David E Sawyer

US Patent:

6437279, Aug 20, 2002

Filed:

Nov 28, 2000

Appl. No.:

09/723466

Inventors:

David R. Sawyer - Smithfield VA
Johnnie N. Burchett - Courtland VA

Assignee:

Newport News Shipbuilding and Dry Dock Company - Newport News VA

International Classification:

B23K 920

US Classification:

219 99, 219 98

Abstract:

Apparatus and process for safely welding a stud into an overhead workpiece that includes a ferrule having an interrupted perimeter surrounding the stud for contact with the overhead workpiece and a support assembly for connection to a stud gun including a shield surrounding the support assembly and having a continuous perimeter defining a free space by being spaced from the stud and wherein the free space is in communication with the interrupted perimeter of the ferrule. The free space has a width and depth sufficient to receive and contain all molten substances produced during the welding. A fire resistant material is positioned within the free space to hold all these molten substances to thereby safely protect the operator of the stud gun from the gravity induced falling molten substances.

US Patent:

55267661, Jun 18, 1996

Filed:

Nov 28, 1994

Appl. No.:

8/345537

Inventors:

Jerry S. Armstrong - Yorktown VA
Jerome E. Blair - Suffolk VA
Jean S. Pugh - Newport News VA
Allan G. Roy - Yorktown VA
David R. Sawyer - Smithfield VA
Steven D. Tassias - Newport News VA
Rex A. Wallen - Hampton VA

Assignee:

Newport News Shipbuilding and Dry Dock Company - Newport News VA

International Classification:

B63B 3500

US Classification:

114343

Abstract:

A method of making a marine indicia marking on the surface of a steel hull, and the product produced thereby. The method comprises establishing a preconceived pattern for the marking and welding a plurality of nipples to the outside of the hull conforming to the pattern. Preferably, stud arc welding is used to weld the nipples to the hull. The stud used in the stud arc weld gun is of the knock-off variety and includes an upper knock-off portion and a lower permanent stud. After installation, the surface of the stud may be made smooth by grinding or other suitable methods. Finally, the studs and adjacent portions of the hull surface are painted with contrasting color paint.

US Patent:

55868010, Dec 24, 1996

Filed:

Oct 27, 1994

Appl. No.:

8/329929

Inventors:

David R. Sawyer - Smithfield VA
Douglas M. Wheeler - Newport News VA

Assignee:

Newport News Shipbuilding and Dry Dock Company - Newport News VA

International Classification:

B66C 166
F16G 1508

US Classification:

294 11

Abstract:

A stud mounted hoist assembly for lifting, moving, suspending, or loading material and equipment during construction comprises a ring assembly, a welding stud anchor, and a bushing having a chamfered inner cylindrical surface to accommodate weld flash when mounting the assembly to a load or overhead structure. The bushing and ring assembly provide pivot and swivel capability to the mount. One operator can quickly and securely install a temporary lifting point where and when needed without the assistance of support personnel.

US Patent:

58328599, Nov 10, 1998

Filed:

Jan 17, 1996

Appl. No.:

8/587552

Inventors:

David R. Sawyer - Smithfield VA
Bennie C. Steele - Newport News VA

Assignee:

Newport News Shipbuilding and Dry Dock Company - Newport News VA

International Classification:

B63B 5906

US Classification:

114222

Abstract:

A method and apparatus for containment of a space adjacent the hull of a ship to protect the environment from polluting materials resulting from the abrasive blasting, spray painting and the like comprising, welding studs having integral connectors to the hull along a direction substantially fore and aft of the ship. Lines are supported and run relative to the studs. Sections of a shroud are connected to the lines and the lines are drawn to pull one end of the shroud sections proximal to the hull and the other end is fixed remote from the hull. Adjacent sections are secured along their sides. The entire space beneath the shroud and adjacent the hull containing the polluting materials is therefore separated from the environment.

Author:

David T. Sawyer

ISBN #:

0533108756

Author:

David R. Sawyer

ISBN #:

0817011161

Author:

David R. Sawyer

ISBN #:

0829817581

Author:

David E. Sawyer

ISBN #:

0712307230

Author:

David Sawyer

ISBN #:

0521208122

Author:

David Sawyer

ISBN #:

0820429791