Patents by Inventor Mark Wojtkiewicz

Mark Wojtkiewicz 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: 20100144236
    Abstract: The present invention relates to an activity system that can be used with a supply of fluid, such as water. In particular, the present invention relates to an activity system that includes a supply unit or station and an activity unit that can be used with the supply unit. The supply unit is configured to supply a fluid to the activity unit station when a user engages the activity unit with the supply unit.
    Type: Application
    Filed: December 9, 2008
    Publication date: June 10, 2010
    Inventors: Ronald Asbach, Mark Wojtkiewicz
  • Patent number: 6964634
    Abstract: A base releasably coupleable to a pogo stick tip for added stability and prolonged enjoyment of the pogo stick.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: November 15, 2005
    Assignee: Mattel, Inc.
    Inventors: Mark Wojtkiewicz, David E. Grober, David G. Waples
  • Patent number: 6877501
    Abstract: A ball launching apparatus configured to launch balls to a user. The ball launching apparatus is configured such that a user may change an angle of trajectory T of launched balls by simply resting the ball launching apparatus on one of two different base portions. The ball launching apparatus is configured to receive, feed, and launch balls having different shapes, such as baseballs and footballs. A ball feed mechanism of the ball launching apparatus is driven by ball propulsion mechanism of the ball launching apparatus.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: April 12, 2005
    Assignee: Mattel, Inc.
    Inventors: Mark Wojtkiewicz, Ross Rumfola, III, Kevin R. Shinn, Dave Moomaw
  • Patent number: 6857965
    Abstract: A suspension swing including a seat and a recline mechanism is disclosed. The angle of inclination of the seat can be adjusted using the recline mechanism. In one embodiment, the recline mechanism includes a movable member that is coupled to the seat for movement relative thereto.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: February 22, 2005
    Assignee: Mattel, Inc.
    Inventors: Peter Pook, Gerald P. Sitarski, Mark Wojtkiewicz
  • Publication number: 20040198510
    Abstract: A suspension swing including a seat and a recline mechanism is disclosed. The angle of inclination of the seat can be adjusted using the recline mechanism. In one embodiment, the recline mechanism includes a movable member that is coupled to the seat for movement relative thereto.
    Type: Application
    Filed: March 5, 2003
    Publication date: October 7, 2004
    Inventors: Peter Pook, Gerald P. Sitarski, Mark Wojtkiewicz
  • Publication number: 20040084041
    Abstract: A ball launching apparatus configured to launch balls to a user. The ball launching apparatus is configured such that a user may change an angle of trajectory T of launched balls by simply resting the ball launching apparatus on one of two different base portions. The ball launching apparatus is configured to receive, feed, and launch balls having different shapes, such as baseballs and footballs. A ball feed mechanism of the ball launching apparatus is driven by ball propulsion mechanism of the ball launching apparatus.
    Type: Application
    Filed: August 5, 2003
    Publication date: May 6, 2004
    Inventors: Mark Wojtkiewicz, Ross Rumfola, Kevin R. Shinn, Dave Moomaw
  • Patent number: 6637422
    Abstract: A ball launching apparatus configured to launch balls to a user. The ball launching apparatus is configured such that a user may change an angle of trajectory T of launched balls by simply resting the ball launching apparatus on one of two different base portions. The ball launching apparatus is configured to receive, feed, and launch balls having different shapes, such as baseballs and footballs. A ball feed mechanism of the ball launching apparatus is driven by ball propulsion mechanism of the ball launching apparatus.
    Type: Grant
    Filed: December 21, 2001
    Date of Patent: October 28, 2003
    Assignee: Mattel, Inc.
    Inventors: Mark Wojtkiewicz, Ross Rumfola, III, Kevin R. Shinn, Dave Moomaw
  • Publication number: 20030116151
    Abstract: A ball launching apparatus configured to launch balls to a user. The ball launching apparatus is configured such that a user may change an angle of trajectory T of launched balls by simply resting the ball launching apparatus on one of two different base portions. The ball launching apparatus is configured to receive, feed, and launch balls having different shapes, such as baseballs and footballs. A ball feed mechanism of the ball launching apparatus is driven by ball propulsion mechanism of the ball launching apparatus.
    Type: Application
    Filed: December 21, 2001
    Publication date: June 26, 2003
    Inventors: Mark Wojtkiewicz, Ross Rumfola, Kevin R. Shinn, Dave Moomaw
  • Publication number: 20030073547
    Abstract: A base releasably coupleable to a pogo stick tip for added stability and prolonged enjoyment of the pogo stick.
    Type: Application
    Filed: October 15, 2001
    Publication date: April 17, 2003
    Inventors: Mark Wojtkiewicz, David E. Grober, David G. Waples
  • Publication number: 20030069093
    Abstract: A sports training device having a line, an anchor coupled to a first end of the line, a glove coupled to a second end of the line, and a ball slidably mounted on the line. The anchor is configured to engage with a stationary support surface so as to retain the first end of the line in a stationary position. In use, one user will hold the glove away from the anchor so as to tension the line and then propel the ball along the line toward the opposite end. Another user can then strike the sliding ball with a bat, or other striking implement, and the one user can catch the ball with the glove.
    Type: Application
    Filed: October 9, 2001
    Publication date: April 10, 2003
    Inventors: Mark Wojtkiewicz, David Grober, David G. Waples, Ross Rumfola