Patents by Inventor Ennis L. Tillman

Ennis L. Tillman 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: 5054157
    Abstract: A vacuum cleaner is provided that is alternatively operable as a stand alone, upright vacuum cleaner and as a canister vacuum cleaner. The vacuum cleaner includes a nozzle assembly having a beater brush, a suction fan and a motor that drives both the beater brush and suction fan. A dirt tube assembly includes a first air flow passageway that directs dirt from the nozzle assembly to a dirt box and also includes a second air flow passageway that directs dirt from the nozzle assembly to a handle. The handle includes an air flow passageway that is coupled to the second air flow passageway in the dirt tube assembly. The handle is alternatively interconnectable with a cap for sealing the handle air flow passageway to operate the vacuum cleaner as a stand alone, upright vacuum cleaner wherein dirt is directed from the nozzle by the nozzle suction fan through the first air flow passageway to the dirt box.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: October 8, 1991
    Assignee: Whirlpool Corporation
    Inventors: Kurt Werner, Leo G. Krieger, Wilbur C. Bewley, Ennis L. Tillman, Richard D. Riesberg
  • Patent number: 5031266
    Abstract: A wand seal assembly for a vacuum cleaner wand provides an improved seal between the telescopic connecting elements of the wand. The seal comprises a two-piece, dual durometer seal having a rigid portion with locking tabs for securing to the wand portion, and a flexible sealing portion.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: July 16, 1991
    Assignee: Whirlpool Corporation
    Inventors: Ennis L. Tillman, Gregg A. Greulich
  • Patent number: 4960446
    Abstract: A dirt receptacle for a vacuum cleaner includes a rigid body for collecting dirt. The body includes an aperture formed in an upper surface thereof through which dirt may flow. One or more apertures are further formed in the sidewall of the rigid body with a filter disposed in each of the apertures through which air may be exhausted from the dirt receptacle. The rigid body further includes one or more air inlet valves that allow air to enter the dirt receptacle for automatic clean out thereof.
    Type: Grant
    Filed: May 19, 1989
    Date of Patent: October 2, 1990
    Assignee: Whirlpool Corporation
    Inventors: Kurt Werner, Leo G. Krieger, Wilbur C. Bewley, Ennis L. Tillman
  • Patent number: 4880258
    Abstract: A vacuum cleaner structure wherein a force transfer structure is provided for facilitated positioning of a locking post provided for resiliently releasably locking a pair of flow passage elements in the vacuum cleaner structure. The force transfer structure defines a large area for facilitated fingertip manipulation and indication to the user of the location of the locking structure. The force transfer structure may be selectively mounted to other structure carried by the flow passage element. In one form, the force transfer structure is mounted to the flow passage element by an annular collar and, in another form, the force transfer structure is mounted directly to the flow passage element by a securing element, such as a rivet.
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: November 14, 1989
    Assignee: Whirlpool Corporation
    Inventors: Ennis L. Tillman, James R. Caldwell