摘要:
An eccentric thrust bearing assembly mounted in a wheel with built-in suspension including: an outside wheel member including a rim portion to which a tire is mounted; an inside wheel member including a disk portion coupled with an axle; and an elastic member interposed between the outside wheel member and the inside wheel member, the bearing assembly permitting an eccentric relative movement between the wheel members while bearing an axial load applied between the wheel members.
摘要:
The object of the present invention is to provide red synthetic mica, which develops light-resistant red color closer to color of human skin and ultraviolet ray, and also to provide a method for manufacturing the same and an ultraviolet ray screening agent containing said synthetic mica. The synthetic mica of the present invention is characterized in that, it is expressed by the following formula (I):
X 1/3∼1 Y 2∼3 (Z₄ O₁₀) F 2×0.75∼2×0.99 (I)
(where X represents one or more types of ions selected from a group of Na, K, Li, Ca, Rb and Sr, Y represents one or more types of ions selected from a group of Mg, Fe, Ni, Mn, Al, Li, Co, Ti and Zn, Z represents one or more types of ions selected from a group of Al, Si, Ge, Fe, B, Co and Ti, and at least one of Y and Z represents an iron ion), molar number of iron contained in said synthetic mica is 0.01 to 3 mols, and, when said synthetic mica is measured by powder cell method, its color is given by L* = 55 to 75, a* = 5 to 20, and b* = 5 to 20 by the CIE 1976 (L*a*b*) space.
摘要:
This heat treatment process is applicable to bushings used in tracks of endless track tractor and does not deteriorate wear resistance, fatigue strength, and toughness of bushings. As this method can reduce the number of heat treatment process steps and save energy, it enhance productivity and reduces cost of bushing manufacture. These advantages are achieved by the treatment steps of heating a bushing made of middle carbon low alloy steel material from the outer peripheral surface thereof until the inner circumferential surface thereof achieves the temperature range of Ac₃ ≦ T ≦ Ac₃ + 50 (T [°C] : temperature of heated inner circumferential surface, Ac₃ [°C] : transformation temperature) by means of induction heating, cooling the same from the outer peripheral surface, resulting in hardening the same along the entire thickness thereof, and then tempering.
摘要:
An elastic wheel, comprising a disk (1) having a base rim (2) and a rim (3) supporting a tire, a pair of guides (4) fixedly installed annularly on the inner peripheral surface of the rim (3), and a pair of wall parts (5) fixedly installed annularly on the outer peripheral surface of the base rim (2) in both side areas in the axial direction of the wheel, wherein a rubber elastic body (6) is provided annularly between the side surfaces of the guides (4) and the side surfaces of the wall parts, respectively, whereby vibration can be absorbed by a shearing deformation of the installed rubber elastic bodies (6) so as to, particularly, increase the riding comfortableness performance, vibrationproof performance, and soundproof performance against a small input, the soundproof performance being extremely effective to soundproofing in a high frequency area of 100 Hz or higher.
摘要:
An elastic wheel, comprising a disk (1) having a base rim (2) and a rim (3) pivotally supporting a tire (10), wherein a projected part (5) with a generally trapezoidal cross-section in the wheel axis direction is formed in a well of the rim (3), and a pair of elastic rubber bodies (6) are provided annually between the outer surfaces of a pair of wall parts (4a, 4b) formed by bending the both sides of the base rim (2) at a sharp angle and the rim inner peripheral surface of the generally trapezoidal projected part (5), whereby vibration can be absorbed by both the shearing deformation and compressive deformation of the installed elastic rubber bodies (6) so as to increase riding comfort, vibration proofing, and sound proofing performances in the area ranging from small input to large input, the sound proofing performance being very effective for sound in a high frequency area of 100 Hz or higher.
摘要:
The object of the present invention is to provide composite synthetic mica powder having excellent ultraviolet ray screening effect. The composite synthetic mica powder of the present invention is characterized in that a mica fine particle layer (B) containing one or more types of elements selected from a group of Te, Bi, Pb, Ce, Fe, Mo, Nb, W, Sb, Sn, V, Mn, Ni, Co, Zn and Ti is formed on the surface of scale-like mica particles (A), whereby: covering ratio of said particles (A) by said particles (B) is lower than or equal to 1 and higher than or equal to 0.5; and ratio of particle size of said particles (B) to plane direction diameter of said particles (A) is lower than or equal to 0.1, and particle size of said particles (A) is 1 to 100 µm. Another object of the present invention is to provide red synthetic mica, which develops light-resistant red color closer to color of human skin and ultraviolet ray, and also to provide a method for manufacturing the same and an ultraviolet ray screening agent containing said synthetic mica. The synthetic mica of the present invention is characterized in that, it is expressed by the following formula (I): X 1/3∼1 Y 2∼3 (Z₄ O₁₀) F 2×0.75∼2×0.99 (I) (where X represents one or more types of ions selected from a group of Na, K, Li, Ca, Rb and Sr, Y represents one or more types of ions selected from a group of Mg, Fe, Ni, Mn, Al, Li, Co, Ti and Zn, Z represents one or more types of ions selected from a group of Al, Si, Ge, Fe, B, Co and Ti, and at least one of Y and Z represents an iron ion), molar number of iron contained in said synthetic mica is 0.01 to 3 mols, and, when said synthetic mica is measured by powder cell method, its color is given by L*=55 to 75, a*=5 to 20, and b*=5 to 20 by the CIE 1976 (L*a*b*) space.