Patents by Inventor Mark F. Spreitzer

Mark F. Spreitzer 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).

  • Seal with guide member
    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
  • SEAL WITH GUIDE MEMBER
    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
  • Unitized tone ring assembly
    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
  • Unitized tone ring assembly
    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
  • UNITIZED TONE RING ASSEMBLY
    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
  • Unitized tone ring assembly
    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