公开(公告)号：US11434973B2

公开(公告)日：2022-09-06

申请号：US17601945

申请日：2020-04-10

申请人： Ohio University

发明人： Kenneth K. Walsh

IPC分类号： F16F15/18 ,  F16F15/06 ,  E04B1/98 ,  E04H9/02

摘要： Described and shown are passive variable stiffness devices, which are of compact design and configured to produce a restoring force that varies optimally with the isolator displacement when subjected to vibration-inducing loading.

公开(公告)号：US10591017B2

公开(公告)日：2020-03-17

申请号：US15463636

申请日：2017-03-20

申请人： Ohio University

发明人： Kenneth K. Walsh

IPC分类号： F16F9/512 ,  F16F9/32 ,  F16F15/02 ,  E04B1/98 ,  E04H9/02

摘要： A resetting semi-passive stiffness damper (RSPSD) triggering assembly and a RSPSD and method of use for damping movement of an object. Exemplary embodiments of a RSPSD triggering assembly include, for example, a rotatable disc and a spring-loaded lever arranged between the disc and a slotted channel. A sensor is provided and communicates with a bypass valve on the cylinder. A change in the direction of movement of the disc causes reciprocation of the lever in the channel, which causes the sensor to send open and close signals to the bypass valve. In some embodiments, a single disc may be replaced with two interacting discs. A RSPSD equipped with such a triggering assembly is usable to damp movement of an object of interest.

公开(公告)号：US10760643B2

公开(公告)日：2020-09-01

申请号：US16154037

申请日：2018-10-08

申请人： OHIO UNIVERSITY

发明人： Kenneth K. Walsh

IPC分类号： F16F15/06

摘要： A passive variable negative stiffness device (passive VNSD) configured to facilitate a transition to zero stiffness by using elastic devices (e.g., springs) combined with translating and rotating components. An exemplary embodiment of a passive VNSD may comprise at least one pretensioned and/or precompressed elastic device to produce the desired force-displacement profiles. For instance, an exemplary embodiment of a passive VNSD may be adapted to produce force-displacement profiles that transition from zero stiffness, to negative stiffness, and then to positive stiffness (ZNP) and from zero stiffness, to negative stiffness, and then back to zero stiffness (ZNZ).

公开(公告)号：US09598862B2

公开(公告)日：2017-03-21

申请号：US14106185

申请日：2013-12-13

申请人： Ohio University

发明人： Kenneth K. Walsh

IPC分类号： F16D57/00 ,  E04B1/98 ,  F16F9/512 ,  F16F9/32 ,  F16F15/02 ,  F16D7/10 ,  E04H9/02

CPC分类号： F16F9/5126 ,  E04B1/98 ,  E04B1/985 ,  E04H9/02 ,  E04H2009/026 ,  F16F9/3214 ,  F16F9/3292 ,  F16F9/512 ,  F16F15/02 ,  F16F2228/001 ,  F16F2228/066 ,  F16F2228/10

摘要： A resetting semi-passive stiffness damper (RSPSD) for use in damping movement. Embodiments of such a RSPSD include, for example, a pistoned cylinder connected to a grooved rack, and a spring-loaded lever arranged between the rack and a slotted channel above the rack. One end of the lever is allowed to move pivotably and vertically within the channel as the other end moves with the rack. A sensor is provided and communicates with a bypass valve on the cylinder. A change in the direction of movement of the rack forces the lever further into the slotted channel where it eventually triggers the sensor, which then sends a signal to open the bypass valve. As the rack continues to move, the lever eventually reverses direction, and is forced back down the slotted channel by a return spring. Upon leaving the sensing range of the sensor, the valve is signaled to close.

公开(公告)号：US20190040931A1

公开(公告)日：2019-02-07

申请号：US16154037

申请日：2018-10-08

申请人： OHIO UNIVERSITY

发明人： Kenneth K. Walsh

IPC分类号： F16F15/06

CPC分类号： F16F15/06 ,  F16F2228/063 ,  F16F2228/08

摘要： A passive variable negative stiffness device (passive VNSD) configured to facilitate a transition to zero stiffness by using elastic devices (e.g., springs) combined with translating and rotating components. An exemplary embodiment of a passive VNSD may comprise at least one pretensioned and/or precompressed elastic device to produce the desired force-displacement profiles. For instance, an exemplary embodiment of a passive VNSD may be adapted to produce force-displacement profiles that transition from zero stiffness, to negative stiffness, and then to positive stiffness (ZNP) and from zero stiffness, to negative stiffness, and then back to zero stiffness (ZNZ).

公开(公告)号：US20170191543A1

公开(公告)日：2017-07-06

申请号：US15463636

申请日：2017-03-20

申请人： Ohio University

发明人： Kenneth K. Walsh

IPC分类号： F16F9/512 ,  E04B1/98 ,  E04H9/02 ,  F16F9/32

CPC分类号： F16F9/5126 ,  E04B1/98 ,  E04B1/985 ,  E04H9/02 ,  E04H2009/026 ,  F16F9/3214 ,  F16F9/3292 ,  F16F9/512 ,  F16F15/02 ,  F16F2228/001 ,  F16F2228/066 ,  F16F2228/10

摘要： A resetting semi-passive stiffness damper (RSPSD) triggering assembly and a RSPSD and method of use for damping movement of an object. Exemplary embodiments of a RSPSD triggering assembly include, for example, a rotatable disc and a spring-loaded lever arranged between the disc and a slotted channel. A sensor is provided and communicates with a bypass valve on the cylinder. A change in the direction of movement of the disc causes reciprocation of the lever in the channel, which causes the sensor to send open and close signals to the bypass valve. In some embodiments, a single disc may be replaced with two interacting discs. A RSPSD equipped with such a triggering assembly is usable to damp movement of an object of interest.

公开(公告)号：US20140196995A1

公开(公告)日：2014-07-17

申请号：US14106185

申请日：2013-12-13

申请人： Ohio University

发明人： Kenneth K. Walsh

IPC分类号： E04B1/98 ,  F16F9/32 ,  F16F9/512

CPC分类号： F16F9/5126 ,  E04B1/98 ,  E04B1/985 ,  E04H9/02 ,  E04H2009/026 ,  F16F9/3214 ,  F16F9/3292 ,  F16F9/512 ,  F16F15/02 ,  F16F2228/001 ,  F16F2228/066 ,  F16F2228/10

摘要： A resetting semi-passive stiffness damper (RSPSD) for use in damping movement. Embodiments of such a RSPSD include, for example, a pistoned cylinder connected to a grooved rack, and a spring-loaded lever arranged between the rack and a slotted channel above the rack. One end of the lever is allowed to move pivotably and vertically within the channel as the other end moves with the rack. A sensor is provided and communicates with a bypass valve on the cylinder. A change in the direction of movement of the rack forces the lever further into the slotted channel where it eventually triggers the sensor, which then sends a signal to open the bypass valve. As the rack continues to move, the lever eventually reverses direction, and is forced back down the slotted channel by a return spring. Upon leaving the sensing range of the sensor, the valve is signaled to close.

摘要翻译： 用于阻尼运动的复位半被动刚度阻尼器（RSPSD）。 这种RSPSD的实施例包括例如连接到带槽齿条的活塞气缸和设置在齿条与齿条上方的开槽通道之间的弹簧加载杆。 当另一端与支架一起移动时，杠杆的一端允许在通道内可枢转地和垂直地移动。 提供传感器并与气缸上的旁通阀连通。 齿条移动方向的变化迫使杆进一步进入开槽通道，最终触发传感器，然后传感器发出信号以打开旁通阀。 当机架继续移动时，杠杆最终反转方向，并通过复位弹簧被迫向下穿过开槽通道。 当离开传感器的感测范围时，阀门发出信号关闭。