Patents Assigned to Royal Sovereign Ltd.
  • Patent number: 6319004
    Abstract: A handheld dental tool has a removable silicone tip. The tool includes a handheld shaft having at least one working end. The working end preferably includes a shoulder defined on the working end of the shaft and a spade member extending from the shoulder. The spade member has a longitudinal axis along a length of the spade member that has a generally uniform aspect ratio perpendicular to the longitudinal axis of between 2:1 and 4:1. A tip member comprised of a resilient silicone material that is removably mounted on the spade member. The tip member has a longitudinal axis along a length of the silicone tip and a cavity defined in a rear end of the silicone tip along the longitudinal axis. The cavity is adapted to receive the length of the spade member. The ratio of the length of the silicone tip member to the length of the spade member is greater than 1:1 and less than 2:1. Preferably, the surface of the spade member is smooth and the tip member slides on to and off of the spade member.
    Type: Grant
    Filed: July 31, 2000
    Date of Patent: November 20, 2001
    Assignee: Royal Sovereign Ltd.
    Inventor: Ladd B. Forsline
  • Patent number: 6032322
    Abstract: A silicone paint brush artist's tool includes a handle and a novel painting tip. The painting tip is made of a resilient silicone. In one embodiment, the painting tip has a series of longitudinal slits defined in the tip. In another embodiment, the painting tip has a durometer hardness value of between 20 Shore A to 70 Shore A. In a further embodiment, the painting tip has a generally three-dimensional working surface that includes a concave surface. In still another embodiment, the painting tip has a peripheral, sharp edge for removal of paint. In a still further embodiment, the painting tip has a concave surface for manipulation of paint. The tip is preferably attached to the handle using a ferrule and expansively locking the tip into a cavity of the ferrule by insertion of an insert. The insert may be a common screw or a barbed, fluted extension of the handle. The tips may include an insert cavity and have various shapes and hardnesses and may be optionally color coded.
    Type: Grant
    Filed: August 6, 1996
    Date of Patent: March 7, 2000
    Assignee: Royal Sovereign, Ltd
    Inventor: Ladd B. Forsline