A flexible flywheel includes: a shaft fastening portion fixed to an end portion of an engine crankshaft; an annular inertia ring provided around the shaft fastening portion; a plurality of elastic spoke portions that extend in the radial direction between the shaft fastening portion and the inertia ring and connect the shaft fastening portion and the inertia ring to each other, and that absorb vibration acting on the crankshaft by undergoing deflection; and weight portions provided between adjacent elastic spoke portions, side edge-side boundary ends, to which boundaries with the weight portions are connected, are provided on both sides edges of the elastic spoke portion, respectively, when the elastic spoke portions are vibrated, stress concentrates on the side edge-side boundary ends.

An assembly for damping the movement of a vibrating body includes an energy dissipating material, a vessel, and a seal. The energy dissipating material may include one or more types of loose particles. The loose particles may include similar and/or dissimilar materials or a mixture thereof. The loose particles may at least partially fill the vessel. The vessel may be configured to conform to requirements of an environment of the vibrating body and to retain and/or store the loose particles. The seal may include a molded material, a plate, and/or a flange. In an embodiment, the plate may be at least partially encompassed within the seal, and the seal, plate, and/or flange may be configured to engage the vessel and/or to retain the loose particles within the vessel.

A spring element that includes one or more loop portions. Each loop portion provides vibration isolation characteristics for the spring element. One or more fastening portions of the spring element enable the fastening or connecting of the spring element to one or more structures. A ratio of a longitudinal measure of each loop portion to a transverse measure of the spring element is between 7.5 and 500. A pair of loop portions may be integrally joined together at a middle section to form a continuous loop. A pair of fastening portions may be integrally joined to opposing sides of the middle section, respectively. One of the fastening portions may be connected to a first structure and the other one of the fastening portions may be connected to a second structure.

A wave spring is disclosed herein that creates hysteresis between two components. The wave spring includes an annular body having a wave-shaped profile, and a plurality of axially extending fingers extending from the annular body. The wave spring is dimensioned to be received in a space between at least two axially opposed hub components.

A centrifugal pendulum for a motor vehicle drivetrain includes a carrier, a pendulum mass, mounting for pivoting relative to the carrier, and a roller body. The carrier has a carrier roller track and the pendulum mass has a pendulum mass roller track. The roller body has a first rolling region arranged in the carrier roller track and a second rolling region arranged in the pendulum mass roller track. The carrier roller track is formed at least partially by an axially formed sheet-metal portion having a free edge, and the free edge faces away from the pendulum mass.

The present invention relates to a spring package (2) for use in a clutch and/or in a transmission, comprising a first supporting ring (4), a second supporting ring (6) which is arranged spaced apart (parallel) from the first supporting ring (4) in the axial direction, and a plurality of coil springs (8) arranged between the first supporting ring (4) and the second supporting ring (6) in distributed manner across the circumference thereof, wherein at least one of the supporting rings (4, 6) is formed from a sheet-metal strip (22) which is stamped and then bent into a ring shape and the ends of which are permanently connected to each other. Furthermore, the invention also relates to a method for producing a supporting ring (4, 6) for a spring package (2) according to the invention, comprising the following steps: stamping a sheet-metal strip (22) of predetermined length (l) and predetermined width (b), introducing spring holders (10; 68), introducing impressions on a longitudinal edge (26) of the sheet-metal strip (22) while forming a ring shape; and connecting the two axial ends.

A shock absorber pressure tube defining a working chamber is provided. A piston assembly coupled to a piston rod is slidably disposed in the pressure tube and divides the working chamber into upper and lower working chambers. A reserve tube surrounds the pressure tube to define a reserve chamber. A base valve assembly, position at one end of the pressure tube, controls fluid flow between the lower working chamber and the reserve chamber. The reserve tube comprises first and second open shells that are joined together at longitudinal seams to create a substantially cylindrical shape. The first and second open shells may be made from patchwork blanks, tailor welded blanks, tailor rolled blanks, or tailor heat treated blanks to give different portions of the first and second open shells different thicknesses, strengths, properties, or characteristics.

A spring element that includes one or more loop portions. Each loop portion provides vibration isolation characteristics for the spring element. One or more fastening portions of the spring element enable the fastening or connecting of the spring element to one or more structures. A ratio of a longitudinal measure of each loop portion to a transverse measure of the spring element is between 7.5 and 500. A pair of loop portions may be integrally joined together at a middle section to form a continuous loop. A pair of fastening portions may be integrally joined to opposing sides of the middle section, respectively. One of the fastening portions may be connected to a first structure and the other one of the fastening portions may be connected to a second structure.

A linear compressor includes: a shell; a cylinder provided inside the shell; a frame coupled to an outer side of the cylinder; a piston configured to reciprocate in an axial direction; a motor that supplies power to the piston; and a spring mechanism coupled to the piston. The spring mechanism includes: a support connected to the piston and including a spring support unit having one or more insertion holes; a first coupling protrusion that extends from the rear side of the spring support unit along the edge of the insertion hole; a support cap inserted into the insertion hole and including a second coupling protrusion protruding from the front side of the spring support unit; a first resonant spring inserted into the outer circumferential surface of the second coupling protrusion; and a second resonant spring inserted into the outer circumferential surface of the first coupling protrusion.

A wave spring is disclosed herein that creates hysteresis between two components. The wave spring includes an annular body having a wave-shaped profile, and a plurality of axially extending fingers extending from the annular body. The wave spring is dimensioned to be received in a space between at least two axially opposed hub components.