Abstract: An anti-vibration rubber composition contains: a polymer comprising component (A); and components (B) to (E). The mixing ratio of the components (B) and (C) is in a range of (B)/(C)=99/1 to 96/4 in weight ratio. As a result, it becomes possible to achieve a low dynamic magnification and to achieve both durability and weather resistance at a high level. (A) diene rubber; (B) silica; (C) carbon black; (D) silane coupling agent; (E) dihydrazide compound represented by general formula (1). [in general formula (1), R represents an alkylene group having 1 to 30 carbon atoms, a cycloalkylene group having 1 to 30 carbon atoms, or a phenylene group].

Abstract: A vibration isolation rubber composition containing the following components (B) to (E) together with a polymer made of a component (A) below is provided. Accordingly, it is possible to achieve both heat resistance and a low dynamic-to-static modulus ratio at a high level without impairing durability. In the vibration isolation rubber composition, (A) is a diene rubber, (B) is a filler, (C) is a dihydrazide compound, (D) is any one of a (meth)acrylic acid monomer, zinc oxide, and zinc (meth)acrylate, and (E) is a sulfur vulcanizing agent.

Abstract: A vibration isolation rubber composition containing the following components (B) to (E) together with a rubber compound made of the following (A) is produced, which makes it possible to highly satisfy both heat resistance and the reduction of dynamic magnification factors. The vibration isolation rubber composition containing (A) a diene-based rubber containing natural rubber as a main component, (B) a filler, (C) a hydrazide compound, (D) a disulfide compound represented by General Formula (1), and (E) a sulfur-based vulcanizing agent. [In General Formula (1), a ring A and a ring B each indicate a nitrogen-containing heterocyclic group having 4 to 24 carbon atoms.

Abstract: An anti-vibration rubber composition contains: a polymer comprising component (A); and components (B) to (E). The mixing ratio of the components (B) and (C) is in a range of (B)/(C)=99/1 to 96/4 in weight ratio. As a result, it becomes possible to achieve a low dynamic magnification and to achieve both durability and weather resistance at a high level. (A) diene rubber; (B) silica; (C) carbon black; (D) silane coupling agent; (E) dihydrazide compound represented by general formula (1).

Abstract: Provided is an anti-vibration rubber composition, including the following components (A) to (D), in which a ratio of the component (B) to a total content of the components (A) and (B) is from 5 wt. % to 20 wt. %: (A) A natural rubber, or a blended rubber of the natural rubber and a butadiene rubber; (B) A hydrogenated styrene-butadiene block copolymer; (C) A sulfur-based vulcanizing agent; (D) Zinc monomethacrylate. Thus, there can be provided an anti-vibration rubber composition and an anti-vibration rubber each of which is excellent in heat resistance, and has both a high damping property and a low dynamic-to-static modulus ratio.

Abstract: Provided is an anti-vibration rubber composition, including the following components (A) to (D), in which a ratio of the component (B) to a total content of the components (A) and (B) is from 5 wt. % to 20 wt. %: (A) A natural rubber, or a blended rubber of the natural rubber and a butadiene rubber; (B) A hydrogenated styrene-butadiene block copolymer; (C) A sulfur-based vulcanizing agent; (D) Zinc monomethacrylate. Thus, there can be provided an anti-vibration rubber composition and an anti-vibration rubber each of which is excellent in heat resistance, and has both a high damping property and a low dynamic-to-static modulus ratio.

Abstract: A device including a torsion bar rotatably mounted on the vehicle frame transversely thereof and a pair of rock arms extending integrally from the opposite ends of the torsion bar at right angles thereto and connected with a right and a left wheel, respectively. An abutment arm is fixed to the torsion bar at the middle thereof and engageable with a stop pad provided on the vehicle frame, when either or both of the wheels are moved down, to restrain further downward movement thereof. Thus, the spring rate of air springs associated with the respective wheels is in effect increased as the loads thereon are reduced, particularly in a lower load region.

Abstract: A wheel suspension apparatus in which respective knuckles of a pair of left and right wheels are supported on a frame of the vehicle body through respective radius rods extending forwardly and respective shock absorbers extending upwardly, the knuckles being pivotably connected to respective swingable lower arms extending inwardly and interconnected at their inner ends to form a transversely extending integral rigid shaft which is supported on the vehicle body frame through a Panhard rod.

Abstract: A device for controlling the fluid pressure to be imparted to a jet stream of fluid to entrain a weft yarn to be picked into the shed of warp yarns in a weft inserting arrangement of a shuttleless weaving loom, comprising flow restriction means and pressure accumulating means provided intermediate a source of fluid under pressure and a fluid discharge nozzle from which the jet stream of fluid is to be shot. The flow restriction means and the pressure accumulating means are arranged in such a manner that the supplied fluid pressure is accumulated to a certain quantity during a period intervening between consecutive two picking cycles and supplied during each picking cycle to the nozzle at a rate which is gradually decreased towards the end of the picking cycle so that the weft yarn is picked at a velocity that gradually diminishes as the pick of the yarn shot from one end of the shed approaches the other end of the shed.