Patents by Inventor Michael C. McDonald
Michael C. McDonald 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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Publication number: 20240134254Abstract: A device includes a spatial light modulator (SLM) and a light shield. The SLM has first and second opposing sides and third and fourth opposing sides. The SLM includes an array of pixel elements. The SLM also includes reflective elements along the first side. At least some of the reflective elements have a metal layer. The light shield has a first portion adjacent the reflective elements. A gap between the metal layers and the light shield has a zig-zag shape.Type: ApplicationFiled: April 6, 2023Publication date: April 25, 2024Inventors: WILLIAM C. MCDONALD, BRADLEY HASKETT, MICHAEL DAVIS
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Publication number: 20230041505Abstract: A regulator valve assembly is provided for use in connection with high pressure fluid systems. The regulator valve assembly includes a valve pin having an engagement portion with a tapered surface and a valve seat having a valve pin receiving aperture defining a tapered surface on the valve seat to sealingly mate with the engagement portion of the valve pin. At least one of the valve pin and the valve seat includes an asymmetrical surface feature sized and shaped such that, when the valve pin is displaced away from the seated configuration and fluid flows through an annular space created between the engagement portion of the valve pin and the valve seat, unbalanced hydrodynamic forces arise from an interaction of the fluid with the asymmetrical surface feature. Systems incorporating the regulator valve assembly are also provided.Type: ApplicationFiled: October 18, 2022Publication date: February 9, 2023Inventor: Michael C. McDonald
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Patent number: 11506289Abstract: A regulator valve assembly is provided for use in connection with high pressure fluid systems. The regulator valve assembly includes a valve pin having an engagement portion with a tapered surface and a valve seat having a valve pin receiving aperture defining a tapered surface on the valve seat to sealingly mate with the engagement portion of the valve pin. At least one of the valve pin and the valve seat includes an asymmetrical surface feature sized and shaped such that, when the valve pin is displaced away from the seated configuration and fluid flows through an annular space created between the engagement portion of the valve pin and the valve seat, unbalanced hydrodynamic forces arise from an interaction of the fluid with the asymmetrical surface feature. Systems incorporating the regulator valve assembly are also provided.Type: GrantFiled: February 15, 2017Date of Patent: November 22, 2022Assignee: Flow International CorporationInventor: Michael C. McDonald
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Publication number: 20190040962Abstract: A regulator valve assembly is provided for use in connection with high pressure fluid systems. The regulator valve assembly includes a valve pin having an engagement portion with a tapered surface and a valve seat having a valve pin receiving aperture defining a tapered surface on the valve seat to sealingly mate with the engagement portion of the valve pin. At least one of the valve pin and the valve seat includes an asymmetrical surface feature sized and shaped such that, when the valve pin is displaced away from the seated configuration and fluid flows through an annular space created between the engagement portion of the valve pin and the valve seat, unbalanced hydrodynamic forces arise from an interaction of the fluid with the asymmetrical surface feature. Systems incorporating the regulator valve assembly are also provided.Type: ApplicationFiled: February 15, 2017Publication date: February 7, 2019Inventor: Michael C. McDonald
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Patent number: 8631038Abstract: A basic architecture for managing digital identity information in a network such as the World Wide Web is provided. A user of the architecture can organize his or her information into one or more profiles which reflect the nature of different relationships between the user and other entities, and grant or deny each entity access to a given profile. Various enhancements which may be provided through the architecture are also described, including tools for filtering email, controlling access to user web pages, locating other users and making one's own location known, browsing or mailing anonymously, filling in web forms automatically with information already provided once by hand, logging in automatically, securely logging in to multiple sites with a single password and doing so from any machine on the network, and other enhancements.Type: GrantFiled: September 16, 2004Date of Patent: January 14, 2014Assignee: EMC CorporationInventors: Joseph Andrew Mellmer, Russell T. Young, Arn D. Perkins, John M. Robertson, Jeffrey Neil Sabin, Michael C. McDonald, Douglas Phillips, Robert Michael Sheridan, Nadeem Ahmad Nazeer, DeeAnne Barker Higley, Stephen R. Carter, Douglas G. Earl, Kelly E. Sonderegger, Daniel T. Ferguson, Farrell Lynn Brough
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Patent number: 8392420Abstract: A basic architecture for managing digital identity information in a network such as the World Wide Web is provided. A user of the architecture can organize his or her information into one or more profiles which reflect the nature of different relationships between the user and other entities, and grant or deny each entity access to a given profile. Various enhancements which may be provided through the architecture are also described, including tools for filtering email, controlling access to user web pages, locating other users and making one's own location known, browsing or mailing anonymously, filling in web forms automatically with information already provided once by hand, logging in automatically, securely logging in to multiple sites with a single password and doing so from any machine on the network, and other enhancements.Type: GrantFiled: April 29, 2011Date of Patent: March 5, 2013Assignee: EMC CorporationInventors: Joseph Andrew Mellmer, Russell T. Young, Arn D. Perkins, John M. Robertson, Jeffrey Neil Sabin, Michael C. McDonald, Douglas Phillips, Robert Michael Sheridan, Nadeem Ahmad Nazeer, DeeAnne Barker Higley, Stephen R. Carter, Douglas G. Earl, Kelly E. Sonderegger, Daniel T. Ferguson, Farrell Lynn Brough
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Publication number: 20110208778Abstract: A basic architecture for managing digital identity information in a network such as the World Wide Web is provided. A user of the architecture can organize his or her information into one or more profiles which reflect the nature of different relationships between the user and other entities, and grant or deny each entity access to a given profile. Various enhancements which may be provided through the architecture are also described, including tools for filtering email, controlling access to user web pages, locating other users and making one's own location known, browsing or mailing anonymously, filling in web forms automatically with information already provided once by hand, logging in automatically, securely logging in to multiple sites with a single password and doing so from any machine on the network, and other enhancements.Type: ApplicationFiled: April 29, 2011Publication date: August 25, 2011Applicant: NOVELL, INC.Inventors: Joseph Andrew Mellmer, Russell T. Young, Arn D. Perkins, John M. Robertson, Jeffrey Neil Sabin, Michael C. McDonald, Douglas Phillips, Robert Michael Sheridan, Nadeem Ahmad Nazeer, DeeAnne Barker Higley, Stephen R. Carter, Douglas G. Earl, Kelly E. Sonderegger, Daniel T. Ferguson, Farrell Lynn Brough
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Patent number: 7680819Abstract: A basic architecture for managing digital identity information in a network such as the World Wide Web is provided. A user of the architecture can organize his or her information into one or more profiles which reflect the nature of different relationships between the user and other entities, and grant or deny each entity access to a given profile. Various enhancements which may be provided through the architecture are also described, including tools for filtering email, controlling access to user web pages, locating other users and making one's own location known, browsing or mailing anonymously, filling in web forms automatically with information already provided once by hand, logging in automatically, securely logging in to multiple sites with a single password and doing so from any machine on the network, and other enhancements.Type: GrantFiled: September 27, 2000Date of Patent: March 16, 2010Assignee: Novell, Inc.Inventors: Joseph Andrew Mellmer, Russell T. Young, Arn D. Perkins, John M. Robertson, Jeffrey Neil Sabin, Michael C. McDonald, Douglas Phillips, Robert Michael Sheridan, Nadeem Ahmad Nazeer, DeeAnne Barker Higley, Stephen R. Carter, Douglas G. Earl, Kelly E. Sonderegger, Daniel T. Ferguson, Farrell Lynn Brough
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Patent number: 6488221Abstract: A spring disk with a concentric through bore and a concentric counter bore of specific depth used to hold an orifice against a lapped surface of a nozzle cap in a waterjet assembly. Dimensions are chosen to provide adequate restraint without the need to force the orifice onto the spring disk. When orifice, spring disk and the retaining cap are assembled and the cap is tightened on the inlet nozzle, the spring disk is forced to the cap surface and the orifice becomes securely held and centrally aligned within the assembly.Type: GrantFiled: May 25, 2001Date of Patent: December 3, 2002Assignee: Maxtec, Inc.Inventor: Michael C. McDonald
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Publication number: 20020175228Abstract: A spring disk with a concentric through bore and a concentric counter bore of specific depth in used to hold an orifice against a lapped surface of a nozzle cap in a waterjet assembly. Dimensions are chosen to provide adequate restraint without the need to force the orifice onto the spring disk. When orifice, spring disk and the retaining cap are assembled and the cap is tightened on the inlet nozzle, the spring disk is forced to the cap surface and the orifice becomes securely held and centrally aligned within the assembly.Type: ApplicationFiled: May 25, 2001Publication date: November 28, 2002Inventor: Michael C. McDonald
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Patent number: 5418824Abstract: An apparatus for cleaning inlet mixers while they remain in their operating position within a nuclear reactor. A cleaning tool is inserted by remote control into the inlet mixer via a secondary inlet opening. Following insertion of the cleaning tool, the internal surfaces of the inlet mixer are cleaned with a waterjet created from an ultra-high-pressure source and directed by controlled positioning of a cleaning head having a nozzle which scans the cleaning waterjet across the surface to be cleaned. The cleaning system includes a nozzle cleaning tool, a throat/barrel/flare cleaning tool, pumping systems for supplying ultra-high-pressure equal to at least 20,000 psi and low-pressure water to an installed cleaning tool, a launching system located at the top of the opened reactor vessel for feeding the water conduits (power), control cables, monitoring cables (instrument) and cleaning tool into and out of the inlet mixer, and a computerized process monitoring and control system.Type: GrantFiled: May 19, 1993Date of Patent: May 23, 1995Assignee: General Electric CompanyInventors: David O. Monserud, David H. Bothell, Paul H. Tacheron, Michael C. McDonald, David E. Steele, James E. Charnley, Gunnar V. Vatvedt
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Patent number: 5361804Abstract: A valve assembly for a faucet is operated by an actuation lever(s) normally positioned to be engaged by a container, for example, into which water is to be discharged from the faucet. For normal operation the lever(s) is moved in a self-return range of about 10 to 50 degrees. The lever(s) can also be swung further to a fully-on position so that the faucet can function in the normal manner by its valve system. The lever(s) operate a cam which acts on a cam follower presented by a valve stem. Responsive axial movement of the valve stem in opposition to spring pressure opens a valve.Type: GrantFiled: October 28, 1992Date of Patent: November 8, 1994Inventors: Myron C. Keller, Michael C. McDonald
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Patent number: 5361286Abstract: A method for cleaning inlet mixers while they remain in their operating position within a nuclear reactor. A water-powered cleaning tool is inserted by remote control into the inlet mixer via a secondary inlet opening. Following insertion of the cleaning tool, the internal surfaces of the inlet mixer are cleaned with a waterjet created from an ultra-high-pressure source and directed by controlled positioning of a cleaning head having an nozzle which scans the cleaning waterjet across the surface to be cleaned.Type: GrantFiled: May 19, 1993Date of Patent: November 1, 1994Assignee: General Electric CompanyInventors: David O. Monserud, David H. Bothell, Paul H. Tacheron, Michael C. McDonald, David E. Steele, James E. Charnley, Gunnar V. Vatvedt
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Patent number: 4691790Abstract: A dual conduit drill string used in drilling holes for geothermal, oil and gas wells, and the like, comprises a removable inner conduit to permit the use of salvage or repair equipment within the outer conduit. The outer conduit comprises standard API drill pipe sections which are each slightly modified to receive the removable inner conduit sections. Each inner conduit section is provided with flexible hangers for suspending the weight of the inner conduit from a support ledge formed on the interior surface of the drill pipe. The hangers permit upward removal motion and rotation of the inner conduit with respect to the drill pipe, but prevent downward motion. Individual inner conduit sections are joined together at lockable stab joints in which locking is accomplished by the rotatable engagement of a key and locking socket. Preferably, the inner conduit is manufactured in uniform lengths and mounted in drill pipe sections of non-uniform lengths by means of drill pipe adaptor subs.Type: GrantFiled: March 5, 1985Date of Patent: September 8, 1987Assignee: Flowdril CorporationInventors: James M. Reichman, Michael C. McDonald, T. B. O'Brien
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Patent number: 4011019Abstract: The arrangement comprises an earth raise borer stem which is formed with a tapered surface, near one terminal end thereof, for slidably engaging and forming an interference fit with a similarly tapered collar within the center of a cutterhead. The stem further has, at the lowermost end thereof, according to one embodiment, a bolted-on flange plate which has a series of rectangular cutouts formed therein. The cutouts receive lugs which are also bolted onto a lowermost surface of the cutterhead. The cooperating tapered surfaces of the collar and the stem cooperate to react thrust and torque which is impressed through the stem to the cutterhead and the cutout flange plate impresses rotary torque onto the cutterhead by means of the lugs. The arrangement provides a simple and facile arrangement for replaceably coupling a stem and cutterhead.Type: GrantFiled: January 16, 1976Date of Patent: March 8, 1977Assignee: Ingersoll-Rand CompanyInventors: Michael C. McDonald, Charles R. Dively