Flange assembly, chassis actuator and method for producing the flange arrangment
US-2016303940-A1 · Oct 20, 2016 · US
Metallic hollow valve
US9255559B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9255559-B2 |
| Application number | US-201414192851-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 27, 2014 |
| Priority date | Feb 28, 2013 |
| Publication date | Feb 9, 2016 |
| Grant date | Feb 9, 2016 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A metallic hollow valve may include a tubular shaft having a cavity. The shaft may be coupled to a valve head. The shaft may have an external diameter of 5.0 mm<d a <6.0 mm and an internal diameter of 3.0 mm<d i <4.6 mm. The hollow valve may include a cavity disposed in the valve head. A wall surrounding the cavity in the valve head may include a thickness of 1.0 mm<b 1,2 <2.0 mm.
First claim
Opening claim text (preview).
The invention claimed is: 1. A metallic hollow valve, comprising: a tubular shaft having a cavity, the shaft coupled to a valve head, wherein the shaft has an external diameter of 5.0 mm<d a <6.0 mm and an internal diameter of 3.0 mm<d i <4.6 mm, a cavity disposed in the valve head, a wall surrounding the cavity in the valve head including a thickness of 1.0 mm<b 1,2 <2.0 mm, and wherein a surface roughness R Z of an inner wall of at least one of the cavity in the valve head and the cavity in the shaft is greater than 10 μm. 2. The hollow valve according to claim 1 , further comprising a wall surrounding the cavity in the shaft including a thickness of 0.7 mm<b 3 <1.5 mm. 3. The hollow valve according to claim 2 , wherein the shaft and valve head include at least one of X45CrSi9-3, X50CrMnNiNbN21-9, NiCr20TiAl and NCF 3015 steel. 4. The hollow valve according to claim 2 , wherein the cavity in the shaft is drilled in the shaft. 5. The hollow valve according to claim 4 , wherein the surface roughness R Z of the at least one of the cavity in the valve head and the cavity in the shaft is greater than 16 μm. 6. The hollow valve according to claim 2 , wherein at least one of the shaft and valve head includes at least one of X45CrSi9-3, X50CrMnNiNbN21-9, NiCr20TiAl and NCF 3015 steel. 7. The hollow valve according to claim 6 , wherein the cavity in the valve head is configured as at least one of round, ellipsoid, and cone-shaped. 8. The hollow valve according to claim 6 , wherein the surface roughness R Z is greater than 16 μm. 9. The hollow valve according to claim 1 , wherein the shaft and valve head include at least one of X45CrSi9-3, X50CrMnNiNbN21-9, NiCr20TiAl and NCF 3015 steel. 10. The hollow valve according to claim 1 , wherein the cavity in the valve head is produced by electrochemical removal at least in a region of the surrounding inner wall. 11. The hollow valve according to claim 10 , wherein the cavity in the valve head is configured as at least one of round, ellipsoid, and cone-shaped. 12. The hollow valve according to claim 10 , wherein the surface roughness R Z of the inner wall of the cavity in the valve head is greater than 16 μm. 13. The hollow valve according to claim 1 , wherein the cavity in the valve head is configured as at least one of round, ellipsoid and cone-shaped. 14. The hollow valve according to claim 1 , wherein the cavity in the shaft is drilled in the shaft. 15. The hollow valve according to claim 1 , wherein the surface roughness R Z of the inner wall of at least one of the cavity in the valve head and the cavity in the shaft is greater than 16 μm. 16. The hollow valve according to claim 1 , wherein the surface roughness R Z of the inner wall of the cavity in the valve head greater than 16 μm. 17. The hollow valve according to claim 1 , wherein the surface roughness R Z of the inner wall of the cavity in the shaft is greater than 16 μm.
Assignees
Inventors
Classifications
Rolling condition · CPC title
- B60G21/0555Primary
including an actuator inducing vehicle roll · CPC title
Self-controlled or adjusted · CPC title
Oversteer · CPC title
Understeer · CPC title
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Frequently asked questions
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- What does patent US9255559B2 cover?
- A metallic hollow valve may include a tubular shaft having a cavity. The shaft may be coupled to a valve head. The shaft may have an external diameter of 5.0 mm<d a <6.0 mm and an internal diameter of 3.0 mm<d i <4.6 mm. The hollow valve may include a cavity disposed in the valve head. A wall surrounding the cavity in the valve head may include a thickness of 1.0 mm<b 1,2 <2.0 mm.
- Who is the assignee on this patent?
- Mahle Int Gmbh
- What technology area does this patent fall under?
- Primary CPC classification B60G21/0555. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Feb 09 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).