Patents by Inventor William R. Blackmore

William R. Blackmore 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).

  • Watercraft roll-on system
    Patent number: 6883454
    Abstract: An auxiliary watercraft roll-on, roll-off cradle system removably attachable to an aft platform of a boat consists of a first set of rollers tiltably attached to the platform and a second set of supporting rollers removably attachable to the platform.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: April 26, 2005
    Assignee: St. Croix Marine Products, Inc.
    Inventor: William R. Blackmore
  • Watercraft roll-on system
    Publication number: 20040099198
    Abstract: An auxiliary watercraft roll-on, roll-off cradle system removably attachable to an aft platform of a boat consists of a first set of rollers tiltably attached to the platform and a second set of supporting rollers removably attachable to the platform.
    Type: Application
    Filed: November 27, 2002
    Publication date: May 27, 2004
    Inventor: William R. Blackmore
  • Boating lift
    Patent number: 6591770
    Abstract: A boat lift for attachment to the aft transom of a larger boat for lifting and lowering smaller water craft, utilizes a single double acting hydraulic cylinder to move a truck horizontally within an enclosure. Cables fixed to the truck cause movement of vertically disposed connectors attached to a intermediate vertically moveable members which in turn include cables attached to vertically moveable support posts which carry water craft support arms.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: July 15, 2003
    Assignee: St. Croix Marine Products, Inc.
    Inventor: William R. Blackmore