Patents by Inventor Angelo Lee Spedale, Jr.

Angelo Lee Spedale, Jr. 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).

  • Apparatus for facilitating removal of a casing of an overburden drilling equipment from a bore
    Patent number: 5921332
    Abstract: An overburden drilling device includes a drill bit body, a percussion element for applying impacts to the body, and a casing attached to the body. The casing is connected to the drill bit body by a casing shoe. The casing shoe and the drill bit body are interconnected by radially overlapping walls so that the drill bit body pulls the casing along during a drilling operation while rotating relative thereto. A wedge-shaped member is provided around the casing close to a rear end of the casing shoe so as to facilitate removal of the drilling equipment from a bore.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: July 13, 1999
    Assignee: Sandvik AB
    Inventor: Angelo Lee Spedale, Jr.
  • Methods and apparatus for attaching a casing to a drill bit in overburden drilling equipment
    Patent number: 5839519
    Abstract: An overburden drilling device includes a drill bit body, a percussion element for applying impacts to the body, and a casing attached to the body. The casing is connected to the drill bit body by a casing shoe which comprises semi-cylindrical halves which are held together by a circular ring that is welded to the halves. The casing shoe and the drill bit body are interconnected by radially overlapping walls so that the drill bit body pulls the casing along during a drilling operation.
    Type: Grant
    Filed: November 8, 1996
    Date of Patent: November 24, 1998
    Assignee: Sandvik AB
    Inventor: Angelo Lee Spedale, Jr.