Patents by Inventor John J. Stallbaumer

John J. Stallbaumer 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: 6758482
    Abstract: A multipurpose cart having a hand truck base with a nose extension, a tub, a handle wherein the handle is adjustably mounted in two positions 90 degrees apart, a shelf, caster wheels and a storage device. The multipurpose cart can be modified into various configurations for a variety of functions.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: July 6, 2004
    Assignee: Harper Trucks, Inc.
    Inventor: John J. Stallbaumer
  • Publication number: 20030062700
    Abstract: A multipurpose cart having a hand truck base with a nose extension, a tub, a handle wherein the handle is adjustably mounted in two positions 90 degrees apart, a shelf, caster wheels and a storage device. The multipurpose cart can be modified into various configurations for a variety of functions.
    Type: Application
    Filed: March 27, 2002
    Publication date: April 3, 2003
    Applicant: Harper Trucks, Inc.
    Inventor: John J. Stallbaumer
  • Patent number: 6481727
    Abstract: A hand truck toe plate formed from light gauge steel sheet having a load supporting horizontal portion and a mounting vertical portion. The horizontal portion and vertical portion are separated by a 90 degree bend and include a plurality of longitudinal ribs. The vertical portion also includes two lateral ears that each have an end defined by a notch and are adapted to be mounted to side frames of the hand truck.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: November 19, 2002
    Assignee: Harper Trucks, Inc.
    Inventor: John J. Stallbaumer
  • Patent number: 6308967
    Abstract: A dual position hand truck includes a central frame having two side rails and a toe plate. Positioned at an upper end of the central frame is a U-shaped handle bar which has a hand gripping portion and two extended legs with castered wheels attached at their respective bottom ends. The handle bar is pivotally attached to the frame by a fixed shaft and a pair of support brackets. The support brackets also allow the extended legs to slide along their length. Attached to the support brackets is a spring biased locking bar which locks the handle bar against rotational movement relative to the frame.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: October 30, 2001
    Assignee: Harper Trucks, Inc.
    Inventors: John J. Stallbaumer, Robert D. Rahn
  • Patent number: 5749588
    Abstract: A two-wheeled hand truck comprising a pair of side frames molded from highstrength plastic formed in an open truss with compression and tensile members. The side frames are held in a rigid parallel relationship to each other by cross rails, handles and a toe plate with integral stiffeners attached to the side frames.
    Type: Grant
    Filed: July 29, 1996
    Date of Patent: May 12, 1998
    Assignee: Harper Trucks, Inc.
    Inventor: John J. Stallbaumer
  • Patent number: D384467
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: September 30, 1997
    Assignee: Harper Trucks, Inc.
    Inventor: John J. Stallbaumer
  • Patent number: D395105
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: June 9, 1998
    Assignee: Harper Trucks, Inc.
    Inventor: John J. Stallbaumer