Beijingwest Industries Co., Ltd.

Eric Louis Schumann

David John Barta

Brent Fourman

Stephen Lewis Setty

Steven Pyle

Timothy Michael Schlangen

Michael Gerard Zimmerman

Alireza Farjoud

Shigekata Yoshida, Ii

Chad Michael

Michael Zimmerman

Shigekata Yoshida

Steven E Pyle

Brent Wade Fourman

A gas cup for a damper assembly comprises a body including an upper surface, a lower surface, an exterior surface and an interior surface. The body defines an aperture extending through the upper surface and the lower surface. A decoupler is located in the aperture and secured to the body. A bridging member is located between the decoupler and the body and coupled to the decoupler and the body. The decoupler and the bridging member is made from materials having different elasticity to allow the decoupler to move in the aperture in response to a volumetric change in the damper assembly and to provide variable tuning of the damper assembly. A damper assembly including the gas cup is also disclosed herein.

Gas cup for a damper assembly and a damper assembly

An assembly for multi-stage damping comprising a damping unitincluding a decouplerdefining an annular zonesurrounding a circular zone. The annular zoneextends inwardly from an outer ringto define a ring shape for flexing with the circular zonein a first modeto maximize the potential volume of displacement between a first chamberand a second chamber. Additionally, the assembly provides for flexing the annular zoneindependently of the circular zonein a second modeto decrease the potential volume of displacement of the decouplerbetween the first chamberand the second chamber. The decouplerincludes a plurality of ringsextending axially from a first surfaceand a second surfacefor defining an axial travel limit for the annular zone

Multi-stage damping assembly

A mount apparatus () for supporting a vibration source on a base is provided. The mount apparatus () includes a moving member () that is partially disposed in a pumping chamber () for moving within the pumping chamber () along a first axis (A) to create a volume change in the pumping chamber () to maintain the volume of the pumping chamber () to prevent a pressure increase in the pumping chamber () during the deformation of a flexible body () in response to an external excitation to effectively cancel the external excitation. The moving member () includes a moveable wall () of a flexible material, having a generally hour glass-shape in steady state, and extending between moving member upper and lower ends (). The moveable wall () flexes radially outwardly and inwardly relative to the first axis (A) in response to relative axial movement between the moving member upper and lower ends (), to amplify the volume change in the pumping chamber ().

Mount apparatus

A hydraulic mount apparatus () for supporting a vibration source is disclosed. The mount apparatus () includes a housing () that defines a housing chamber () separated by a partition assembly () into a pumping chamber () and a receiving chamber (), each containing a magnetorheological fluid (). A flexible body () is partially disposed in the pumping chamber () for deforming elastically in response to vibrations caused by an external excitation. A fluid passage () extends between the pumping chamber () and the receiving chamber () for passing the fluid therebetween during low frequency vibrations. A piezostack actuator () partially extends into the pumping chamber () for moving within the pumping chamber () for varying the volume of the pumping chamber () to prevent a pressure increase in the pressure chamber to substantially cancel relatively high frequency vibrations.

Hydraulic mount apparatus for supporting vibration source

A tie bar assembly includes front and rear units each including inner inserts interconnected with outer inserts with webs of elastomeric material. A pole sub-assembly is disposed between the units. The pole sub-assembly and the units define front and rear fluid chambers containing a magneto-rheological fluid. Fluid orifices are disposed through the pole sub-assembly for flow of the magneto-rheological fluid between fluid chambers. An electromagnet coil generates an electromagnetic field to affect viscosity of the magneto-rheological fluid. A connecting rod connects inner inserts and is slidably disposed through the pole sub-assembly for causing movement of the magneto-rheological fluid between fluid chambers. A displacement sensor detects movement to generate a signal to the electromagnet coil. Front and rear travel cushions are each disposed on the inner inserts for limiting the movement of the inner inserts toward the pole sub-assembly.

Double pumper magneto-rheological hydraulic tie bar assembly

A magnetorheological fluid-based hydraulic mount apparatus () for supporting a vibration source on a base is disclosed. A main fluid passage () extends between pumping chamber () and receiving chamber () for passing the fluid therebetween. Electromagnet coil () variably generates a magnetic flux across the main fluid passage to variably change the damping stiffness of the mount. A rate dip track passage () extends between the pumping chamber () and receiving chamber () for oscillating the magnetorheological fluid () therethrough to decrease the dynamic stiffness of the mount apparatus () at predetermined frequencies. A controller () applies a current through the electromagnet coils () at the predetermined frequencies and frequencies relatively close to and above the redetermined frequencies for substantially preventing the magnetorheological fluid () from flowing through the main fluid passage () to force the magnetorheological fluid () to flow substantially only through the rate dip track passage () for preventing a sharp increase in the dynamic stiffness of the hydraulic mount apparatus () from occurring at these frequencies.

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Tipp City, OH, United States of America

Eric Louis Schumann