Patents by Inventor Joel T. Gangelhoff

Joel T. Gangelhoff 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: 8246492
    Abstract: A baseball/softball batting tee has a base, and one or more support post and ball holding assemblies mounted in a substantially vertical orientation on the base. A primary support post and ball holding assembly has an adjustable height provided by an upper tube that is telescopically received within a lower tube and a ball supporting rod similarly telescopically received within the upper tube. Wiper seals and bushings are mounted in the upper ends of both tubes for sealing engagement with the respective telescopically received components, providing a friction fit sufficient to “lock” the relative positions of the tubes and rod to set the tee at a desired height while still allowing the tubes and the rod to be easily telescoped together. A secondary support post and ball holding assembly is also provided that can be readily interchanged with the primary.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: August 21, 2012
    Inventor: Joel T. Gangelhoff
  • Publication number: 20110218058
    Abstract: A baseball/softball batting tee has a base, and one or more support post and ball holding assemblies mounted in a substantially vertical orientation on the base. A primary support post and ball holding assembly has an adjustable height provided by an upper tube that is telescopically received within a lower tube and a ball supporting rod similarly telescopically received within the upper tube. Wiper seals and bushings are mounted in the upper ends of both tubes for sealing engagement with the respective telescopically received components, providing a friction fit sufficient to “lock” the relative positions of the tubes and rod to set the tee at a desired height while still allowing the tubes and the rod to be easily telescoped together. A secondary support post and ball holding assembly is also provided that can be readily interchanged with the primary tee.
    Type: Application
    Filed: March 4, 2010
    Publication date: September 8, 2011
    Inventor: Joel T. Gangelhoff
  • Patent number: 5440953
    Abstract: A knife sharpening device includes a vertically-oriented base having a vertically-oriented slot. Mounted on the base, on one side of the slot are two crossed sharpening members of a rod-like configuration. A lower end of each of the crossed sharpening members is anchored in a horizontally-extending pivot pin with a terminal end of each of the sharpening members extending beyond the pivot pins and engaging a horizontally-extending stop pin. The pivot pins are rotatably mounted in the base and extend through the base. A pivot wheel is mounted concentrically on a free end of the pivot pins on an opposite side of the base from the sharpening members. Two radially-extending set screws extend through the pivot wheels and engage a flat surface of the pivot pin to hold the pivot wheels on the pivot pins. Extending between the two set screws, threadingly mounted in the two pivot wheels, is a tensioning spring.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: August 15, 1995
    Assignee: Tru Hone Corporation
    Inventors: Fred R. Gangelhoff, James H. Gangelhoff, Joel T. Gangelhoff