John P Rhoades

US Patent:

20080206460, Aug 28, 2008

Filed:

Feb 14, 2008

Appl. No.:

12/069964

Inventors:

Lawrence J. Rhoades - Naples FL, US
John Y.P. Rhoades - Pittsburgh PA, US

International Classification:

B05D 3/02

US Classification:

427192, 427191

Abstract:

Methods are disclosed for forming a metal substructure that will subsequently be overcoated with ceramic layers to create a dental restoration. The methods involve the steps of providing a metal powder and applying the metal powder to a die and sintering the metal powder to form a solid structure that may be used as a coping. The application of the metal powder is done in a controlled fashion while minimizing the amount of necessary handwork. These application methods include: (a) alternatingly applying an adhesive and a metal powder to the selected portion of the die surface; and (b) forming the metal powder into a viscous slurry or slip and then dipping the die therein or spraying or pouring the slurry or slip onto the selected portion of the die surface.

US Patent:

51878666, Feb 23, 1993

Filed:

Sep 3, 1991

Appl. No.:

7/753726

Inventors:

John P. Rhoades - Mansfield OH

Assignee:

Copperweld Corporation - Pittsburgh PA

International Classification:

B23C 308

US Classification:

298881

Abstract:

A cam shaft in which a shaft member is formed by drawing a length of tubing over a mandrel and through a die. A second length of tubing is drawn to a larger diameter and is then shaped to form cam members which are attached to the shaft member. Circular journal members may be formed in the same manner and attached to the shaft member.