IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0847847
(2001-04-30)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- Honeywell International Inc.
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
54 |
초록
▼
A system for controlling one or more jet engine thrust reversers includes a motor, a position sensing device, and a controller circuit. The motor is coupled to one or more jet engine thrust reverser moveable components for moving the one or more thrust reverser moveable components to at least a stow
A system for controlling one or more jet engine thrust reversers includes a motor, a position sensing device, and a controller circuit. The motor is coupled to one or more jet engine thrust reverser moveable components for moving the one or more thrust reverser moveable components to at least a stowed position. The position sensing device is operable to sense at least when the one or more thrust reverser moveable components attain a predetermined position relative to the stowed position. The controller circuit has an output coupled to the motor so the motor rotates at a variable speed in response to a position sensing device that senses when the predetermined position is attained. The system controls the stowage operation of the jet engine thrust reversers such that structural damage is avoided, and/or a limit cycle condition is prevented, and/or engagement of stow locks is assured.
대표청구항
▼
A system for controlling one or more jet engine thrust reversers includes a motor, a position sensing device, and a controller circuit. The motor is coupled to one or more jet engine thrust reverser moveable components for moving the one or more thrust reverser moveable components to at least a stow
A system for controlling one or more jet engine thrust reversers includes a motor, a position sensing device, and a controller circuit. The motor is coupled to one or more jet engine thrust reverser moveable components for moving the one or more thrust reverser moveable components to at least a stowed position. The position sensing device is operable to sense at least when the one or more thrust reverser moveable components attain a predetermined position relative to the stowed position. The controller circuit has an output coupled to the motor so the motor rotates at a variable speed in response to a position sensing device that senses when the predetermined position is attained. The system controls the stowage operation of the jet engine thrust reversers such that structural damage is avoided, and/or a limit cycle condition is prevented, and/or engagement of stow locks is assured. inably rotatable within the second belt pathway of each of said pulley sets. 6. The method of claim 5 including, prior to said film grasping step, the step of electrically isolating the idler pulleys of each pulley set. 7. The method of claim 6 including, prior to said film grasping step, the step of providing a torsional spring tensioning means to the tail pulleys of each pulley set whereby a belt retained by each pulley set may be releasably removed from said pulley set. 8. The method of claim 7 including, prior to said film grasping step, the step of offsetting each pulley set from the other whereby the ribs and grooves of cooperating belts mesh with each other to positively retain one or more layers of film therebetween. 9. The method of claim 8 including, prior to said film grasping step, the step of providing air actuation means for vertically moving one pulley set towards or away from the other pulley set. 10. The method of claim 9 wherein said first heat source providing step includes providing a hot wire assembly, said hot wire assembly including a first wire retention clamp, a second wire retention clamp and a hot wire extending between said first and second retention clamps, said wire have a first wire end and a second wire end, said hot wire assembly being configured to locate the hot wire between the belts of each pulley set and each of said wire retention clamps being functionally adapted to retain one wire end therewithin and to provide for the quick release of the wire end retained. 11. The method of claim 10 wherein said first heat source providing step further includes providing means for diverging said hot wire downwardly from said first wire retention clamp at an acute angle relative to the horizontal and providing means for diverging said hot wire horizontally away from said first belt pathway. 12. The method of claim 11 wherein said first heat source providing step includes the step of providing a second wire retention clamp which is torsionally rotational to apply tension force to said hot wire. 13. The method of claim 12 wherein said steps for fusing said film layers at the horizontal midline of the leading portion and the trailing portion of an article include the steps of providing a horizontal flight path upon which the bottommost portion of said dimensioned article is supported, providing a horizontally extending top seal bar and providing a horizontally extending bottom seal bar, said bottom seal bar being actuable to move vertically from a first position below said article flight path to a point at or near the horizontal midline of said article, said top and bottom seal bars being vertically movable towards and away from one another. 14. The method of claim 13 wherein said seal bar providing steps include the step of providing a rocker arm which is pivotable about an axis, said rocker arm having a first end and a second end, the first end of said rocker arm being connected to said bottom seal bar and the second end of said rocker arm being connected to said top seal bar whereby actuation of the bottom seal bar effects a rotation of the rocker arm and a movement of the top seal bar toward said bottom seal bar. 15. The method of claim 14 wherein said rocker arm providing step includes the step of variably adjusting the rocker arm axis relative to the vertical whereby the top seal bar and said bottom seal bar are functionally adapted to meet at the rocker arm axis and at the horizontal midline of articles of various dimensions. 16. An apparatus for wrapping a dimensioned article in heat sealable thermoplastic film which comprises a conveyor for advancing said article in a continuous longitudinal direction and at a continuous speed, a supply of heat sealable thermoplastic film, said film supply consisting of two longitudinally extending adjacent layers of film folded over one atop the other and forming a space therebetween, means for introducing a dimensioned article within said film space, said film supply further including two film edges which form a longitudinally extending opening to one side of said article, said dimensioned article having a horizontal midline, a leading portion and a trailing portion, means for grasping the edges of said film at or near the horizontal midline of said article, a first heat source, means for advancing said film edges in close proximity to said first heat source, means for heat induced fusing of said film edges along said longitudinally extending film opening, means for forming a first weld along said fused film edges, means for forming a second weld along a waste portion of the fused edges, means for diverging said second weld away from said first heat source, a second heat source, means for advancing said article towards said second heat source, means for heat induced fusing of the film layers at or near the horizontal midline of the leading portion of the article by contacting or nearly contacting the film layers with the second heat source, means for further advancing said article away from said second heat source, and means for heat induced fusing of the film layers at or near the horizontal midline of the trailing portion of the article by contacting or nearly contacting the film layers with the second heat source, whereby the article is wrapped within a layer of thermoplastic film. 17. The apparatus of claim 16 wherein said film edge grasping means includes two sets of cooperating pulleys, each pulley set including a drive pulley, a tail pulley and a plurality of idler pulleys linearly disposed between said drive pulley and said tail pulley. 18. The apparatus of claim 17 wherein said film edge grasping means includes a first belt pathway and a second belt pathway defined about the perimeter of each pulley of each of said pulley sets, said first and second belt pathways each being functionally adapted to form a guide means for a belt held therewithin. 19. The apparatus of claim 18 wherein said film edge grasping means and said film edge advancing means includes a pair of belts for each pulley set, each belt having an outer face with a pattern running longitudinally with said belt and having a plurality of longitudinally extending ribs and a plurality of alternating longitudinally extending grooves formed therein, one belt being retainably rotatable within the first belt pathway of each of said pulley sets and the other belt being retainably rotatable within the second belt pathway of each of said pulley sets. 20. The apparatus of claim 19 wherein each of the idler pulleys of each pulley set is electrically isolated. 21. The apparatus of claim 20 wherein the tail pulley of each pulley set includes a torsional spring tensioning means whereby a belt retained by each pulley set may be releaseably removed from said pulley set. 22. The apparatus of claim 21 wherein each pulley set is offset from the other whereby the ribs and grooves of cooperating belts mesh together to positively retain one or more layers of film therebetween. 23. The apparatus of claim 22 including air actuation means for vertically moving one pulley set towards or away from the other pulley set. 24. The apparatus of claim 23 wherein said first heat source comprises a hot wire assembly, said hot wire assembly including a first wire retention clamp, a second wire retention clamp and a hot wire extending between said first and second retention clamps, said wire having a first wire end and a second wire end, said hot wire assembly being configured to locate the hot wire between the belts of each pulley set and each of said wire retention clamps being functionally adapted to retain one wire end therewithin and to provide for the quick release of the wire end retained. 25. The apparatus of claim 24 wherein said hot wire is diverged downwardly from said first wire retention clamp at an acute angle relative to the horizontal and said wire is further diverged horizontally away from said first belt pathway.
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