Patents by Inventor David Michael Lilenfeld

David Michael Lilenfeld 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: 8297774
    Abstract: The present invention relates to a booklight which is free-standing or attaches to a book cover, a bed frame or other supporting object to facilitate the reading of a book. Attached to each arm is at least one light-radiating source which may be housed within a shade. The light-radiating source may be an incandescent, fluorescent or LED bulb, or the like, as is known in the art. The angle and direction of each light-radiating source can be manually and separately adjusted by the user to focus light on different areas of the book simultaneously.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: October 30, 2012
    Inventor: David Michael Lilenfeld
  • Patent number: 6819557
    Abstract: An ergonomic stylus for a personal digital assistant, a tablet PC or other computer with a pen-based interface, with a body consisting of a tip and two or more arms. The arms reflexively assume an open position when removed from the pen slot of the pen-based computer and thereby provides the user with an ergonomic gripping area. The arms assume a closed position for storage in the pen slot in the PDA or other pen-based computer. It is therefore the primary object of the current invention to provide users of pen-based computers with a single device which is both comfortable for use over a prolonged period and which is storable in the pen slot of the pen-based computer.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: November 16, 2004
    Inventor: David Michael Lilenfeld
  • Publication number: 20040145866
    Abstract: An ergonomic stylus for computer touch-screen, including that used in personal digital assistants, with a body consisting of a tip and two or more arms. The arms reflexively assume a spread position when removed from the pen slot of a personal digital assistant to be gripped by the user and to provide the user with a hand position which is more relaxed and ergonomic than with styluses known in the art. When being replaced and being stored in the pen slot, the arms of current invention assume a pinched position so that the current invention fits within the limited confines of the pen slot.
    Type: Application
    Filed: January 29, 2003
    Publication date: July 29, 2004
    Inventor: David Michael Lilenfeld
  • Publication number: 20040145579
    Abstract: An ergonomic stylus for a personal digital assistant, a tablet PC or other computer with a pen-based interface, with a body consisting of a tip and two or more arms. The arms reflexively assume an open position when removed from the pen slot of the pen-based computer and thereby provides the user with an ergonomic gripping area. The arms assume a closed position for storage in the pen slot in the PDA or other pen-based computer. It is therefore the primary object of the current invention to provide users of pen-based computers with a single device which is both comfortable for use over a prolonged period and which is storable in the pen slot of the pen-based computer.
    Type: Application
    Filed: September 8, 2003
    Publication date: July 29, 2004
    Inventor: David Michael Lilenfeld
  • Patent number: 6680728
    Abstract: The present invention is a cursor control device to be used in conjunction with a computer which allows for convenient, easy and ergonomic hand-held or work surface use. Actuation of the buttons on the device require only the natural flexing or squeezing motion of the fingers and thumb. The device can be used in either mode without mechanical or electrical change.
    Type: Grant
    Filed: January 24, 2000
    Date of Patent: January 20, 2004
    Inventor: David Michael Lilenfeld