Cast collimator and method for making same

• US 20050269052A1
• Filed: 04/07/2005
• Published: 12/08/2005
• Est. Priority Date: 10/07/2002
• Status: Abandoned Application

• Current Assignee: Jonathan L. Rolfe, Mark Jasmin, Robert F. Lynch
• Original Assignee: Jonathan L. Rolfe, Mark Jasmin, Robert F. Lynch
• Inventors: Jasmin, Mark, Rolfe, Jonathan L., Lynch, Robert F.
• Application Number:
  US11/100,700
• Publication Number:
  US 20050269052A1
• Time in Patent Office: Days
• US Class Current: 164/61
• CPC Class Codes: B22D 25/06 by its physical properties B22D27/00 takes precedence
• CPC Class Codes: B22D 27/04 Influencing the temperature of the metal, e.g. by heating or cooling the mould
• CPC Class Codes: B22D 27/08 Shaking, vibrating, or turning of moulds
• CPC Class Codes: B22D 27/15 by using vacuum

Abstract

There is a method of manufacturing a cast collimator that includes pre-heating a mold, filing the mold with material in a liquid phase, and simultaneously applying vacuum, heat and vibration to the mold until the material reaches a substantially solid phase.

Claims

1. A method of manufacturing a high resolution casting comprising:

pre-heating a mold;

filing the mold with material in a liquid phase;

simultaneously applying vacuum, heat and vibration to the mold before the material reaches a substantially solid phase.

2. The method of claim 1 wherein the pre-heating reaches a temperature that is within approximately 30°

C. to approximately 80°

C. of the material in the liquid phase.

3. The method of claim 1 wherein the material is a mixture of gold and tin.

4. The method of claim 1 wherein the material is selected from a group consisting of antimony, arsenic, barium, beryllium, bismuth, cadmium, gold, indium, lead, mercury, osmium, palladium, platinum, thallium, tin, tungsten, zinc and combinations thereof.

6. The method of claim 1 wherein the material comprises approximately 68 percent bismuth, approximately 20 percent tin, approximately 1.5 percent antimony and approximately 10.5 percent zinc.

7. The method of claim 1 wherein the material comprises approximately 80 percent gold and approximately 10 percent tin.

5. The method of claim I wherein the material is a mixture of bismuth, tin, antimony and zinc.