger, Richard D. Pearson, Patrice G. Guyenet
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Patent number: 4676783Abstract: An intravenous needle with a sharpened distal end has a proximal end fixed within a first enlarged end of an inner tube. The enlarged end of the inner tube is held tightly within a first end of an outer tube by friction. The needle passes through a constricted opening in the first end of the outer tube. The second end of the inner tube passes through a constricted opening in the second end of the outer tube. The needle is used by gripping soft plastic wings on the outer tube and removing a needle cover from a nipple on the first end of the outer tube. The needle is then inserted in the desired location and the outer tube and a protruding end of the inner tube are taped in place. Fluids are permitted to flow through the inner tube and needle. When use is complete, the needle is removed from the vein, the protruding end of the inner tube is pulled outward, pulling the first end of the inner tube and the needle into the outer tube.Type: GrantFiled: September 3, 1985Date of Patent: June 30, 1987Assignee: The University of Virginia Alumni Patents FoundationInventors: Janine C. Jagger, Richard D. Pearson, Patrice G. Guyenet
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Patent number: 4592744Abstract: A self-resheathing safety needle has a case with a small closed end and a large open end and a needle assembly within the case with the needle projecting through the small closed end. A hub is connected to the needle assembly inside the case and a connector on the hub cooperates with a receiver in the small end to hold the needle assembly in the case. A flange on the hub cooperates with an inward projection in the case spaced from the small end to prevent movement of the needle out of the case when the needle is withdrawn from the opening in the small end. The nozzle of a syringe pushed into the hub withdraws the needle when the syringe is withdrawn. A rubber stopper on a vacuum tube withdraws the needle after the rubber stopper turns the flange to release the connector from the receiver.Type: GrantFiled: August 14, 1985Date of Patent: June 3, 1986Assignee: The University of Virginia Alumni Patents FoundationInventors: Janine C. Jagger, Richard D. Pearson, Patrice G. Guyenet, Jessica J. Brand
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Patent number: 4407800Abstract: A method of treating or protecting against parasitic diseases caused by members of the protozoan family Trypanosomatidae comprising administering to a mammal a phenothiazine drug. This represents a new use of the phenothiazine compounds.Type: GrantFiled: November 2, 1981Date of Patent: October 4, 1983Assignee: University of Virginia Alumni Patents FoundationInventors: Richard D. Pearson, Erik L. Hewlett