A vibration isolator includes a first conical disc spring member having a first end and a second end. A first-end spacer in contact with the first spring member first end, and a second-end spacer in contact with the first spring member second end. A second conical disc spring member has a first end and a second end. The second spring member first end is in contact with the first-end spacer. Another second-end spacer is in contact with the second spring member second end. A flexible housing of the isolator defines an interior. The housing is in contact with and extends between the second-end spacer and the other second-end spacer so that the first-end spacer and the first and second spring members are received in the housing interior. The housing includes a plurality of spaced-apart through holes formed therealong between the second-end spacer and the other second-end spacer.

A nozzle cap spacer for a hydrant nozzle cap includes a spacer body defining an outer edge and an inner edge, the inner edge defining an opening formed through a center of the spacer body; and a leak path notch formed in the spacer body, the leak path notch extending radially inward from the outer edge of the spacer body.

A compressible bushing includes an end having a first outer diameter. The compressible bushing also includes a bumper section having a second outer diameter greater than or equal to the first outer diameter and may include of a compressible material. The compressible bushing also includes an opening passing through the end and the bumper section, the opening having an inner diameter.

A nozzle cap spacer for a hydrant nozzle cap includes a substantially planar spacer body defining an outer body edge; and a resilient spacer spring arm extending from the outer body edge at a proximal arm end, the spacer spring arm configurable in an extended orientation and a compressed orientation, the spacer spring arm biased to the extended orientation; wherein, in the extended orientation, the nozzle cap spacer defines a substantially oblong shape, and in the compressed orientation, the nozzle cap spacer defines a substantially circular shape

A spring apparatus that has a section that is predominantly horizontal and a section of the spring that is predominantly vertical. The multiple spring assembly design allows for increased surface area, fluid flow, and improved heat transfer properties. The unique design allows the spring to fit in tight spaces and decreases issues when manufacturing complex spring designs and allows for efficient heat and fluid flow inside a tubular.

Materials, methods, and manufacture for controlled kinetic energy conversion are provided. In an aspect, a material may include a first section having a first set of voids and an associated first set of properties (e.g., mechanical, thermal), and a second section having a second set of voids and an associated second set of properties. The second set of properties of the second section may be configured to be selectively adjusting by at least partially filling one or more of the second set of voids with a substance. The substance may be configured to inhibit, prevent, or otherwise affect a desired deformation or collapse behavior of the material in response to a load.

A mounting structure of a dynamic damper capable of effectively reducing the vibration of a vibration body is provided. The mounting structure includes a suspension member 100 inhibiting the upward shift of a mass member 5. The suspension member 100 and plates 3 are configured as separate members, so that as compared with the case where a pair of plates 3 are coupled, the opposite interval between the plates 3 can be determined without being affected by the dimension accuracy of such the coupling portion. Thus, the thicknesses of the rubber elastic bodies 4 can foe formed at high accuracy, so that the mass member 5 can be easily vibrated at the desired frequency. Therefore, the vibration of the suspension member 100 can be effectively reduced.

The fluid damper device (10) has the rotor (30) which is inserted to the bottomed cylindrical case (20) and the cover (60) which is fixed to the opening portion (29) of the case (20). The welding protrusions (80) which are to be welded to the cover (60) are formed on the inside circumferential surface of the case (20) and spaced out in the circumferential direction. On the other side (L2) in the axial (L) direction of the welding range (X), within which the welding protrusions (80) and the cover are welded together, the first outflow prevention portion (91L, 91R) is formed. On the other side (L2) of the first outflow prevention portion (91L, 91R) in the axial (L) direction, the arc-shaped step surface (76) which functions as the outflow regulation portion (95) is provided to regulate the resin protruded and prevented it from reaching the position of the R-ring (49).

A shock absorber for a vehicle includes an inner tube at least partially defining an inner fluid compartment and an outer tube enclosing at least in part the inner tube therein. Together, the inner tube and the outer tube at least partially define an outer fluid compartment therebetween. The inner tube defines a bypass zone having a plurality of bypass apertures that fluidly communicate the inner fluid compartment with the outer fluid compartment. A piston is movably mounted within the inner tube and moves in compression and in rebound. The piston defines a piston passage extending through the piston for permitting fluid flow between a first side and second side of the piston. An electronically controlled valve is connected to the piston and controls fluid flow through the piston passage. A method for controlling the shock absorber is also disclosed.

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 which extend in the radial direction between the shaft fastening portion and the inertia ring and connect the shaft fastening part and the inertia ring to each other, and that absorb vibration acting on the crankshaft by undergoing deflection; and weight portions provided between adjacent ones of the elastic spoke portions. The fastening portion, inertial ring, elastic spoke portions, and weight portions are formed integrally by casting or forging.