Claims
- 1. A component which is bolted to a support structure in which a bolt hole for securing said component to said structure extends through said component and into said structure, the improvement wherein:said component is sintered powder metal and has an integral boss protruding from said component around said bolt hole.
- 2. The improvement of claim 1, wherein said boss is tapered.
- 3. The improvement of claim 1, wherein axial splines are provided on the outside of said boss.
- 4. The improvement of claim 1, wherein a lead-in radius is provided on a leading edge of said boss.
- 5. The improvement of claim 1, wherein said component is made of a liquid phase sintering powder metal material.
- 6. The improvement of claim 5, wherein said material is a powder metal alloy of iron containing phosphorus from ferrophosphorus powder.
- 7. The improvement of claim 6, wherein said material has a phosphorus content of 0.4 to 0.7% and a carbon content of 0 to 0.8%.
- 8. The improvement of claim 7, wherein said material has a copper content of 0 to 4%.
- 9. The improvement of claim 1, wherein a moat is formed in said component around a trailing end of said boss.
- 10. The improvement of claim 1, wherein said boss is oblong.
- 11. The improvement of claim 1, wherein said component has a planar surface which abuts a planar surface of said structure, and wherein a void is formed in said planar surface.
- 12. The improvement of claim 1, wherein said support structure has a counterbore around said bolt hole for receiving said boss.
- 13. The improvement of claim 1, wherein said hole in said structure is threaded.
- 14. In a casting insert which is placed in a casting die and has a material cast around it, said insert having at least one hole therein, the improvement wherein:said insert is sintered powder metal and has an integral boss protruding from a surface of said insert around said hole.
CROSS REFERENCE TO RELATED APPLICATIONS
This application claims the benefit of U.S. Provisional Patent Application Ser. No. 60/168,245 filed Dec. 1, 1999 and is a continuation in part of U.S. patent application Ser. No. 09/155,781 filed Oct. 2, 1998, which is the national phase in the United States of International Patent Application Serial No. PCT/US97/04050 filed Mar. 12, 1997, which claims the benefit of U.S. Provisional Patent Application Serial No. 60/016,852 filed May 3, 1996.
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Provisional Applications (2)
|
Number |
Date |
Country |
|
60/168245 |
Dec 1999 |
US |
|
60/016852 |
May 1996 |
US |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09/155781 |
|
US |
Child |
09/527791 |
|
US |