Patents by Inventor Douglas Grollmes

Douglas Grollmes 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).

  • In-line tandem axle assembly
    Patent number: 11596092
    Abstract: In one embodiment, an in-line tandem axle assembly comprising: a tandem wheel arm (46); a pair of wheel connecting assemblies (44A, 44B), each comprising a hub (60A, 60B) and a spindle (58A, 58B); a pair of mounts (50A, 50B) coupled respectively to the pair of wheel connecting assemblies; a pair of wheels (52A, 52B) coupled respectively to the pair of wheel connecting assemblies, the pair of wheels separated by the tandem wheel arm and in a same fore-and-aft position; and plural pairs of parallel links (48A, 48B) of equal length pivotably mounted to the pair of mounts and pivotably mounted to the tandem wheel arm.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: March 7, 2023
    Assignee: AGCO Corporation
    Inventors: Benjamin Anson Fanshier, Ross Duerksen, Douglas Grollmes
  • IN-LINE TANDEM AXLE ASSEMBLY
    Publication number: 20200008339
    Abstract: In one embodiment, an in-line tandem axle assembly comprising: a tandem wheel arm (46); a pair of wheel connecting assemblies (44A, 44B), each comprising a hub (60A, 60B) and a spindle (58A, 58B); a pair of mounts (50A, 50B) coupled respectively to the pair of wheel connecting assemblies; a pair of wheels (52A, 52B) coupled respectively to the pair of wheel connecting assemblies, the pair of wheels separated by the tandem wheel arm and in a same fore-and-aft position; and plural pairs of parallel links (48A, 48B) of equal length pivotably mounted to the pair of mounts and pivotably mounted to the tandem wheel arm.
    Type: Application
    Filed: October 25, 2017
    Publication date: January 9, 2020
    Inventors: Benjamin Anson Fanshier, Ross Duerksen, Douglas Grollmes