Patents by Inventor Chad Kieffner

Chad Kieffner 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).

  • Chair with adjustable armrests and backrest
    Publication number: 20050206209
    Abstract: A task chair including a base, a seat supported by the base, and a pair of uprights connected to the base and extending upwardly from the seat. A pair of armrests are attached respectively to the uprights, and are selectively positionable along the uprights in a manner in which the height of the armrests along the uprights is adjustable. A backrest is also selectively positionable along the uprights, and the height of the backrest with respect to the seat may be adjusted by moving the backrest upwardly or downwardly along the uprights. The armrests and backrest each include mount sleeves telescopingly slidable along the uprights, each of the mount sleeves including a user-operable adjustment mechanism which includes a lever having a portion thereof selectively engagable with one of a series of holes along the uprights.
    Type: Application
    Filed: March 16, 2004
    Publication date: September 22, 2005
    Inventors: Derek Schweikarth, Chad Kieffner
  • Chair backrest detail
    Patent number: D570625
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: June 10, 2008
    Assignee: Kimball International, Inc.
    Inventors: Derek Schweikarth, Chad Kieffner, Michael Deimen, Derek Polen, Marilyn Satkamp, Paula Schmidt, Joe Hasenour