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| 국가/구분 | United States(US) Patent 등록 |
|---|---|
| 국제특허분류(IPC7판) |
|
| 출원번호 | US-0772104 (2013-02-20) |
| 등록번호 | US-9267347 (2016-02-23) |
| 발명자 / 주소 |
|
| 출원인 / 주소 |
|
| 대리인 / 주소 |
|
| 인용정보 | 피인용 횟수 : 4 인용 특허 : 393 |
A dissolvable tool includes a body having at least one stress riser configured to concentrate stress thereat to accelerate structural degradation of the body through chemical reaction under applied stress within a reactive environment.
1. A tool comprising a dissolvable body having at least one stress riser defined as an indentation in a surface of the dissolvable body having a vertex defined by a cone configured to concentrate stress thereat to accelerate structural degradation of the dissolvable body through chemical reaction un
1. A tool comprising a dissolvable body having at least one stress riser defined as an indentation in a surface of the dissolvable body having a vertex defined by a cone configured to concentrate stress thereat to accelerate structural degradation of the dissolvable body through chemical reaction under applied stress within a reactive environment, wherein the tool is a ball. 2. A tool comprising a dissolvable body having a shell configured to provide structural integrity to the dissolvable body and having at least one stress riser defined as an indentation in a surface of the dissolvable body having a vertex defined by a cone configured to concentrate stress thereat to accelerate structural degradation of the dissolvable body through chemical reaction under applied stress within a reactive environment wherein the shell surrounds a fluidized core. 3. The tool of claim 2, wherein the shell is hollow. 4. A dissolvable tool comprising a body having at least one stress riser configured to concentrate stress thereat to accelerate structural degradation of the body through chemical reaction under applied stress within a reactive environment, wherein at least a portion of the body is made of a powder metal compact, the compact comprising: a substantially-continuous, cellular nanomatrix comprising a nanomatrix material;a plurality of dispersed particles comprising a particle core material that comprises Mg, Al, Zn or Mn, or a combination thereof, dispersed in the cellular nanomatrix; anda solid-state bond layer extending throughout the cellular nanomatrix between the dispersed particles. 5. The tool of claim 4 wherein the at least one stress riser is defined as a indentation in a surface of the dissolvable body having a vertex defined by a cone configured to concentrate stress thereat to accelerate structural degradation of the dissolvable body through chemical reaction under applied stress within a reactive environment. 6. The tool of claim 5, wherein foreign matter is embedded in the dissolvable body and the foreign matter is at least partially exposed to a surface of the dissolvable body. 7. The tool of claim 5, wherein the at least one stress riser is an indentation in a surface of the dissolvable body having a vertex at intersection of at least two surfaces. 8. The tool of claim 5, wherein the applied stress is due to changes in pressure. 9. The tool of claim 5, wherein the applied stress is due to pressure differential applied across a portion of the dissolvable body. 10. The tool of claim 5, wherein the applied stress is due to changes in temperature. 11. The tool of claim 5, wherein the applied stress is due to hydrostatic pressure. 12. The tool of claim 4 wherein the indentation includes a vertex. 13. The tool of claim 12, wherein the vertex is an intersection of at least two surfaces. 14. The tool of claim 12, wherein the vertex is defined by a cone. 15. The dissolvable tool of claim 4, wherein the dispersed particles comprise Mg—Zn, Mg—Zn, Mg—Al, Mg—Mn, Mg—Zn—Y, Mg—Al—Si or Mg—Al—Zn. 16. The dissolvable tool of claim 4, wherein the dispersed particles have an average particle size of about 5 μm to about 300 μm. 17. The dissolvable tool of claim 4, wherein the dispersed particles have an equiaxed particle shape. 18. The dissolvable tool of claim 4, wherein the nanomatrix material comprises Al, Zn, Mn, Mg, Mo, W, Cu, Fe, Si, Ca, Co, Ta, Re or Ni, or an oxide, carbide or nitride thereof, or a combination of any of the aforementioned materials, and wherein the nanomatrix material has a chemical composition and the particle core material has a chemical composition that is different than the chemical composition of the nanomatrix material. 19. The dissolvable tool of claim 4, wherein the cellular nanomatrix has an average thickness of about 50 nm to about 5000 nm.
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