Patents by Inventor Randall R. Diefenderfer

Randall R. Diefenderfer 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: 8512614
    Abstract: A molding system including a component formed in a generally closed loop shape and having a plurality of radially extending teeth. The component includes a plurality of discrete segments coupled together.
    Type: Grant
    Filed: June 20, 2011
    Date of Patent: August 20, 2013
    Assignee: Dayco IP Holdings, LLC
    Inventors: Randall R. Diefenderfer, Randy C. Foster, Enayat O. Karimian
  • Publication number: 20130146745
    Abstract: A mandrel for a molding system includes a support structure formed in a generally closed loop shape. The support structure is formed of a plurality of discrete segments coupled together. The number of discrete segments is increasable or reducible to change the overall geometry of the closed loop shape. The mandrel may be part of a molding system that includes a mandrel surface that closely fits about the outer surface of the mandrel body. The mandrel surface is formed of a plurality of discrete toothed segments that form a generally closed loop shape.
    Type: Application
    Filed: December 4, 2012
    Publication date: June 13, 2013
    Inventors: Randy C. Foster, Randall R. Diefenderfer, Michael M. Kamsickas
  • Publication number: 20120319324
    Abstract: A molding system including a component formed in a generally closed loop shape and having a plurality of radially extending teeth. The component includes a plurality of discrete segments coupled together.
    Type: Application
    Filed: June 20, 2011
    Publication date: December 20, 2012
    Applicant: DAYCO PRODUCTS, LLC
    Inventors: Randall R. Diefenderfer, Randy C. Foster, Enayat O. Karimian
  • Patent number: 8250770
    Abstract: A pulley alignment apparatus including an elongated body having a mounting surface, two elongated legs extending outward from the mounting surface, each of the legs terminating at a tip, a laser supported by the body, wherein the laser is configured to project a planar beam, a power supply for supplying electrical power to the laser, a normally-open switch configured to detect contact between the body and a pulley, wherein the switch electrically couples the laser with the power supply when the contact is detected, and a magnet supported by the body proximate the mounting surface.
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: August 28, 2012
    Assignee: Dayco Products, LLC
    Inventor: Randall R. Diefenderfer
  • Publication number: 20110094116
    Abstract: A pulley alignment apparatus including an elongated body having a mounting surface, two elongated legs extending outward from the mounting surface, each of the legs terminating at a tip, a laser supported by the body, wherein the laser is configured to project a planar beam, a power supply for supplying electrical power to the laser, a normally-open switch configured to detect contact between the body and a pulley, wherein the switch electrically couples the laser with the power supply when the contact is detected, and a magnet supported by the body proximate the mounting surface.
    Type: Application
    Filed: October 22, 2009
    Publication date: April 28, 2011
    Inventor: Randall R. Diefenderfer
  • Patent number: 7497794
    Abstract: A first belt tensioner includes an arm, spring case, coil spring, and arm plate. The arm is adapted to support an idler pulley and has a hook portion. The spring case is disposed in the arm and has a first spring seat. The spring is disposed in the spring case. The arm plate has a second spring seat. The spring is longitudinally compressed between the arm plate and the spring case. The spring is in torsion with the end portions of the spring seated against a corresponding spring seat and with the arm plate rotationally positioned under the hook portion. A method for assembling the first belt tensioner includes using the arm plate to longitudinally compress the spring and rotating the arm plate. A second belt tensioner includes an arm, spring case, coil spring, arm plate, and pivot bushing.
    Type: Grant
    Filed: December 13, 2005
    Date of Patent: March 3, 2009
    Assignee: Dayco Products, LLC
    Inventors: Anthony E. Lannutti, Steve E. Scott, Robert C. Joslyn, Robert J. Crist, Terrence R. Quick, Douglas G. Gerring, Randall R. Diefenderfer, Stephen G. Webb
  • Patent number: D629313
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: December 21, 2010
    Assignee: Dayco Products, LLC
    Inventors: Randall R. Diefenderfer, Jay D. Swope, Dennis M. Welvaert
  • Patent number: D675117
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: January 29, 2013
    Assignee: Dayco IP Holdings, LLC
    Inventor: Randall R. Diefenderfer