Patents by Inventor David W. Swanson

David W. Swanson 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).

  • Patent number: 10792383
    Abstract: A method of disinfecting a medical device comprises three steps. First, a disinfectant is contacted with a process indicator and the medical device. The disinfectant comprises at least one aldehyde. The process indicator contains a synthetic amine-containing compound disposed on a substrate. The synthetic amine-containing compound comprises at least one of primary amino groups or secondary amino groups, and is reactive with the disinfectant to form at least one adduct. The synthetic amine-containing compound and the medical device are in fluid communication through the disinfectant. A predetermined disinfectant exposure criterion exists for contacting the disinfectant with the medical device. Second, the process indicator is spectrally observed and at least one parameter is obtained therefrom that is predictive of the predetermined disinfectant exposure criterion. The third step is determining that the predetermined disinfectant exposure criterion has been achieved.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: October 6, 2020
    Assignee: 3M Innovative Properties Company
    Inventors: Naiyong Jing, Ryan T. Woldt, Wensheng Xia, Kevin D. Landgrebe, Timothy J. Nies, Bryan A. Baker, Semra Colak Atan, Gary W. Jorgensen, Giuseppe M. Bommarito, David P. Swanson, George W. Griesgraber, Ranjani V. Parthasarathy
  • Patent number: 8751193
    Abstract: A positioning device includes a computer including a stored design file, such as a CAD file, for positioning a selected portion of the design on a workpiece. In a first embodiment, a base unit houses an extensible cable including a free end for placement by a user at a design point on the workpiece. A turn carriage freely rotates about a turn axis to follow cable movement. In output mode, the user is directed to move the cable free end toward the portion of the design and a cable tensioning motor adjusts the tension in the cable sufficiently to indicate when cable free end is at a distance to the portion of the design. Other embodiments include: a turn carriage servoed motor for rotating the turn carriage to follow the cable; and a pitch carriage and servoed motor for rotating the pitch carriage for following the cable.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: June 10, 2014
    Assignee: Delta II, I.P.
    Inventors: David W. Swanson, William Robert Swanson
  • Patent number: 8418373
    Abstract: A method preparing for tiling a surface generally includes the steps of: measuring the surface with a cable measuring device to produce a digitized plan of the surface; displaying a plurality of possible tile layout for the surface on a display of a computer containing the produced digitized plan and programmed to display tile layouts for the surface depending on parameters including tile size, grout width, and tile orientation; selecting a tile layout, and placing the selected tile layout on the surface with the device. The method may include using the device for placing cut lines on the tiles.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: April 16, 2013
    Assignee: Delta II, I.P. (Trust)
    Inventors: David W. Swanson, William Robert Swanson
  • Patent number: 8220167
    Abstract: The method uses a cable measurement and cable positioning or laser projection device to measure a structure to produce a digitized design of the structure and to put the design on a panel by laser pointer projection or by cable positioning so that the panel can be marked and cut for fitting on the structure.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: July 17, 2012
    Assignee: Delta II, I.P. (Trust)
    Inventors: David W. Swanson, William Robert Swanson
  • Patent number: 8161660
    Abstract: A measuring device generally comprises a base unit housing an extensible cable; the cable including a free end for placement by a user at a point being measured. The base unit, placed in line of sight of the point, includes: a base; a first carriage rotationally attached to the base about a turn axis; and a second carriage rotationally attached to the first carriage about a pitch axis. Servoed motors rotate the carriages to align them with cable path to the point. The turn angle, the pitch angle and the cable length are measured to determine the point's location. A plurality of points determines a surface. The user uses a programmed PDA with a radio to communicate with the base unit. An alternative embodiment only has a first carriage.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: April 24, 2012
    Assignee: Delta II I.P. Trust
    Inventors: David W. Swanson, William Robert Swanson
  • Publication number: 20110126416
    Abstract: A method preparing for tiling a surface generally includes the steps of: measuring the surface with a cable measuring device to produce a digitized plan of the surface; displaying a plurality of possible tile layout for the surface on a display of a computer containing the produced digitized plan and programmed to display tile layouts for the surface depending on parameters including tile size, grout width, and tile orientation; selecting a tile layout, and placing the selected tile layout on the surface with the device. The method may include using the device for placing cut lines on the tiles.
    Type: Application
    Filed: December 18, 2009
    Publication date: June 2, 2011
    Inventors: David W. Swanson, William Robert Swanson
  • Publication number: 20110131008
    Abstract: A positioning device includes a computer including a stored design file, such as a CAD file, for positioning a selected portion of the design on a workpiece. In a first embodiment, a base unit houses an extensible cable including a free end for placement by a user at a design point on the workpiece. A turn carriage freely rotates about a turn axis to follow cable movement. In output mode, the user is directed to move the cable free end toward the portion of the design and a cable tensioning motor adjusts the tension in the cable sufficiently to indicate when cable free end is at a distance to the portion of the design. Other embodiments include: a turn carriage servoed motor for rotating the turn carriage to follow the cable; and a pitch carriage and servoed motor for rotating the pitch carriage for following the cable.
    Type: Application
    Filed: September 29, 2009
    Publication date: June 2, 2011
    Inventors: David W. Swanson, William Robert Swanson
  • Publication number: 20110119936
    Abstract: The method uses a cable measurement and cable positioning or laser projection device to measure a structure to produce a digitized design of the structure and to put the design on a panel by laser pointer projection or by cable positioning so that the panel can be marked and cut for fitting on the structure.
    Type: Application
    Filed: December 18, 2009
    Publication date: May 26, 2011
    Inventors: David W. Swanson, William Robert Swanson
  • Publication number: 20110078914
    Abstract: A measuring device generally comprises a base unit housing an extensible cable; the cable including a free end for placement by a user at a point being measured. The base unit, placed in line of sight of the point, includes: a base; a first carriage rotationally attached to the base about a turn axis; and a second carriage rotationally attached to the first carriage about a pitch axis. Servoed motors rotate the carriages to align them with cable path to the point. The turn angle, the pitch angle and the cable length are measured to determine the point's location. A plurality of points determines a surface. The user uses a programmed PDA with a radio to communicate with the base unit. An alternative embodiment only has a first carriage.
    Type: Application
    Filed: June 18, 2009
    Publication date: April 7, 2011
    Inventors: David W. Swanson, William Robert Swanson
  • Patent number: 7841246
    Abstract: A device for measuring the length of a cable under tension moved through the device generally comprises a frame, a measuring pulley rotatably mounted on the frame; an anti-slip device for rollingly holding the midsection of the cable in a non-slipping manner against the measuring pulley such that movement of the cable rotates the measuring pulley, and a rotation sensor for sensing the rotation of the measuring pulley and producing a signal indicative of the rotation thereof. The anti-slip device generally comprises one or more loading rollers and a loading assembly including a flexible tension member for applying loading to the loading rollers such that movement of the cable rotates the measuring pulley. A location measuring device incorporating the cable length measuring device determines the direction and distance from the location measuring device to a free end of the cable.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: November 30, 2010
    Assignee: Delta II, I.P.
    Inventors: David W. Swanson, William Robert Swanson
  • Publication number: 20100089175
    Abstract: A device for measuring the length of a cable under tension moved through the device generally comprises a frame, a measuring pulley rotatably mounted on the frame; an anti-slip device for rollingly holding the midsection of the cable in a non-slipping manner against the measuring pulley such that movement of the cable rotates the measuring pulley, and a rotation sensor for sensing the rotation of the measuring pulley and producing a signal indicative of the rotation thereof. The anti-slip device generally comprises one or more loading rollers and a loading assembly including a flexible tension member for applying loading to the loading rollers such that movement of the cable rotates the measuring pulley. A location measuring device incorporating the cable length measuring device determines the direction and distance from the location measuring device to a free end of the cable.
    Type: Application
    Filed: October 10, 2008
    Publication date: April 15, 2010
    Inventors: David W. Swanson, William Robert Swanson
  • Patent number: 7665223
    Abstract: A measuring device generally comprises a base unit housing an extensible cable; the cable including a free end for placement by a user at a point being measured. The base unit, placed in line of sight of the point, includes: a base; a first carriage rotationally attached to the base about a turn axis; and a second carriage rotationally attached to the first carriage about a pitch axis. Servoed motors rotate the carriages to align them with cable path to the point. The turn angle, the pitch angle and the cable length are measured to determine the point's location. A plurality of points determines a surface. The user uses a programmed PDA with a radio to communicate with the base unit.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: February 23, 2010
    Assignee: Delta II, I.P., Trust
    Inventors: David W. Swanson, William Robert Swanson
  • Publication number: 20090313844
    Abstract: A measuring device generally comprises a base unit housing an extensible cable; the cable including a free end for placement by a user at a point being measured. The base unit, placed in line of sight of the point, includes: a base; a first carriage rotationally attached to the base about a turn axis; and a second carriage rotationally attached to the first carriage about a pitch axis. Servoed motors rotate the carriages to align them with cable path to the point. The turn angle, the pitch angle and the cable length are measured to determine the point's location. A plurality of points determines a surface. The user uses a programmed PDA with a radio to communicate with the base unit.
    Type: Application
    Filed: June 20, 2008
    Publication date: December 24, 2009
    Inventors: David W. Swanson, William Robert Swanson
  • Patent number: 6669911
    Abstract: Rigid frame (10) for holding thin, flexible tray top (82) of injection-molded multiwell tray (81) planar. Multiwell tray (81), such as a titre or PCR plate, includes apertures (86) spaced apart in peripheral wall (85). Frame wall (20) of frame (10) includes a plurality of barbs (41) spaced apart on interior surface (40). Apertures (86) and barbs (41) cooperate to retain tray (81) within tray (10).
    Type: Grant
    Filed: January 31, 2001
    Date of Patent: December 30, 2003
    Inventor: David W. Swanson
  • Patent number: 6341853
    Abstract: A closed ink replenishment system for replenishing the supply of ink in negative pressure spring-bag reservoirs in a printer/plotter. A tube runs between each cartridge reservoir and an auxiliary reservoir mounted to the printer/plotter frame to form the closed ink system. As ink is depleted from the spring-bag reservoir during printing operation, the negative pressure in the cartridge increases, drawing ink through the tube from the auxiliary reservoir into the cartridge until the negative pressure decreases to an equilibrium point. As a result, the volume of ink within the spring-bag reservoir remains substantially constant so long as there is ink remaining within the auxiliary reservoir. This maintains the print quality. The auxiliary reservoir is a flat bag mounted on a spring-biased platform, which acts as a height regulating system. As ink is depleted from the auxiliary bag, the height of the platform and bag increases to maintain a constant pressure and elevation head at the spring-bag reservoir.
    Type: Grant
    Filed: April 28, 1998
    Date of Patent: January 29, 2002
    Assignee: Hewlett-Packard Company
    Inventors: Joseph E. Scheffelin, Mark E. Young, Elizabeth Zapata, Kenneth J. Courian, George T. Kaplinsky, David W. Swanson, James E. Clark, Tofigh Khodapanah
  • Patent number: 6206515
    Abstract: An ink-jet cartridge is formed by a rigid outer protective case and an inner ink reservoir having a flexible wall portion and a rigid wall portion which together form a sealed compartment. The flexible wall portion includes two opposing membranes sealed at their periphery to an inner loop-like frame which is integrated with a portion of the outer case. The outer protective case also covers a snout having a shortened length in the media advance direction to allow media positioning rollers closely adjacent to the print zone. The snout includes internal filters in an ink passageway from the reservoir to print nozzles at the end of the snout.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: March 27, 2001
    Assignee: Hewlett-Packard Company
    Inventors: David W. Swanson, George T. Kaplinsky, James G. Salter, W. Wistar Rhoads
  • Patent number: 6053607
    Abstract: An inkjet printhead is mounted on a cartridge which has an outer casing member, an inner collapsible reservoir formed by non-elastic flexible walls, and an internal spring means inside the reservoir for creating negative pressure in the collapsible reservoir during the filling and storage of ink in the collapsible reservoir as well as during the dispensing of ink from the collapsible reservoir to the printhead.
    Type: Grant
    Filed: May 22, 1998
    Date of Patent: April 25, 2000
    Assignee: Hewlett-Packard Company
    Inventors: George Kaplinsky, David W. Swanson, James E. Clark, Tofigh Khodapanah
  • Patent number: 6033610
    Abstract: A thermal ink-jet pen cartridge having a rigid external frame member fabricated of a rigid engineering plastic, and an interior frame structure attached thereto, formed of a softer, more ductile plastic material than the rigid engineering plastic. An ink reservoir is defined by the interior structure and a pair of flexible bag membranes formed of a plastic material impervious to the ink and compatible with the interior member material, allowing the membranes to be joined to the interior member to form a leak-proof joint The interior frame structure is fabricated from a polymer blend composition comprising (A) at least one polymer selected from the group consisting of a polyethylene and a copolymer of ethylene and an alpha-olefin and (B) at least one polymer selected from the group consisting of a polypropylene and a copolymer of propylene and ethylene, wherein (A) is different from (B).
    Type: Grant
    Filed: June 13, 1997
    Date of Patent: March 7, 2000
    Assignee: Hewlett-Packard Company
    Inventors: David W. Swanson, Mindy A. Hamlin, James G. Salter, Deenadayalu Chundury
  • Patent number: 6030075
    Abstract: A method for designing a second ink-jet cartridge characterized by a datum structure, an ink reservoir system and a printhead structure, given a first cartridge design, wherein the printhead structure of the two cartridges are different. The method uses a common datum structure and ink reservoir system for both the first and second cartridges, to save on development and tooling expenses. The cartridges differ in the shapes or configurations of the headland structures, the flexible interconnect circuits, the nozzle plates, the ink channels or the printhead substrates.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: February 29, 2000
    Assignee: Hewlett-Packard Company
    Inventors: David W. Swanson, George T. Kaplinsky, Timothy J. Carlin
  • Patent number: 6010056
    Abstract: A pressure head (10) for contacting a contact area of workpiece (230) through relative movement in the vertical Z-direction includes a frame (20), a horn (100) for contacting the workpiece (230) and a gimbal (40) connected to the frame (20). The gimbal (40) supports the horn (100) such that the horn (100) can rotate about horizontal X and Y rotation axes and can translate in the Z-direction relative to the frame (20). A pivot rod (140) includes a bearing surface (144) bearing against horn (100) such that the horn may rotate about the X-axis and Y-axis and for applying downward pressure to the horn. The shape and orientation of the bearing surface (144) corresponding to the shape and orientation of the contact area of horn (100).
    Type: Grant
    Filed: June 18, 1997
    Date of Patent: January 4, 2000
    Inventor: David W. Swanson