Patents by Inventor Keith E. Kropf

Keith E. Kropf 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: 7615038
    Abstract: A disposable diaper is provided comprising a diaper body having an outer surface. The disposable diaper includes a waterproof layer secured to an outer surface layer of the diaper body to form a pocket between the layer and the outer surface. The disposable diaper further comprises means for sealing the pocket to seal in waste and odor. A method for sealing and disposing of the diaper also is provided, comprising the steps of rolling the diaper inwardly toward the pocket, inverting the pocket to receive the diaper body, and sealing the pocket to enclose the diaper body.
    Type: Grant
    Filed: February 12, 2004
    Date of Patent: November 10, 2009
    Inventors: Keith E. Kropf, Andrew E. Kropf
  • Patent number: 7013517
    Abstract: A combination rotating/tipping mechanism for an agitator arranged in an inner tub of a washing machine includes a drive member, a tipping member fixedly mounted to the agitator and pivotally mounted to the drive member, and a pivot link interconnecting the tipping member and the inner tub of the machine. In operation, rotation of the drive member imparts an oscillating/rotating motion to the tipping member about a rotational axis. Simultaneously, the pivot link is caused to pivot about a pivotal axis, thereby restricting the movement of the tipping member and causing the tipping member to pivot about another pivotal axis.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: March 21, 2006
    Assignee: Maytag Corp.
    Inventor: Keith E. Kropf
  • Patent number: 6886372
    Abstract: A tipping mechanism for a vertical axis washing machine includes an agitator, a drive member, a tipping member and a stationary pivot member. The pivot member preferably takes the form of a ball which is received in a socket defined by the tipping member. In a preferred form of the invention, the pivot member is provided with at least one guide member which is received in an arcuate channel, including both horizontal and vertical components, defined by the tipping member. In operation, the drive member causes the tipping member to rotate, while the arrangement of the guide member in the arcuate channel forces the tipping member to shift in various planes. This movement imparts a combination rotating and tipping motion to the agitator.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: May 3, 2005
    Assignee: Maytag Corporation
    Inventor: Keith E. Kropf
  • Publication number: 20040158934
    Abstract: A washing machine including a perforated inner basket and an outer tub is disclosed. The outer tub includes one or more grooves on its inside wall to redirect extracted water from the perforated inner basket downwardly into a collection area for disposal. The groove may be generally vertical or angled along the upper portion of the inner wall of the tub. The groove preferably includes an undercut portion that extends in the same direction as the perforated basket spins.
    Type: Application
    Filed: February 14, 2003
    Publication date: August 19, 2004
    Inventors: Jeffrey L. Sears, Daniel F. Wunderlich, John E. Thomas, Keith E. Kropf
  • Publication number: 20040111809
    Abstract: A combination rotating/tipping mechanism for an agitator arranged in an inner tub of a washing machine includes a drive member, a tipping member fixedly mounted to the agitator and pivotally mounted to the drive member, and a pivot link interconnecting the tipping member and the inner tub of the machine. In operation, rotation of the drive member imparts an oscillating/rotating motion to the tipping member about a rotational axis. Simultaneously, the pivot link is caused to pivot about a pivotal axis, thereby restricting the movement of the tipping member and causing the tipping member to pivot about another pivotal axis.
    Type: Application
    Filed: December 13, 2002
    Publication date: June 17, 2004
    Applicant: Maytag Corporation
    Inventor: Keith E. Kropf
  • Publication number: 20040111808
    Abstract: A tipping mechanism for a vertical axis washing machine includes an agitator, a drive member, a tipping member and a stationary pivot member. The pivot member preferably takes the form of a ball which is received in a socket defined by the tipping member. In a preferred form of the invention, the pivot member is provided with at least one guide member which is received in an arcuate channel, including both horizontal and vertical components, defined by the tipping member. In operation, the drive member causes the tipping member to rotate, while the arrangement of the guide member in the arcuate channel forces the tipping member to shift in various planes. This movement imparts a combination rotating and tipping motion to the agitator.
    Type: Application
    Filed: December 13, 2002
    Publication date: June 17, 2004
    Applicant: Maytag Corporation
    Inventor: Keith E. Kropf
  • Patent number: 6220063
    Abstract: A washing machine includes a cabinet with an opening. A wash basket is mounted within the cabinet for rotation about a wash basket axis, and includes an access opening through which clothes may be loaded and unloaded. At least one agitator is mounted within the basket for rotation about an agitator axis which is at an angle different from the angle of the wash basket axis. A drive mechanism bathed by washing fluid interconnects a drive motor, the wash basket, and the agitator for rotating the agitator about its rotational axis.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: April 24, 2001
    Assignee: Maytag Corporation
    Inventors: Daniel F. Wunderlich, John F. Broker, Keith E. Kropf, John E. Thomas
  • Patent number: 5440903
    Abstract: A washing machine agitator includes a vertical barrel having a tapered skirt connected to the lower end thereof. A plurality of lower vanes are connected to the barrel and extend radially outwardly adjacent the tapered skirt. A splash rib extends circumferentially around the barrel adjacent its upper end. A plurality of triangular vanes are connected to the barrel and extend upwardly to abut against the downwardly presented surface of the splash rib. A number of pairs of rectangular ribs are also attached to the barrel between the triangular vanes and extend upwardly to abut the splash rib.
    Type: Grant
    Filed: July 6, 1994
    Date of Patent: August 15, 1995
    Assignee: Maytag Corporation
    Inventors: Keith E. Kropf, Richard P. Bergeson, Luann E. Fitzpatrick
  • Patent number: 5440086
    Abstract: A switch mechanism is provided for use in an appliance having a movable appliance member mounted therein for movement between a desired and an undesired position. A first switch is mounted on the appliance and is changeable from an open condition to a closed condition. A switch arm is moveably mounted to the appliance for movement from a first switch arm position permitting the first switch to be in one of its open or closed positions to a second switch arm position permitting the switch to be in the other of its open and closed conditions. The switch arm is moveable to a third switch arm position in response to movement of the moveable appliance member to its undesired position. In its third switch arm position the switch arm permits the first switch to return to its open condition.
    Type: Grant
    Filed: April 4, 1994
    Date of Patent: August 8, 1995
    Assignee: Maytag Corporation
    Inventor: Keith E. Kropf
  • Patent number: 5303997
    Abstract: A basket and mounting arrangement for use in a refrigerator/freezer storage compartment is disclosed. The basket is provided with a plurality of generally longitudinally extending support rails which are carried on each side of the basket and which are adapted to be slidably received in a pair of guide members secured to opposing sidewalls of the storage compartment. In one embodiment, the plurality of support rails comprise a first pair which are located on opposite sides of the basket in a substantially horizontal first plane and a second pair of support rails which are located on opposite sides of the basket and are vertically spaced a predetermined distance from the first pair of support rails in a substantially horizontal second plane. Either pair of support rails can be readily engaged with the pair of guide members to alter the vertical position of the basket.
    Type: Grant
    Filed: October 6, 1992
    Date of Patent: April 19, 1994
    Assignee: Maytag Corporation
    Inventor: Keith E. Kropf
  • Patent number: 5174618
    Abstract: An appliance door latch assembly includes a strike member pivotally mounted to the door frame of an appliance. A spring yieldably urges the strike member to a latch position, and the strike member is movable against the bias of the spring from the latch position. A fixed bolt is mounted to the appliance door and adapted to engage the strike member and urge the strike member upwardly to its unlatch position and then downwardly to its latch position where it engages a latching shoulder on the fixed bolt. In moving from its unlatch position to its latch position, the strike member also engages a moveable handle on the door and forces the moveable handle into engagement with plungers of switches so as to cause the switches to be moved to their closed position only when the door is latched.
    Type: Grant
    Filed: December 9, 1991
    Date of Patent: December 29, 1992
    Assignee: Maytag Corporation
    Inventor: Keith E. Kropf
  • Patent number: D357561
    Type: Grant
    Filed: November 17, 1993
    Date of Patent: April 18, 1995
    Assignee: Maytag Corporation
    Inventors: Keith E. Kropf, Richard P. Bergeson, Luann E. Fitzpatrick