A torque fluctuation absorbing apparatus is capable of securely sealing a space housing an elastic member even on application of a centrifugal force or at the time of cooling. The torque fluctuation absorbing apparatus includes a center plate, a side plate(s) (side plate assembly) coaxial with the center plate and slidably relative to the center plate, and an elastic member housed within a space delimited by the side plate assembly to absorb torque fluctuations between the side plate assembly and the center plate. The apparatus also includes a cover member secured to the center plate and slidably pressure contacted with the side plate assembly to cover from outside a space housing the elastic member, and a suppressing section capable of suppressing the cover member from deforming under a pressure acting on the cover member when atmospheric pressure within the space housing the elastic member(s) becomes lower than outside atmospheric pressure.

A composite wrap is provided for damping vibration in an elongated quill shaft having a cylindrical body. The composite wrap includes interior layering for disposition about a cylindrical body, exterior layering configured to define an exterior composite wrap shape and sequential cured-in-place, vibration damping, fibrous epoxy layers. The sequential cured-in-place, vibration damping, fibrous epoxy layers are radially interposed between the interior and exterior layering to dampen vibrations of and/or to adjust a resonance frequency of the cylindrical body.

A spring carrier for receiving, retaining, and discharging of a coil spring in a manufacturing assembly process includes an elongate hollow body defining an inner cavity to receive the coil spring and an opening at a proximal first end of the hollow body for the insertion of the coil spring into the inner cavity and extraction of the coil spring from the inner cavity. A deflectable member is located proximate to the first proximal end and includes a retaining portion that retains the coil spring when the coil spring is located within the inner cavity. The deflectable member is movable between a first unbiased position, where the retaining portion extends into the inner cavity to retain the coil spring within the inner cavity, and a second biased position, where the retaining portion is disposed outwardly to allow the coil spring to be extracted from the inner cavity through the opening.

A vibration reducing unit and a transformer comprising same are disclosed. A vibration reducing unit according to one aspect of the present disclosure comprises: a sound absorbing member accommodated in a filling space formed in a housing and configured to absorb vibration or noise generated inside the housing; and a cover member coupled to the housing, wherein the filling space is formed between a plurality of reinforcing ribs provided in the housing and extending in one direction, and the cover member is coupled to the reinforcing ribs, the filling space, and the sound absorbing member accommodated in the filling space while covering same from the outside.

This disclosure relates generally to roll stabilization and related apparatuses.

Achieved is a rubber bushing for railroad trucks which has a novel structure and is capable of improving, for example, flame resistance to externally applied fire or the like without greatly degrading the basic properties demanded with respect to vibrational and load inputs. A rubber bushing 10 used for railroad car trucks comprises a shaft-like inner member 12 and an outer member 14, disposed on the outer peripheral side of the inner member 12 at a remove therefrom, which are linked by a rubber elastic body 16. A cover part 48 that covers an exposed end surface 44, from the outside thereof, where the rubber elastic body 16 is exposed to the outside between the axial ends of the inner member 12 and the outer member 14, is provided at an axial end of the rubber elastic body 16 as a separate member from the rubber elastic body 16.

A damping assembly, which is for a rewind starter of an engine, includes a cover housing, at least one damper, a cover mount and a retaining member. The cover housing is configured to connect to a housing of the engine, and includes a housing base defining an aperture, and a housing wall extending axially from the housing base. The housing wall at least partially surrounds the housing base. The at least one damper is connected to the housing base, and extends at least partially around the aperture. The cover mount is connected to the at least one damper, at least partially extends through the aperture, at least partially covers the aperture, and has a spindle configured to operatively connect to part of the rewind starter. The retaining member retains the cover housing, the at least one damper and the cover mount together.

A coil spring comprises a continuous wire forming a lowermost convolution, an uppermost convolution, and a plurality of helical intermediate convolutions. The coil spring is divided into an upper portion and a lower portion. The intermediate convolutions of the lower portion have a diameter greater than or equal to a lower minimum diameter, and the pitch between each of the convolutions of the lower portion is greater than or equal to a lower minimum pitch. The intermediate convolutions of the upper portion have a diameter greater than or equal to an upper minimum diameter, and the pitch between each of the convolutions of the upper portion is less than or equal to an upper maximum pitch. The upper minimum diameter is greater than, less than, or equal to the lower minimum diameter, and the upper maximum pitch is less than the lower minimum pitch to provide a non-linear and variable response.

A protective apparatus configured to protect electrode plates includes a support assembly configured to support a roll around which the electrode plates are wound, and a damping assembly. A top of the damping assembly is fixed to a bottom of the support assembly, and a bottom of the damping assembly is configured to be fixed to a base plate of a transport apparatus.