Abstract: In a strut type shock absorber (1), a lower cap (2) is welded onto an inner circumferential surface of an outer shell (3) at a step (16) formed in a retreated position from an axial tip of the outer shell (3). The axial tip of the outer shell (3) is welded onto the inner circumferential surface of a knuckle bracket (6) which holds the outer shell (3). Since welding of the lower cap (2) onto the outer shell (3) and welding of the knuckle bracket (6) onto the outer shell (3) are conducted at different positions, the lower cap (2) is welded onto the outer shell (3) without suffering from blowholes irrespective of the material forming the knuckle bracket (6), and as a result, a weld bead (17) having a high degree of air-tightness is formed.

Abstract: A cylindrical rebound cushion (8) is fitted to an outer circumference of a piston rod (5) inserted in a cylinder (3) of a hydraulic shock absorber (1). An upper end surface (8a) of the rebound cushion (8) comes Into contact with a rod guide (6) fixed to the cylinder (3) when the piston rod (5) reaches a protruding limiting position. Recesses (9) are provided in the upper end surface (8a) of the rebound cushion (8) at regular angular intervals in order to provide working oil between the rod guide (6) and the upper end surface (8a), thereby ensuring smooth rotation of the rebound cushion (8) with respect to the rod guide (6) when the piston rod (5) at the protruding limiting position and the cylinder (3) relatively rotate.

Abstract: Iron oxide particles having the surface thereof coated with a layer of a complex iron oxide containing Al and Mg are disclosed. The total content of Al and Mg in the complex iron oxide layer is 0.1 to 2.5% by weight based on the whole iron oxide particles. The Mg content in the complex iron oxide layer is 0.05 to 1% by weight based on the whole iron oxide particles. The Al content in the complex iron oxide layer is 0.05 to 1.7% by weight based on the whole iron oxide particles. The Mg content in the complex iron oxide layer is 20% or more based on the total Mg content of the whole iron oxide particles.

Abstract: A cylindrical rebound cushion (8) is fitted to an outer circumference of a piston rod (5) inserted in a cylinder (3) of a hydraulic shock absorber (1). An upper end surface (8a) of the rebound cushion (8) comes Into contact with a rod guide (6) fixed to the cylinder (3) when the piston rod (5) reaches a protruding limiting position. Recesses (9) are provided in the upper end surface (8a) of the rebound cushion (8) at regular angular intervals in order to provide working oil between the rod guide (6) and the upper end surface (8a), thereby ensuring smooth rotation of the rebound cushion (8) with respect to the rod guide (6) when the piston rod (5) at the protruding limiting position and the cylinder (3) relatively rotate.

Abstract: In a hydraulic shock absorber (1), a piston rod (5) protrudes from a cylinder (3) filled with hydraulic fluid. A rebound cushion (8) is fitted to an outer circumferential surface of the piston rod (5) in the cylinder (3). A stopper (6) fixed to the cylinder (3) contacts the rebound cushion (8) at an protrusion limiting position of the piston rod (5) to prevent further protrusion of the piston rod (5). An oil pool (8a, 9, 10, 15) formed in a sliding surface (8a, 14) of the rebound cushion (8) supplies oil to the sliding surface that slides on any of the inner circumferential surface of the cylinder (3) and the outer circumferential surface of the piston rod (5) to ensure smooth relative rotation of the piston rod (5) at the protrusion limiting position and the cylinder (3).

Abstract: Iron oxide particles having the surface thereof coated with a layer of a complex iron oxide containing Al and Mg are disclosed. The total content of Al and Mg in the complex iron oxide layer is 0.1 to 2.5% by weight based on the whole iron oxide particles. The Mg content in the complex iron oxide layer is 0.05 to 1% by weight based on the whole iron oxide particles. The Al content in the complex iron oxide layer is 0.05 to 1.7% by weight based on the whole iron oxide particles. The Mg content in the complex iron oxide layer is 20% or more based on the total Mg content of the whole iron oxide particles.

Abstract: A one-package thixotropic polyurethane resin composition comprising 10 to 90% by weight of a urethane prepolymer having a terminal free isocyanate group(a) which is obtained by reacting a polyisocyanate(b) with a compound having two or more active hydrogens(c), a monool(d) and an (N-hydroxyalkyl-oxazolidine compound(e), 0.1 to 20% by weight of hydrophobic fine powder silica(f) and 0.01 to 3.0% by weight of an oxazolidine-ring opening accelerator(g) is suitable for the use as a low modulus type sealant excellent in storage stability and curability and having low modulus and controlled foaming.

Abstract: Magnetite particles continuously contain a total amount of 0.2 to 1.2 wt. %, based on magnetite, of a silicon component and an aluminum component expressed as silicon and aluminum, in a region ranging from the center to the surface of the particle, a total amount of 0.01 to 0.5 wt. % of the silicon component and the aluminum component, expressed as silicon and aluminum, being exposed on the surface of the particle, and an outer shell of the particle being coated with a metal compound comprising at least one metal component bound to the silicon component and the aluminum component, the metal component being selected from the group consisting of Zn, Mn, Cu, Ni, Co, Cr, Cd, Zr, Sn, Mg, Ti, Ce, W and Mo and a process for their preparation.

Abstract: Magnetite particles continuously containing 0.2 to 1.0 wt. %, based on magnetite, of a silicon component expressed as silicon, in a region ranging from the center to the surface of the particle; 0.01 to 0.3 wt. % of the silicon component being exposed on the surface of the particle; and an outer shell of the particle being coated with a metal compound comprising at least one metal component bound to the silicon component, the metal component being selected from the group consisting of Zn, Mn, Cu, Ni, Co, Cr, Cd, Al, Sn, Mg, Ti and Ce, and a process for preparing the particles.

Abstract: A composition for carpet backings which comprises:(a) an aqueous dispersion of a high molecular weight polymer; and(b) a blocked polyisocyanate in amounts of about 0.5-30 parts by weight in relation to 100 parts by weight of the solids of the aqueous dispersion.The composition preferably further contains a melamine resin in amounts of about 0.1-10 parts by weight, and/or a vulcanizing agent in amounts of about 0.5-10 parts by weight, each in relation to 100 parts by weight of the solids of the aqueous dispersion.The carpet having backings formed with the composition is excellent in washability so that there takes place little shrinkage and curling after repeated washing.

Abstract: A process for producing a window glass with a thin film thereon, which comprises coating a coating solution on a glass substrate by flexographic printing and then baking the coated glass substrate to form a thin film.