Patents by Inventor Michael R. Oldenburg

Michael R. Oldenburg 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: 7658386
    Abstract: The present invention discloses a seal and a method of sealing dynamic shaft applications. The seal comprises an inner portion, an outer portion, a faceplate, and at least one flexible member located between the inner and outer portions. The method comprises providing a dynamic shaft assembly containing a bore for receiving a seal, providing a unitized seal, and placing the unitized seal on the shaft, thus sealing the assembly so that lubricants may not escape, and foreign material may not enter. The unitized seal can provide permanently lubricated sealed bearings in severe service conditions such as rollers and idlers of track-driven vehicles and agricultural equipment.
    Type: Grant
    Filed: September 19, 2005
    Date of Patent: February 9, 2010
    Assignee: Freudenberg-NOK General Partnership
    Inventor: Michael R. Oldenburg
  • Patent number: 7159871
    Abstract: A unitary sleeve lip seal can be used to provide permanently lubricated sealed bearings in severe service conditions such as the track pins of track-driven vehicles and agricultural equipment. The seal has a labyrinthine exclusion path and multiple dust lips contacting the sleeve in addition to the main sealing lip. A garter spring encircling the main sealing lip may enable the seal to operate at moderately elevated pressures. The sleeve has a radial flange at the outermost end. Elastomeric lips extend between the sleeve flange and a faceplate that terminates the outside end of the seal housing. The seal is packed with water-resistant grease and can, when installed in association with grease-packed bearings can create a permanently lubricated bearing/shaft assembly that requires no re-greasing. Resilient coatings both protect the sleeve and case and also improve leak resistance, especially when the seal is retrofitted onto shafts that have been damaged.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: January 9, 2007
    Assignee: Freudenberg-NOK General Partnership
    Inventor: Michael R. Oldenburg
  • Patent number: 7108267
    Abstract: Unitary radial lip seals are useful to provide permanent lubrication to rotary shaft and bearing assemblies. In addition, these seals also function as excluder seals to keep dirt, chemicals, and other contaminants from contacting the lubricated surfaces. However, previous radial lip seals have a tendency to wear or cut a groove into the associated rotary shaft, as the shaft is rotated during normal operation of the machine. The present disclosure describes a radial lip seal having a sleeve, a seal case, a faceplate and flexible member. This improved seal also has a second sleeve operably positioned between the shaft and the faceplate wiper ring that alleviates the tendency of the wiper ring to cut a groove into the shaft during normal operation of the machine.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: September 19, 2006
    Assignee: International Seal Company, Inc.
    Inventor: Michael R. Oldenburg
  • Patent number: 6991234
    Abstract: A unitary sleeve lip seal can be used to provide permanently lubricated sealed bearings in severe service conditions such as the track pins of track-driven vehicles and agricultural equipment. The seal has a labyrinthine exclusion path and multiple dust lips contacting the sleeve in addition to the main sealing lip. A garter spring encircling the main sealing lip may enable the seal to operate at moderately elevated pressures. The sleeve has a radial flange at the outermost end. Elastomeric lips extend between the sleeve flange and a faceplate that terminates the outside end of the seal housing. The seal is packed with water-resistant grease and can, when installed in association with grease-packed bearings can create a permanently lubricated bearing/shaft assembly that requires no re-greasing. Resilient coatings both protect the sleeve and case and also improve leak resistance, especially when the seal is retrofitted onto shafts that have been damaged.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: January 31, 2006
    Assignee: International Seal Company, Inc.
    Inventor: Michael R. Oldenburg
  • Publication number: 20040169335
    Abstract: A unitary sleeve lip seal can be used to provide permanently lubricated sealed bearings in severe service conditions such as the track pins of track-driven vehicles and agricultural equipment. The seal has a labyrinthine exclusion path and multiple dust lips contacting the sleeve in addition to the main sealing lip. A garter spring encircling the main sealing lip may enable the seal to operate at moderately elevated pressures. The sleeve has a radial flange at the outermost end. Elastomeric lips extend between the sleeve flange and a faceplate that terminates the outside end of the seal housing. The seal is packed with water-resistant grease and can, when installed in association with grease-packed bearings can create a permanently lubricated bearing/shaft assembly that requires no re-greasing. Resilient coatings both protect the sleeve and case and also improve leak resistance, especially when the seal is retrofitted onto shafts that have been damaged.
    Type: Application
    Filed: February 18, 2004
    Publication date: September 2, 2004
    Inventor: Michael R. Oldenburg
  • Publication number: 20040164495
    Abstract: A unitary sleeve lip seal can be used to provide permanently lubricated sealed bearings in severe service conditions such as the track pins of track-driven vehicles and agricultural equipment. The seal has a labyrinthine exclusion path and multiple dust lips contacting the sleeve in addition to the main sealing lip. A garter spring encircling the main sealing lip may enable the seal to operate at moderately elevated pressures. The sleeve has a radial flange at the outermost end. Elastomeric lips extend between the sleeve flange and a faceplate that terminates the outside end of the seal housing. The seal is packed with water-resistant grease and can, when installed in association with grease-packed bearings can create a permanently lubricated bearing/shaft assembly that requires no re-greasing. Resilient coatings both protect the sleeve and case and also improve leak resistance, especially when the seal is retrofitted onto shafts that have been damaged.
    Type: Application
    Filed: February 18, 2004
    Publication date: August 26, 2004
    Inventor: Michael R. Oldenburg
  • Publication number: 20040094899
    Abstract: Unitary radial lip seals are useful to provide permanent lubrication to rotary shaft and bearing assemblies. In addition, these seals also function as excluder seals to keep dirt, chemicals, and other contaminants from contacting the lubricated surfaces. However, previous radial lip seals have a tendency to wear or cut a groove into the associated rotary shaft, as the shaft is rotated during normal operation of the machine. The present disclosure describes a radial lip seal having a sleeve, a seal case, a faceplate and flexible member. This improved seal also has a second sleeve operably positioned between the shaft and the faceplate wiper ring that alleviates the tendency of the wiper ring to cut a groove into the shaft during normal operation of the machine.
    Type: Application
    Filed: November 12, 2003
    Publication date: May 20, 2004
    Inventor: Michael R. Oldenburg
  • Patent number: 6726212
    Abstract: A unitary sleeve lip seal can be used to provide permanently lubricated sealed bearings in severe service conditions such as the track pins of track-driven vehicles and agricultural equipment. The seal has a labyrinthine exclusion path and multiple dust lips contacting the sleeve in addition to the main sealing lip. A garter spring encircling the main sealing lip may enable the seal to operate at moderately elevated pressures. The sleeve has a radial flange at the outermost end. Elastomeric lips extend between the sleeve flange and a faceplate that terminates the outside end of the seal housing. The seal is packed with water-resistant grease and can, when installed in association with grease-packed bearings can create a permanently lubricated bearing/shaft assembly that requires no re-greasing. Resilient coatings both protect the sleeve and case and also improve leak resistance, especially when the seal is retrofitted onto shafts that have been damaged.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: April 27, 2004
    Assignee: Transcom, Inc.
    Inventor: Michael R. Oldenburg
  • Patent number: 6692007
    Abstract: Unitary radial lip seals are useful to provide permanent lubrication to rotary shaft and bearing assemblies. In addition, these seals also function as excluder seals to keep dirt, chemicals, and other contaminants from contacting the lubricated surfaces. However, previous radial lip seals have a tendency to wear or cut a groove into the associated rotary shaft, as the shaft is rotated during normal operation of the machine. The present disclosure describes a radial lip seal having a sleeve, a seal case, a faceplate and flexible member. This improved seal also has a second sleeve operably positioned between the shaft and the faceplate wiper ring that alleviates the tendency of the wiper ring to cut a groove into the shaft during normal operation of the machine.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: February 17, 2004
    Assignee: Transcom, Inc.
    Inventor: Michael R. Oldenburg
  • Publication number: 20030080511
    Abstract: Unitary radial lip seals are useful to provide permanent lubrication to rotary shaft and bearing assemblies. In addition, these seals also function as excluder seals to keep dirt, chemicals, and other contaminants from contacting the lubricated surfaces. However, previous radial lip seals have a tendency to wear or cut a groove into the associated rotary shaft, as the shaft is rotated during normal operation of the machine. The present disclosure describes a radial lip seal having a sleeve, a seal case, a faceplate and flexible member. This improved seal also has a second sleeve operably positioned between the shaft and the faceplate wiper ring that alleviates the tendency of the wiper ring to cut a groove into the shaft during normal operation of the machine.
    Type: Application
    Filed: October 31, 2001
    Publication date: May 1, 2003
    Inventor: Michael R. Oldenburg
  • Publication number: 20020175473
    Abstract: The present invention discloses a method of sealing dynamic shaft applications. The method comprises providing a dynamic shaft assembly containing a bore for receiving a seal, providing a unitized seal, and placing the unitized seal on the shaft, thus sealing the assembly so that lubricants may not escape, and foreign material may not enter. The unitized seal can provide permanently lubricated sealed bearings in severe service conditions such as rollers and idlers of track-driven vehicles and agricultural equipment.
    Type: Application
    Filed: July 8, 2002
    Publication date: November 28, 2002
    Inventor: Michael R. Oldenburg
  • Publication number: 20020149154
    Abstract: A unitary sleeve lip seal can be used to provide permanently lubricated sealed bearings in severe service conditions such as the track pins of track-driven vehicles and agricultural equipment. The seal has a labyrinthine exclusion path and multiple dust lips contacting the sleeve in addition to the main sealing lip. A garter spring encircling the main sealing lip may enable the seal to operate at moderately elevated pressures. The sleeve has a radial flange at the outermost end. Elastomeric lips extend between the sleeve flange and a faceplate that terminates the outside end of the seal housing. The seal is packed with water-resistant grease and can, when installed in association with grease-packed bearings can create a permanently lubricated bearing/shaft assembly that requires no re-greasing. Resilient coatings both protect the sleeve and case and also improve leak resistance, especially when the seal is retrofitted onto shafts that have been damaged.
    Type: Application
    Filed: June 17, 2002
    Publication date: October 17, 2002
    Inventor: Michael R. Oldenburg
  • Patent number: 6464228
    Abstract: The present invention discloses a method of sealing dynamic shaft applications. The method comprises providing a dynamic shaft assembly containing a bore for receiving a seal, providing a unitized seal, and placing the unitized seal on the shaft, thus sealing the assembly so that lubricants may not escape, and foreign material may not enter. The unitized seal can provide permanently lubricated sealed bearings in severe service conditions such as rollers and idlers of track-driven vehicles and agricultural equipment.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: October 15, 2002
    Assignee: Transcom, Incorporated
    Inventor: Michael R. Oldenburg
  • Patent number: 6406026
    Abstract: A unitary sleeve lip seal can be used to provide permanently lubricated sealed bearings in severe service conditions such as the track pins of track-driven vehicles and agricultural equipment. The seal has a labyrinthine exclusion path and multiple dust lips contacting the sleeve in addition to the main sealing lip. A garter spring encircling the main sealing lip may enable the seal to operate at moderately elevated pressures. The sleeve has a radial flange at the outermost end. Elastomeric lips extend between the sleeve flange and a faceplate that terminates the outside end of the seal housing. The seal is packed with water-resistant grease and can, when installed in association with grease-packed bearings can create a permanently lubricated bearing/shaft assembly that requires no re-greasing. Resilient coatings both protect the sleeve and case and also improve leak resistance, especially when the seal is retrofitted onto shafts that have been damaged.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: June 18, 2002
    Assignee: Transcom, Inc.
    Inventor: Michael R. Oldenburg
  • Publication number: 20020011710
    Abstract: The present invention discloses a seal and a method of sealing dynamic shaft applications. The seal comprises an inner portion, an outer portion, a faceplate, and at least one flexible member located between the inner and outer portions. The method comprises providing a dynamic shaft assembly containing a bore for receiving a seal, providing a unitized seal, and placing the unitized seal on the shaft, thus sealing the assembly so that lubricants may not escape, and foreign material may not enter. The unitized seal can provide permanently lubricated sealed bearings in severe service conditions such as rollers and idlers of track-driven vehicles and agricultural equipment.
    Type: Application
    Filed: May 14, 2001
    Publication date: January 31, 2002
    Inventor: Michael R. Oldenburg
  • Patent number: 6315296
    Abstract: A unitary sleeve lip seal can be used to provide permanently lubricated sealed bearings in severe service conditions such as the track pins of track-driven vehicles and agricultural equipment. The seal has a labyrinthine exclusion path and multiple dust lips contacting the sleeve in addition to the main sealing lip. A garter spring encircling the main sealing lip may enable the seal to operate at moderately elevated pressures. The sleeve has a radial flange at the outermost end. Elastomeric lips extend between the sleeve flange and a faceplate that terminates the outside end of the seal housing. The seal is packed with water-resistant grease and can, when installed in association with grease-packed bearings can create a permanently lubricated bearing/shaft assembly that requires no re-greasing. Resilient coatings both protect the sleeve and case and also improve leak resistance, especially when the seal is retrofitted onto shafts that have been damaged.
    Type: Grant
    Filed: September 22, 1999
    Date of Patent: November 13, 2001
    Assignee: Transcom, Inc.
    Inventor: Michael R. Oldenburg
  • Patent number: 6186507
    Abstract: A unitary sleeve lip seal can be used to provide permanently lubricated sealed bearings in severe service conditions such as the track pins of track-driven vehicles and agricultural equipment. The seal has a labyrinthine exclusion path and multiple dust lips contacting the sleeve in addition to the main sealing lip. A garter spring encircling the main sealing lip may enable the seal to operate at moderately elevated pressures. The sleeve has a radial flange at the outermost end. Elastomeric lips extend between the sleeve flange and a faceplate that terminates the outside end of the seal housing. The seal is packed with water-resistant grease and can, when installed in association with grease-packed bearings can create a permanently lubricated bearing/shaft assembly that requires no re-greasing. Resilient coatings both protect the sleeve and case and also improve leak resistance, especially when the seal is retrofitted onto shafts that have been damaged.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: February 13, 2001
    Inventor: Michael R. Oldenburg