Patents by Inventor Steven G. Mitchell

Steven G. Mitchell 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).

  • Recreational surface block locking system
    Patent number: 5865004
    Abstract: A molded rubber recreational block locking system, wherein a molded rubber recreational surface block includes an upper surface and a resilient supporting structure below the upper surface. At least one recessed shoulder is located below the upper surface and intersects a marginal edge of the molded rubber recreational surface block. A fastening device interconnects adjacently positioned recessed shoulders in adjacent molded rubber recreational surface blocks for securing same together. Typically, at least one generally vertically directed through hole extends through each recessed shoulder and a flexible fastening device, such as a fastening strap, interconnects the through holes of adjacently positioned recessed shoulders in adjacent molded rubber recreational surface blocks. A cap covers the fastening device and recessed shoulders of adjacently positioned molded rubber recreational surface blocks.
    Type: Grant
    Filed: January 14, 1997
    Date of Patent: February 2, 1999
    Assignee: SpectraTurf, Inc.
    Inventor: Steven G. Mitchell
  • Recreational surface block
    Patent number: D401355
    Type: Grant
    Filed: March 6, 1996
    Date of Patent: November 17, 1998
    Assignee: Spectra Turf, Inc.
    Inventor: Steven G. Mitchell
  • Recreational surface block
    Patent number: D401361
    Type: Grant
    Filed: March 6, 1996
    Date of Patent: November 17, 1998
    Assignee: Spectra Turf, Inc.
    Inventor: Steven G. Mitchell