IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0786796
(2007-04-12)
|
등록번호 |
US-7648280
(2010-02-22)
|
발명자
/ 주소 |
- Struziak, Ronald M.
- McAuliffe, Christopher
- Stark, Jeffery L.
|
출원인 / 주소 |
- Hamilton Sundstrand Corporation
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
13 인용 특허 :
7 |
초록
▼
A hydrodynamic fluid film journal bearing system includes a journal sleeve and one or more hydrodynamic fluid film foils positioned at least partially within the journal sleeve. The journal sleeve defines an inner diameter surface, an outer diameter surface, a wall thickness between the inner and ou
A hydrodynamic fluid film journal bearing system includes a journal sleeve and one or more hydrodynamic fluid film foils positioned at least partially within the journal sleeve. The journal sleeve defines an inner diameter surface, an outer diameter surface, a wall thickness between the inner and outer diameter surfaces, and opposite first and second ends. The wall thickness of the journal sleeve is reduced at a first region located between the first and second ends, and a chamfered region is formed on the outer diameter surface of the journal sleeve between the first o-ring land and the first end of the journal sleeve.
대표청구항
▼
What is claimed is: 1. A hydrodynamic fluid film journal bearing system comprising: a journal sleeve that defines an inner diameter surface, an outer diameter surface, a wall thickness between the inner and outer diameter surfaces, a first o-ring land, and opposite first and second ends, wherein th
What is claimed is: 1. A hydrodynamic fluid film journal bearing system comprising: a journal sleeve that defines an inner diameter surface, an outer diameter surface, a wall thickness between the inner and outer diameter surfaces, a first o-ring land, and opposite first and second ends, wherein the wall thickness is reduced at a first region located between the first and second ends, wherein the first o-ring land is formed at the outer diameter surface of the journal sleeve adjacent to the first end, and wherein a chamfered region is formed on the outer diameter surface of the journal sleeve between the first o-ring land and the first end of the journal sleeve; and one or more hydrodynamic fluid film foils positioned at least partially within the journal sleeve. 2. The system of claim 1, wherein the wall thickness of the journal sleeve is reduced by a groove formed at the outer diameter surface of the journal sleeve. 3. The system of claim 1 and further comprising: a second o-ring land formed at the outer diameter surface of the journal sleeve adjacent to the second end. 4. The system of claim 3, wherein the second o-ring land is formed at the outer diameter surface of the journal sleeve immediately adjacent to the second end for assembly foolproofing. 5. The system of claim 3, wherein the wall thickness of the journal sleeve is reduced by a groove formed between the first and second o-ring lands at the outer diameter surface of the journal sleeve, the groove comprising: a middle portion; a first tapered portion located between the middle portion and the first o-ring land; and a second tapered portion located between the middle portion and the second o-ring land. 6. The system of claim 5, wherein the middle portion of the groove is substantially cylindrically shaped. 7. The system of claim 3 and further comprising: a housing having first and second o-ring engagement grooves; a first o-ring engaged between the first o-ring engagement groove in the housing and the first o-ring land of the journal sleeve; and a second o-ring engaged between the second o-ring engagement groove in the housing and the second o-ring land of the journal sleeve. 8. A hydrodynamic fluid film journal bearing system comprising: a rotatable shaft; a journal sleeve positioned about the shaft, the journal sleeve defining an inner diameter surface, an outer diameter surface, a wall thickness between the inner and outer diameter surfaces, and opposite first and second ends; one or more hydrodynamic fluid film foils disposed between the journal sleeve and the shaft; a first o-ring land formed at the outer diameter surface of the journal sleeve adjacent to the first end; a second o-ring land formed at the outer diameter surface of the journal sleeve adjacent to the second end; and a weight reduction groove formed at the outer diameter surface of the journal sleeve, wherein the weight reduction groove reduces the wall thickness of the journal sleeve at a first region located between the first and second o-ring lands, and wherein the weight reduction groove includes at least one tapered portion. 9. The system of claim 8 and further comprising: a chamfered region formed on the outer diameter surface of the journal sleeve between the first o-ring land and the first end of the journal sleeve. 10. The system of claim 9, wherein the second o-ring land is formed at the outer diameter surface of the journal sleeve immediately adjacent to the second end. 11. The system of claim 8, wherein the weight reduction groove comprises: a middle portion; and said at least one tapered portion comprises: a first tapered portion located between the middle portion and the first o-ring land; and a second tapered portion located between the middle portion and the second o-ring land. 12. The system of claim 11, wherein the middle portion of the weight reduction groove is substantially cylindrically shaped. 13. The system of claim 8 and further comprising: a housing having first and second o-ring engagement grooves; a first o-ring engaged between the first o-ring engagement groove in the housing and the first o-ring land of the journal sleeve; and a second o-ring engaged between the second o-ring engagement groove in the housing and the second o-ring land of the journal sleeve. 14. A hydrodynamic fluid film journal bearing system comprising: a journal sleeve formed as a unitary body positioned about the shaft, the journal sleeve defining an inner diameter surface, an outer diameter surface, a wall thickness between the inner and outer diameter surfaces, and opposite first and second ends; one or more hydrodynamic fluid film foils positioned at least partially within the journal sleeve; a first o-ring land formed at the outer diameter surface of the journal sleeve adjacent to the first end; a second o-ring land formed at the outer diameter surface of the journal sleeve adjacent to the second end; a housing having first and second o-ring engagement grooves; a first o-ring engaged between the first o-ring engagement groove in the housing and the first o-ring land of the journal sleeve; a second o-ring engaged between the second o-ring engagement groove in the housing and the second o-ring land of the journal sleeve; and a chamfered region formed on the outer diameter surface of the journal sleeve between the first o-ring land and the first end of the journal sleeve for reducing a risk of damage to the first and second o-rings during assembly of the system. 15. The system of claim 14, wherein the second o-ring land is formed at the outer diameter surface of the journal sleeve immediately adjacent to the second end. 16. The system of claim 14 and further comprising: a groove formed at the outer diameter surface of the journal sleeve. 17. The system of claim 16, wherein the groove reduces the wall thickness of the journal sleeve at a first region located between the first and second o-ring lands. 18. The system of claim 16, wherein the groove comprises: a middle portion; a first tapered portion located between the middle portion and the first o-ring land; and a second tapered portion located between the middle portion and the second o-ring land. 19. The system of claim 18, wherein the middle portion of the groove is substantially cylindrically shaped.
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