Patents by Inventor Earl L Hagman

Earl L Hagman 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).

  • Publication number: 20030205433
    Abstract: A transport lift (10) has a base (12) and two spaced-apart legs (30, 32) are slidingly mounted on the base for movement toward and away from each other. Wheels (34, 36, 38) support the base and legs for rolling movement. Leg motor drive means (62) operate to drive the two spaced-apart legs toward and away from each other to vary the straddle spacing between the legs. A lift column (14) extends generally vertically from the base. Lift drive means (16) are associated with the lift column for driving an end effectuator (18) along the lift column, the end of effectuator adapted for engaging a load. A programmable controller (90) operates the lift drive means to position the end effectuator at at least one predetermined height position on the lift column. The controller is adapted for storing a plurality of height adjustments as sequential steps, and the controller operates the lift drive means to place the end effectuator sequentially at the sequence of predetermined height positions.
    Type: Application
    Filed: April 2, 2003
    Publication date: November 6, 2003
    Inventor: Earl L Hagman