Patents by Inventor Laurence E. Holstein

Laurence E. Holstein 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).

  • Blade removing tool for rotary lawn mowers
    Patent number: 6715194
    Abstract: A blade removing tool for rotary lawn mowers includes a central support assembly forming a guide adapted to be positioned over a bolt holding a rotary lawn mower blade in position and to allow the passage of a socket wrench there through. An elongated handle has an interior end coupled to the support assembly and an exterior end adapted to held by a user. A projection extends downwardly from the lower plate perpendicular to the handle and adapted to be positioned on one side of a blade to contact the blade when a socket wrench tends to turn a bolt and the blade.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: April 6, 2004
    Inventors: Kevin R. Sterling, Laurence E. Holstein
  • Blade removing tool for rotary lawn mowers
    Patent number: 6272724
    Abstract: A blade removing tool for rotary lawn mowers includes a central support assembly forming a guide adapted to be positioned over a bolt holding a rotary lawn mower blade in position and to allow the passage of a socket wrench there through. An elongated handle has an interior end coupled to the support assembly and an exterior end adapted to held by a user. A pair of projections extend downwardly from the lower plate parallel with the handle and adapted to be positioned on opposite sides of a blade to contact the blade when a socket wrench tends to turn a bolt and the blade.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: August 14, 2001
    Inventors: Kevin R. Sterling, Laurence E. Holstein