Patents by Inventor Stephen J. Prater

Stephen J. Prater 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: 7228939
    Abstract: A platform lift has support posts, and a platform that is coupled to the lift so as to be capable of being raised and lowered relative to the posts. A lifting mechanism moves the platform up and down relative to the posts. The platform has support structure and decking located on top of the support structure so as to provide a work area. An opening is provided in the support structure and the decking, which opening receives an engine, such as an aircraft engine. The platform provides a work area around the entire circumference of the engine, while the platform can be raised or lowered to provide access along the length of the engine. Filler plates can be provide so as to change the size of the opening to work on engines of different diameters.
    Type: Grant
    Filed: March 26, 2004
    Date of Patent: June 12, 2007
    Inventor: Stephen J. Prater
  • Patent number: 4957442
    Abstract: An apparatus and method for assisting the disabled to handwrite. The apparatus comprises a stabilizing weight member. The stabilizing weight member is attached to the hand by a glove or other means. The weight member has angled finger grip protrusions for forming slots for the fingers of the hand to rest in and to hold and conrol the movement of the weight member. The weight member has a roller ball socket in its underside in which is rotatably mounted a roller ball. The weight member also has a writing instrument holder which holds the writing instrument so that it will write on a writing surface when the roller ball is against that surface. The hand moves the weight member by rolling the roller ball against the writing surface so that the writing instrument writes.
    Type: Grant
    Filed: October 24, 1989
    Date of Patent: September 18, 1990
    Inventor: Stephen J. Prater