公开(公告)号：US10156159B1

公开(公告)日：2018-12-18

申请号：US15682694

申请日：2017-08-22

申请人： General Electric Company

发明人： Ravindra Shankar Ganiger ,  Satish Kumar Yadav ,  Shuvajyoti Ghosh

IPC分类号： F16C27/04 ,  F01D25/16 ,  F16F15/023 ,  F01D25/06 ,  F01D5/10

摘要： Squeeze film damping systems and methods therefore are provided that include features for optimizing the damping response to vibrational loads experienced by a rotary component of a gas turbine engine. In one exemplary aspect, a damping system actively controls a dynamic sleeve to adjust the damping response. In particular, the dynamic sleeve is disposed within a chamber defined by a damper housing. The damping system controls the damper gap by translating the dynamic sleeve. When the dynamic sleeve is translated, a variable damper gap is varied, allowing for fluid to squeeze into or out of the damper gap, thereby adjusting the damping response to the vibration of the rotary component.

公开(公告)号：US10144482B2

公开(公告)日：2018-12-04

申请号：US15415375

申请日：2017-01-25

申请人： Showa Corporation

发明人： Kojiro Yoshida

IPC分类号： B62K25/08 ,  F16F13/00 ,  F16F15/023 ,  F16F15/067 ,  F16F9/02 ,  F16F9/06 ,  B62K25/04

摘要： A front fork leg includes an inner chamber that absorbs by a gas spring a shock caused on a vehicle; an auxiliary gas spring chamber communicating with the inner chamber; an auxiliary piston provided in the auxiliary gas spring chamber; and a gas spring chamber side gas chamber sectioned by the auxiliary piston and communicating with the inner chamber, and the auxiliary piston moves to increase a volume of the gas spring chamber side gas chamber, as pressure inside the inner chamber increases.

公开(公告)号：US20180291979A1

公开(公告)日：2018-10-11

申请号：US15481040

申请日：2017-04-06

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Xiaofeng Mao ,  Hai Xu ,  Jeffrey N. Heaton ,  Scott C. Mrdeza

IPC分类号： F16F15/00 ,  F16F15/18 ,  F16F15/173 ,  F16F15/023 ,  F16F15/027

CPC分类号： F16F15/002 ,  F16F15/0235 ,  F16F15/0275 ,  F16F15/173 ,  F16F15/18 ,  F16F2222/06 ,  F16F2222/08 ,  F16F2222/12 ,  F16F2224/043 ,  F16F2224/045 ,  F16F2228/04 ,  F16F2230/183 ,  F16F2232/02 ,  F16F2236/08

摘要： An active damping system for a driveline includes a prop shaft configured to transmit engine power from an engine to a load, a sealed damper housing, and an active damping fluid contained within the sealed damper housing. A viscosity of the active damping fluid is changeable based on a torsional vibration of the prop shaft. The active damping system further includes a piston fixed to a side of the prop shaft and in communication with the active damping fluid. The piston is configured to rotate about an axis of the prop shaft. The system further includes a viscosity changing unit in communication with the active damping fluid, and a controller operatively connected to the viscosity changing unit. The controller is configured to cause the viscosity changing unit to change a viscosity of the active damping fluid. The viscosity of the active damping fluid changes the torsional vibration.

公开(公告)号：US10066505B2

公开(公告)日：2018-09-04

申请号：US15131097

申请日：2016-04-18

申请人： General Electric Company

发明人： Bugra Han Ertas ,  Joshua Tyler Mook ,  Jason Joseph Bellardi

IPC分类号： F16C17/02 ,  F16C27/02 ,  F01D25/16 ,  F16C32/06 ,  F16F9/10 ,  F16F15/023 ,  F16C17/03 ,  F16C25/04

摘要： The present disclosure is directed to a gas-lubricated bearing assembly for a gas turbine engine and method of damping same. The bearing assembly includes a bearing pad for supporting a rotary component and a bearing housing attached to or formed integrally with the bearing pad. The bearing housing includes a first fluid damper cavity, a second fluid damper cavity in restrictive flow communication with the first fluid damper cavity via a restrictive channel configured as a clearance gap, and a damper fluid configured within the first and second fluid damper cavities. More specifically, the damper fluid of the present disclosure is configured to withstand the high temperature environment of the engine. Thus, the bearing housing is configured to transfer the damper fluid from the first fluid damper cavity to the second fluid damper cavity via the restrictive channel in response to a force acting on the bearing pad.

公开(公告)号：US20180245658A1

公开(公告)日：2018-08-30

申请号：US15559021

申请日：2016-03-15

申请人： Holmes Solutions Limited Partnership

发明人： Andrew Karl DIEHL ,  John McCALLISTER ,  Mark THOMSON ,  Murray AITKEN ,  Stuart CLARK

IPC分类号： F16F9/20 ,  F16F9/19 ,  F16F15/023

CPC分类号： F16F9/20 ,  E04B1/985 ,  E04H9/02 ,  F16F9/182 ,  F16F9/19 ,  F16F9/3228 ,  F16F15/023 ,  F16F2230/0005 ,  F16F2230/30

摘要： Energy transfer apparatus such as a viscous damper or hydraulic cylinder apparatus are described along with their use, the apparatus generating velocity dependent damping force between two spatially separate points. The apparatus may comprise a system with a piston coupled to a rod shaft, the piston and rod shaft moving in a fitted, or sealed cylinder with end caps and fluid sealing elements at either end of the cylinder, the system containing fluid in at least one cavity located between the piston and cylinder and an accumulator fluidly connected to the at least one cavity. The rod shaft and piston move relative to the cylinder in the event of an imposed dynamic force and the accumulator counteracts over or under pressure in the at least one cavity.

公开(公告)号：US20180223939A1

公开(公告)日：2018-08-09

申请号：US15945043

申请日：2018-04-04

申请人： GAUDET MACHINE WORKS INC.

发明人： Martin GAUDET

IPC分类号： F16F9/10 ,  F16F15/023 ,  F16F13/06 ,  F15B15/22 ,  A42B3/12 ,  B25D1/12 ,  A47B91/04 ,  F16D3/12

CPC分类号： F16F9/103 ,  A42B3/121 ,  A47B91/04 ,  B25D1/12 ,  F15B15/22 ,  F15B15/226 ,  F16D3/12 ,  F16F13/06 ,  F16F15/0237

摘要： A force limiting device comprises a housing defining an axially extending chamber containing a working fluid. A force transmitting member may be mounted for linear reciprocable movement inside the chamber under the action of external loads. An axial array of plates is floatingly disposed in the chamber between the force transmitting member and an end wall of the chamber. At rest, each plate is spaced from an adjacent plate by a gap occupied by the working fluid. When the force transmitting member is displaced towards the array of plates, the fluid in the chamber causes the plates to be successively pushed against each other, thereby causing some of the fluid to be squeezed out from between the plates.

公开(公告)号：US09992890B1

公开(公告)日：2018-06-05

申请号：US15372275

申请日：2016-12-07

申请人： Raytheon Company

发明人： Florian P. Lukowski, Jr. ,  Paul M. Shaheen ,  Charles Chu

IPC分类号： H05K7/20 ,  F16F7/104 ,  H05K5/02 ,  F16F9/32 ,  F16F7/10 ,  F16F9/10 ,  F16F15/023

CPC分类号： H05K5/0256 ,  F16F7/1017 ,  F16F7/104 ,  F16F9/103 ,  F16F9/3207 ,  F16F15/023 ,  F16F2222/08 ,  F16F2222/12 ,  F16F2230/06 ,  F16F2234/08 ,  F16F2238/04 ,  H01L23/473 ,  H05K7/20154 ,  H05K7/20218 ,  H05K7/20263 ,  H05K7/2039

摘要： A system or structure subject to external mechanical dynamic loading excitations propagated within the system or structure comprising a fluid filled structure and a fluid volume operable to facilitate fluid flow about at least part of the structure. Excitations within the structure can be propagated throughout. The system can further comprise a tuned mass damper (TMD) located within the fluid volume. The TMD can leverage the viscous properties of the fluid to attenuate the excitations within the structure. The TMD can comprise a mass and a spring operably connected to the mass. The TMD can further comprise a fluid resistance facilitating fluid flow about the mass and the spring for damping and a secondary tuning feature operably connected to at least one of the mass and the spring and the supporting fluid-filled structure.

公开(公告)号：US09977349B2

公开(公告)日：2018-05-22

申请号：US15109427

申请日：2014-12-18

申请人： ASML NETHERLANDS B.V.

发明人： Hans Butler ,  Cornelius Adrianus Lambertus De Hoon ,  Ingmar August Kerp ,  Pieter Johannes Gertrudis Meijers ,  Jeroen Pieter Starreveld ,  Derk Ten Hoopen ,  Martinus Van Duijnhoven ,  Edward Hage ,  Evert Hendrik Jan Draaijer ,  Wesley Ooms

IPC分类号： G03F7/20 ,  F16F15/023

CPC分类号： G03F7/70866 ,  F16F15/0232 ,  G03F7/70733 ,  G03F7/70833 ,  G03F7/709

摘要： A support device configured to support a first part relative to a second part, minimizing the transfer of vibration between the two parts, includes a supporting system configured to use gas under pressure to provide a support force between the first and second parts; a gas chamber connected to the supporting system and configured to contain the gas under pressure and provide the gas under pressure to the supporting system; and a section of acoustic damping material, arranged at a location within the gas chamber so as to separate a first gas containing region and a second gas containing region within the gas chamber, wherein the section of acoustic damping material has a first side and a second side, wherein the first gas containing region is on the first side and the second gas containing region is on the second side.

公开(公告)号：US09945443B2

公开(公告)日：2018-04-17

申请号：US14679645

申请日：2015-04-06

申请人： AGCO Netherlands B.V.

发明人： Joris Jan Hiddema

IPC分类号： A01M7/00 ,  F16F15/023

CPC分类号： F16F15/023 ,  A01M7/005 ,  A01M7/0053 ,  A01M7/0057 ,  A01M7/0075

摘要： A boom mounting assembly for attachment to an agricultural application machine is provided. The assembly includes a boom support frame which is suspended from a primary frame mounted to a chassis. The boom support frame comprises a transverse beam for supporting an intermediate section of a fluid application boom. The suspension mechanism allows both yaw and pitch of boom support frame relative to the primary frame resulting from fore and aft forces on the boom. Dampers are each connected between the primary frame and the boom support frame at a position spaced from the transverse center of the assembly. Damping of pitch and asymmetrical yaw movement of the transverse beam away from a neutral position is controlled by the first and second dampers.

公开(公告)号：US09926975B2

公开(公告)日：2018-03-27

申请号：US15077588

申请日：2016-03-22

申请人： United Technologies Corporation

发明人： Adam G. Smedresman ,  Jacek G. Stec

IPC分类号： F16C27/04 ,  F16F15/02 ,  F01D25/16 ,  F16F15/023

CPC分类号： F16C27/045 ,  F01D25/164 ,  F05D2220/32 ,  F05D2240/50 ,  F05D2260/30 ,  F05D2260/38 ,  F16C2360/23 ,  F16C2360/24 ,  F16F15/022 ,  F16F15/0237

摘要： An assembly includes a bearing having an annular shape, a bearing support radially outward from the bearing, a squeeze film damper having a first end adjacent the bearing and a second end adjacent the bearing support with the second end forming a squeeze film damping surface, and a first spring between the bearing and the bearing support with the first spring configured to resist a movement of the bearing to center a shaft radially inward from the bearing.