Decoupler devices to prevent backdrive in air turbine starters
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F01D-015/12
F03D-011/02
출원번호
US-0030550
(2008-02-13)
등록번호
US-8105018
(2012-01-31)
발명자
/ 주소
Gockel, Rich
Oman, David
Kumar, Arun
Smith, Doug
Silk, Joe
Ho, Ben
출원인 / 주소
Honeywell International Inc.
대리인 / 주소
Ingrassia Fisher & Lorenz, P.C.
인용정보
피인용 횟수 :
2인용 특허 :
3
초록▼
An air turbine starter for starting an engine includes a housing, and a flow path communicating a flow of gas therethrough; a turbine member; a clutch; and a decoupler device at least partially housed within the output member of the clutch. The decoupler device includes a first shaft portion coupled
An air turbine starter for starting an engine includes a housing, and a flow path communicating a flow of gas therethrough; a turbine member; a clutch; and a decoupler device at least partially housed within the output member of the clutch. The decoupler device includes a first shaft portion coupled to and rotating with the output member and a second shaft portion coupled to and rotating with the engine. The first and second shaft portions are axially aligned and configured to engage each another for rotation in a first direction and to separate from each other in a second direction to decouple the output member of the clutch from the engine. The starter further includes a bearing between the inner surface of the output member and the second shaft portion for reducing friction between the second shaft portion and the inner surface of the output member when the first and second shaft portions are decoupled.
대표청구항▼
1. An air turbine starter for starting an engine, comprising: a housing defining an inlet, an outlet, and a flow path extending between the inlet and the outlet for communicating a flow of gas therethrough;a turbine member journaled within the housing and disposed within the flow path for rotatably
1. An air turbine starter for starting an engine, comprising: a housing defining an inlet, an outlet, and a flow path extending between the inlet and the outlet for communicating a flow of gas therethrough;a turbine member journaled within the housing and disposed within the flow path for rotatably extracting mechanical power from the flow of gas;a gear train drivingly coupled with the turbine member;a clutch coupled with the gear train, the clutch including an output member with an inner surface;a decoupler device at least partially housed within the output member of the clutch, the decoupler device comprising a first shaft portion coupled to and rotating with the output member and a second shaft portion coupled to and rotating with the engine, each of the first shaft and second shaft portions having an outer surface, the first shaft and second shaft portions being axially aligned and configured to engage with each other for rotation in a first direction and to separate from each other in a second direction to decouple the output member of the clutch from the engine; anda bearing between the inner surface of the output member and the second shaft portion for reducing friction between the second shaft portion and the inner surface of the output member when the first and second shaft portions are decoupled. 2. The starter of claim 1, wherein the bearing is positioned on the outer surface of the second shaft portion. 3. The starter of claim 1, wherein the bearing is a wear coating. 4. The starter of claim 3, wherein the wear coating is a first wear coating on the outer surface of the second shaft portion, and the bearing further comprises a second wear coating on the inner surface of the output member. 5. The starter of claim 3, wherein the wear coating has a thickness of about 0.005 inches to about 0.01 inches. 6. The starter of claim 3, wherein the wear coating comprises a tungsten-cobalt carbide coating. 7. The starter of claim 1, wherein the second shaft portion has an outer surface, and the bearing is a bushing positioned on the outer surface of the second shaft portion. 8. The starter of claim 1, wherein the bearing is a ball bearing structure. 9. The starter of claim 8, wherein the ball bearing structure includes an inner bearing ring arranged on the outer surface of the second shaft portion and an outer bearing ring arranged proximate to the inner surface of the output member. 10. The starter of claim 1, wherein the bearing is a roller bearing structure. 11. The starter of claim 10, wherein the roller bearing structure includes a bearing ring arranged on the outer surface of the second shaft portion. 12. The starter of claim 1, wherein the bearing is configured to restrict dynamic movement of the second shaft portion. 13. A decoupler device for decoupling an output member of a starter from an engine, the decoupler device comprising: a first shaft portion configured to be coupled to and rotate with the output member;a second shaft portion configured to be coupled to and rotate with the engine, the first and second shaft portions being axially aligned and configured to engage with each other for rotation in a first direction and to separate from each other in a second direction to decouple the output member from the engine; anda bearing arranged between the output member and the second shaft portion for reducing friction between the second shaft portion and the output member when the first and second shaft portions are decoupled. 14. The device of claim 13, wherein the bearing is positioned within an inner surface of the output member. 15. The device of claim 13, wherein the bearing is a wear coating. 16. The device of claim 15, wherein the wear coating has a thickness of about 0.005 inches to about 0.01 inches. 17. The device of claim 13, wherein the bearing is a bushing positioned within an inner surface of the output member. 18. The device of claim 13, wherein the bearing is a ball-bearing structure. 19. The device of claim 13, wherein the bearing is a roller bearing structure. 20. An air turbine starter for starting an engine, comprising: a housing defining an inlet, an outlet, and a flow path extending between the inlet and the outlet for communicating a flow of gas therethrough;a turbine member journaled within the housing and disposed within the flow path for rotatably extracting mechanical power from the flow of gas;a gear train drivingly coupled with the turbine member;a clutch coupled with the gear train, the clutch including an output member having an inner surface;a decoupler device at least partially housed within the output member of the clutch, the decoupler device comprising a first shaft portion fixed to the output member and a second shaft portion coupled to the engine, each of the first shaft and second shaft portions having an outer surface, the first shaft and second shaft portions being axially aligned and configured to engage with each other for rotation in a first direction and to separate from each other in a second direction to decouple the output member of the clutch from the engine; anda bushing positioned between the inner surface of the output member and the second shaft portion for reducing friction between the second shaft portion and the inner surface of the output member and restrict dynamic movement of the second shaft portion when the first and second shaft portions are decoupled.
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이 특허에 인용된 특허 (3)
Lemelson Jerome (P.O. Box 5076 Incline Village NV 89450), Ball and roller bearings and bearing components.
Laessle David L. (Phoenix AZ) Carlson Todd S. (Chandler AZ) Krochmalny Andrew J. (Tempe AZ) Anderson Leroy C. (Tempe AZ), Decoupler shaft and air turbine starter having such a decoupler.
Libera, Tony; Pardini, Ronald; Peck, Ronald A., Air turbine starter systems including gearbox-integrated clutch modules and gas turbine engines employing the same.
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