Methods and apparatus for lubricating suspension seals by pumping fluid to the seals using a compression or rebound action of a suspension component.

An object of the present invention is to provide a vibration damping device including a bearing member capable of achieving simplification of configuration in the vibration damping device, reducing frictional force during operation, and having an excellent wear resistance. A vibration damping device of the present invention includes a bearing structure, in which a metal bush (bearing member) has a resin layer on a side defined as a friction sliding surface of a base member, the resin layer includes polytetrafluoroethylene and a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin, and the metal bush is lubricated by a magneto-rheological fluid composition.

A damper device includes: an input shaft member to which a driving force from a crankshaft of an internal combustion engine is input, the input shaft member including a flange portion of the crankshaft; an output shaft member capable of outputting the driving force transmitted from the input shaft member; an input side cam and an output side cam respectively connected to the input shaft member and the output shaft member; rolling members pivotable on the input side cam; and an urging member urging the output side cam so as to cause it to abut the rolling members, wherein the input side cam has receiving portions recessed so as to receive the rolling members, and supply passages extending through the flange portion and the input side cam has: inlets communicated with an oil sump space; and outlets formed at the receiving portion of the input side cam.

A mass damper system has a damper mass carrier and a damper mass movably received at the damper mass carrier a lubricant supply, a lubricant collector, and a lubricant distributor radially offset to one another with the damper mass carrier, the lubricant supply arranged at a shorter radial distance from a central axis than the lubricant collector, and the lubricant distributor arranged at a greater radial distance from the central axis than the lubricant collector to collect lubricant supplied by the lubricant supply and to guide the lubricant through the lubricant distributor to the damper mass. A stop arrangement limits a deflection path of the damper mass relative to the damper mass carrier, and the lubricant distributor has a lubricant feed that leads from the lubricant collector to a constructional unit requiring intensive lubrication.

Methods and systems are provided for balancer shaft assemblies featuring bearing caps. In one example, a system may include a bearing cap connected to a housing surrounding a balancer shaft. The bearing cap may have faces which contact components of the balancer shaft. This contact may prevent movement of the balancer shaft in a particular direction.

A vibration absorber is provided which is mounted in an annular space housing a spring of a damper, wherein accompanying rotational fluctuation of a drive source, when a first plate connected to the drive source and a second plate connected to a transmission rotate relative to each other while elastically deforming a spring, an arm part extending radially outward from a driven plate swings in the interior of an annular space, and grease packed in the annular space is compressed by the arm part and pushed inward in the radial direction, but since this grease is guided in the peripheral direction by a flow-aligning projection provided on either one of the driven plate and the seal plate and projecting toward the other, and is prevented from being concentrated in part of a seal member provided on the inner peripheral part of the seal plate and sealing the annular space.

The present invention provides a pulley structure (10) provided with: a tubular outer rotating body (2) having a belt (B) looped thereon; an inner rotating body (3) which is disposed radially inside the outer rotating body (2) and which is rotatable relative to the outer rotating body (2); and a torsional coil spring (4) which is arranged in a spring accommodating space (8) formed between the outer rotating body (2) and the inner rotating body (3). At least in a state in which the pulley structure (10) has not been operated even once, a grease (200) containing an antirust agent is applied to an opposing surface (34) of the inner rotating body 3 opposing an inner peripheral surface (42) of the torsional coil spring (4).

A vibration damping device of an inverted structure includes a cylinder, a rod capable of protruding and retracting in the cylinder, an outer cylinder coupled to the rod and inserted over the outer periphery of the cylinder, and a bush slidably inserted between the outer cylinder and the cylinder. A gap between the outer cylinder and the cylinder is filled with lubricating oil. The bush contains polytetrafluoroethylene and perfluoro alkoxy alkane. The lubricating oil contains an organic molybdenum additive.

A mechanism for mounting in ground, foundation or structure, to provide road, port, railway or similar passive safety for protection of the respective vehicles or structures, having at least one rigid element arranged as a side of a triangle whose basal side rests on the ground, with its first end at the apex of the triangle, its midpoint pivoted to an intermediate element, and with its second end pivoted with respect to at least one friction element; a friction dissipation member; at least one elastic element arranged with its axis in the direction of the degree of freedom; the at least one friction element and at least one rigid element are attached by a coupling element allowing sliding of each friction element perpendicular to the impact load when it compresses the elastic element.

To provide a lubricant composition for shock absorbers, a friction adjusting additive for a lubricant for shock absorbers, and a lubricant additive, each capable of satisfying both operational stability and ride comfort and improving the ride comfort further. The lubricant composition for shock absorbers contains a base oil and a friction adjusting agent and the friction adjusting agent contains a first zinc dithiophosphate represented by the following formula 1: ##STR00001##
[in the formula 1, R.sup.11 to R.sup.14 are alkyl groups in which one or more and three or less is/are a primary alkyl group and the other(s) is/are a secondary alkyl group].