Patents by Inventor David Dobbs

David Dobbs 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: 8441694
    Abstract: An image reproduction apparatus includes a scanning unit, a transparent scanning bed optically coupled to the scanning unit, and an adjustable shade associated with the scanning bed, wherein the adjustable shade is configured to be selectively placed across the scanning bed to reduce a portion of the scanning bed.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: May 14, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Michael David Dobbs
  • Patent number: 7959157
    Abstract: An oil seal having the usual lips for retaining oil and a guide member made of a variety of relatively stiff or rigid materials. The guide member is made slightly larger than the smallest diameter of the seal member when the seal rests on the shaft. The seal member can have the guide member on either the air side or the oil side of the seal. The disclosure also relates to a shipping plug, which is inserted into the seal and retains the oil in place during shipping when the seal is installed but a shaft is not installed.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: June 14, 2011
    Assignee: SKF USA Inc.
    Inventors: David Dobbs, Mark F. Spreitzer, Dennis Nelson Denton, Kacy D. Denton, Kevin R. Suva
  • Publication number: 20080143055
    Abstract: An oil seal having the usual lips for retaining oil and a guide member made of a variety of relatively stiff or rigid materials. The guide member is made slightly larger than the smallest diameter of the seal member when the seal rests on the shaft. The seal member can have the guide member on either the air side or the oil side of the seal. The disclosure also relates to a shipping plug, which is inserted into the seal and retains the oil in place during shipping when the seal is installed but a shaft is not installed.
    Type: Application
    Filed: December 13, 2006
    Publication date: June 19, 2008
    Applicant: SKF USA INC.
    Inventors: David Dobbs, Mark F. Spreitzer, Dennis Nelson Denton, Kacy D. Denton, Kevin R. Suva
  • Publication number: 20080060710
    Abstract: A controllable magnetorheological fluid valve for controlling magnetorheological fluid. The controllable fluid valve includes a magnetorheological fluid conduit with a magnetorheological fluid path. The controllable fluid valve includes a north magnetic pole and a south magnetic pole, with the south magnetic pole proximate the north magnetic pole with a magnetic discontinuity spacer between the south magnetic pole and the north magnetic pole wherein the spacer forces nontraversing magnetic flux lines from said north pole out into the magnetorheological fluid path and then back into the south pole.
    Type: Application
    Filed: August 24, 2007
    Publication date: March 13, 2008
    Inventors: J. Carlson, Fernando Goncalves, David Catanzarite, David Dobbs
  • Patent number: 6664780
    Abstract: A tone ring assembly for use on a rotatable machine part. The tone ring is able to generate a varying voltage output when rotated at varying speeds. A fixed position magnetic sensor detects this voltage. The tone ring comprises an axially extending main body portion having a plurality of areas able to generate a voltage upon rotation. A retainer having at least one radial flange prevents axial movement of the tone ring and the tone ring includes ribs and spaces on its inside diameter to permit oil to pass therethrough.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: December 16, 2003
    Assignee: SKF USA Inc.
    Inventors: David Dobbs, Mark F. Spreitzer, Morgan J. Bullard, Wayde Fausett
  • Publication number: 20030085697
    Abstract: A tone ring assembly for use on a rotatable machine part. The tone ring is able to generate a varying voltage output when rotated at varying speeds. A fixed position magnetic sensor detects this voltage. The tone ring comprises an axially extending main body portion having a plurality of areas able to generate a voltage upon rotation. A retainer having at least one radial flange prevents axial movement of the tone ring and the tone ring includes ribs and spaces on its inside diameter to permit oil to pass therethrough.
    Type: Application
    Filed: June 3, 2002
    Publication date: May 8, 2003
    Inventors: David Dobbs, Mark F. Spreitzer, Morgan J. Bullard, Wayde Fausett
  • Publication number: 20030085696
    Abstract: A tone ring assembly for use on a rotatable machine part. The tone ring is able to generate a varying voltage output when rotated at varying speeds. A fixed position magnetic sensor detects this voltage. The tone ring comprises an axially extending main body portion having a plurality of areas able to generate a voltage upon rotation. A retainer having at least one radial flange prevents axial movement of the tone ring and the tone ring includes ribs and spaces on its inside diameter to permit oil to pass therethrough.
    Type: Application
    Filed: November 2, 2001
    Publication date: May 8, 2003
    Inventors: David Dobbs, Mark F. Spreitzer, Morgan J. Bullard
  • Patent number: 6549001
    Abstract: A tone ring assembly for use on a rotatable machine part. The tone ring is able to generate a varying voltage output when rotated at varying speeds. A fixed position magnetic sensor detects this voltage. The tone ring comprises an axially extending main body portion having a plurality of areas able to generate a voltage upon rotation. A retainer having at least one radial flange prevents axial movement of the tone ring and the tone ring includes ribs and spaces on its inside diameter to permit oil to pass therethrough.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: April 15, 2003
    Assignee: SKF USA Inc.
    Inventors: David Dobbs, Mark F. Spreitzer, Morgan J. Bullard
  • Patent number: 5974910
    Abstract: An accumulator piston for an automatic transmission. The piston comprises two components, the first and second being cup elements welded together with their closed ends in abutting relation. The lower cup includes a curled back portion with a radial flange having an axially extending bi-directional oil seal thereon, and spaced apart recesses in the curled back portion to permit oil to flow therein. The upper cup includes a radial flange of reduced diameter compared to the lower cup flange. The flange also has a lip seal thereon. The piston is spring-loaded and moves up and down in a bore and counterbore in response to fluid flow on either side of the piston to absorb shifting shocks.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: November 2, 1999
    Assignee: SKF USA Inc.
    Inventors: Alex Paykin, David Dobbs