Gear geometry with fluid reservoir and fluid paths
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B64C-027/00
F16H-057/04
B64C-027/12
출원번호
US-0930488
(2013-06-28)
등록번호
US-9677663
(2017-06-13)
발명자
/ 주소
Sammataro, Stephen R.
Patry, Ryan
출원인 / 주소
SIKORSKY AIRCRAFT CORPORATION
대리인 / 주소
Cantor Colburn LLP
인용정보
피인용 횟수 :
1인용 특허 :
12
초록▼
A helicopter is provided and includes an engine, a rotor, a gear train configured to transmit torque from the engine to the rotor such that the rotor is rotatable about an axis of rotation, a primary lubrication system, which is configured to supply the gear train with a fluid and a secondary lubric
A helicopter is provided and includes an engine, a rotor, a gear train configured to transmit torque from the engine to the rotor such that the rotor is rotatable about an axis of rotation, a primary lubrication system, which is configured to supply the gear train with a fluid and a secondary lubrication system disposed in a gear of the gear train, including a fluid reservoir, which is configured to receive and store the fluid and to continue to supply the gear train with the fluid following a failure of the primary lubrication system.
대표청구항▼
1. A gear box to transmit torque from an engine to a driven element, the gear box comprising: a gear train configured to transmit the torque from the engine to the driven element, the gear train including a gear configured to be used within a secondary lubrication system of said gear train, said gea
1. A gear box to transmit torque from an engine to a driven element, the gear box comprising: a gear train configured to transmit the torque from the engine to the driven element, the gear train including a gear configured to be used within a secondary lubrication system of said gear train, said gear comprising:a body having an axis of rotation, an axial face oriented transversely with respect to the axis and a radial face oriented transversely with respect to the axial face,the axial face being formed to define a fluid reservoir, andfluid paths defined in the body extending from the fluid reservoir to the radial face and being rotatable about the axis to encourage a flow of fluid from the fluid reservoir, through the holes and to the radial face. 2. The gear box according to claim 1, wherein the gear comprises a cylindrical gear. 3. The gear box according to claim 1, wherein the fluid comprises lubricant. 4. The gear box according to claim 3, further comprising a primary lubrication system configured to provide the lubricant to the gear train. 5. The gear box according to claim 4, wherein the lubricant overflows into the fluid reservoir. 6. The gear box according to claim 4, wherein the fluid reservoir has sufficient volume to maintain a supply of lubricant therein for a predefined flight time following a failure of the primary lubrication system. 7. A gear configured to be used within a secondary lubrication system of a gear train, said gear comprising: an annular body having a poloidal axis, opposed axial faces oriented transversely with respect to the poloidal axis and inward and outward radial faces extending between the first and second axial faces,an aperture in the radial face extending between the first and second axial faces,a rim included in at least one of the axial faces and a first channel recessed from a plane of the rim in a direction defined along the poloidal axis and shaped to hold a fluid, andholes in the annular body defining fluid paths extending from the first channel to the outward radial face such that the fluid passes from the first channel though the fluid paths when the gear is rotated. 8. The gear according to claim 7, wherein the outward radial face comprises gear teeth. 9. The gear according to claim 8, wherein the gear teeth are hardened to a greater degree than a remainder of the annular body. 10. The gear according to claim 8, wherein the holes are positioned at roots between the gear teeth. 11. The gear according to claim 8, wherein the holes are positioned at top lands of the gear teeth. 12. The gear teeth according to claim 8, wherein the holes are about 0.0025-0.0075 inches in diameter. 13. The gear according to claim 7, wherein the annular body comprises one or more of steel or carburized steel. 14. The gear according to claim 7, wherein the annular body is disposable such that the poloidal axis is aligned with gravity. 15. The gear according to claim 7, wherein the first channel is receptive of and configured to store fluid. 16. The gear according to claim 15, wherein the annular body is rotatable about the poloidal axis to thereby encourage a flow of the received and stored fluid through the holes. 17. The gear according to claim 7, wherein the gear is a portion of a gear train of a helicopter, the helicopter further comprising an engine and a rotor, and the gear train is configured to transmit torque from the engine to the rotor such that the rotor is rotatable about an axis of rotation. 18. The gear according to claim 17, wherein the helicopter further comprises a primary lubrication system configured to supply the gear train with a fluid. 19. The gear according to claim 18, wherein the gear includes a fluid reservoir configured to receive and store the fluid and to supply the gear train with the fluid following a failure of the primary lubrication system. 20. The gear according to claim 19, wherein the holes in the annular body extend from the fluid reservoir into the gear train.
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이 특허에 인용된 특허 (12)
Cycon James P. (Orange CT) Kohlhepp Fred W. (Hamden CT) Millea Vincent F. (Stratford CT), Coaxial transmission/center hub subassembly for a rotor assembly having ducted, coaxial counter-rotating rotors.
Krauss Timothy A. (Harwinton CT) Hunter David H. (Cheshire CT) Beatty Robert D. (Trumbull CT), Rotor blade subassembly for a rotor assembly having ducted, coaxial counter-rotating rotors.
Chaudhry, Zaffir; Collins, Andrew John; Jonsson, Ulf J; Sun, Fanping; Wake, Brian E; O'Callaghan, Michael G; Yeh, Jimmy Lin-Min, Self-lubricated actuator for on-blade rotor control.
Cycon James P. (Orange CT) Hunter David H. (Cheshire CT) Krauss Timothy A. (Harwinton CT), Snubber assembly for a rotor assembly having ducted, coaxial counter-rotating rotors.
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