A spring element includes a body, at least one leaf spring and a stress relieving section. The body includes at least one mounting section. The leaf spring includes a first portion and a second portion. The first portion being secured to the body and at least a part thereof extends angularly with respect to a plane of the body. The leaf spring exerts an urging pressure on an element disposed between the body and a housing as the body is mounted on the housing. The stress relieving section is formed along at least one lateral side of the leaf spring and proximal to the first portion.

A spring element includes a body, at least one leaf spring and a stress relieving section. The body includes at least one mounting section. The leaf spring includes a first portion and a second portion. The first portion being secured to the body and at least a part thereof extends angularly with respect to a plane of the body. The leaf spring exerts an urging pressure on an element disposed between the body and a housing as the body is mounted on the housing. The stress relieving section is formed along at least one lateral side of the leaf spring and proximal to the first portion.

Provided is a rotary knob rotational structure being less susceptible to the influence of variation in the dimensions of a rotary knob and reducing backlash of the rotary knob while providing a suitable magnitude of rotational resistance to the rotary knob. The rotary knob rotational structure includes an annular sheet 22 interposed between a device body and the rotary knob 14, an attachment member 24 configured to attach a fixed portion 22a of the annular sheet 22 to the device body with the fixed portion 22a being interposed between the attachment member 24 and the device body, and a body-side protrusion 26 contacting the annular sheet 22 on the outside of the fixed portion 22a in the radial direction of the annular sheet 22 to warp the annular sheet 22 toward the rotary knob 14.

Provided is a rotary knob rotational structure being less susceptible to the influence of variation in the dimensions of a rotary knob and reducing backlash of the rotary knob while providing a suitable magnitude of rotational resistance to the rotary knob. The rotary knob rotational structure includes an annular sheet 22 interposed between a device body and the rotary knob 14, an attachment member 24 configured to attach a fixed portion 22a of the annular sheet 22 to the device body with the fixed portion 22a being interposed between the attachment member 24 and the device body, and a body-side protrusion 26 contacting the annular sheet 22 on the outside of the fixed portion 22a in the radial direction of the annular sheet 22 to warp the annular sheet 22 toward the rotary knob 14.

A damping stopper is interposed between two members axially displaced relative to each other and is provided with an elastic body which, when the interval between the two members decreases, is axially compressed by the two members and expands radially outward. In the elastic body, a second member suppressing the expansion is located in one axial region and attached to the outer periphery. When axially compressed by the two members, the elastic body expands while receiving resistance by the second member. The expanding elastic body contacts the side wall of one of the two members.

A damping stopper is interposed between two members axially displaced relative to each other and is provided with an elastic body which, when the interval between the two members decreases, is axially compressed by the two members and expands radially outward. In the elastic body, a second member suppressing the expansion is located in one axial region and attached to the outer periphery. When axially compressed by the two members, the elastic body expands while receiving resistance by the second member. The expanding elastic body contacts the side wall of one of the two members.

A torque transfer mechanism includes an input member to receive from a propulsion source, an input torque about an axis of rotation and an output member coupled to the input member to transfer the input torque to a downstream driveline component. The torque transfer mechanism also includes at least one clockspring to restrict relative rotation between the input member and the output member. The torque transfer further includes a mass plate coupled to the output member and configured to rotate about the axis of rotation. The torque transfer mechanism further includes a plurality of pendulum masses movably coupled to the mass plate wherein the clockspring is arranged to attenuate a first range of input torque vibration and a the plurality of pendulum masses are arranged to attenuate a second range of input torque vibration.

A torque transfer mechanism includes an input member to receive from a propulsion source, an input torque about an axis of rotation and an output member coupled to the input member to transfer the input torque to a downstream driveline component. The torque transfer mechanism also includes at least one clockspring to restrict relative rotation between the input member and the output member. The torque transfer further includes a mass plate coupled to the output member and configured to rotate about the axis of rotation. The torque transfer mechanism further includes a plurality of pendulum masses movably coupled to the mass plate wherein the clockspring is arranged to attenuate a first range of input torque vibration and a the plurality of pendulum masses are arranged to attenuate a second range of input torque vibration.

A rotary damper that is to be fastened to a first mass via a fastening part (10) comprises a damper housing (2) surrounding an electromagnetic damper motor (4) which is disposed along a central axis of the rotary damper, a hinged lever 14) connected to a second mass, and a gearing (14) for transmitting and/or converting a relative rotation between the masses to the damper motor (4) such that vibrations are dampened. The fastening part (10) is connected to a bearing part (38) via an elastomer bearing (44), the damper motor (4) being disposed on said bearing part (38), and the damper housing (2) is connected to the hinged lever (14), which is mounted so as to be able to rotate relative to the bearing part (38).

Described herein is a shock mitigation apparatus. The shock mitigation apparatus may be utilized in a marine environment, able to absorb shocks transmitted to a seat system from a structure to which the seat is affixed. The shock mitigation apparatus includes at least one leaf spring wherein the leaf spring is cantilevered at one end and pivoted at a distal end thereof, and wherein the pivoted end is free to articulate upon flexure of the leaf spring.