Abstract: In this cast austenitic stainless steel, in a cross section when heated at 1000° C., an average number Nc per unit area of carbides having an equivalent circle diameter of 500 nm or larger in a center portion of an austenite crystal grain is 6.0×10?2 particles/?m2 or more, and, when an average number per unit area of the carbides having an equivalent circle diameter of 500 nm or larger in a vicinity of a grain boundary in an austenite crystal grain is represented as Ngb, Ngb/Nc is 1.3 or less.

Abstract: There is provided a pneumatic booster, comprising: a front shell; a rear shell; a housing formed as that respective openings of the front shell and the rear shell are integrally connected to each other, and a power piston arranged in the housing so as to divide an interior of the housing into a constant-pressure chamber on the front shell side and a working-pressure chamber on the rear shell side, wherein thrust force of the power piston generated by pressure difference between the constant-pressure chamber and the working-pressure chamber is applied to inputted force transmitted from a brake pedal to an input rod so as to obtain combined force, the combined force being outputted with a given boost ratio from an output rod, and wherein a thickness of the front shell is made to be thinner than a thickness of the rear shell.

Abstract: There is provided a pneumatic booster, comprising: a front shell; a rear shell; a housing formed as that respective openings of the front shell and the rear shell are integrally connected to each other, and a power piston arranged in the housing so as to divide an interior of the housing into a constant-pressure chamber on the front shell side and a working-pressure chamber on the rear shell side, wherein thrust force of the power piston generated by pressure difference between the constant-pressure chamber and the working-pressure chamber is applied to inputted force transmitted from a brake pedal to an input rod so as to obtain combined force, the combined force being outputted with a given boost ratio from an output rod, and wherein a thickness of the front shell is made to be thinner than a thickness of the rear shell.

Abstract: A valve body 2 is connected to a power piston, which divides a housing into a constant pressure chamber (negative pressure) and a variable pressure chamber. In the valve body 2, there is provided a brake assisting mechanism 10 between a reaction disk 3 and a plunger 9. A poppet seal 12 is opened by movement of the plunger 9, to thereby introduce atmospheric air into the variable pressure chamber and generate a thrust force in the power piston. During rapid braking, a plunger rod 23 advances relative to a sleeve 21, and balls 30 shift outward and the plunger rod 23 directly abuts against a reaction rod 22, resulting in contraction of the brake assisting mechanism 10. Therefore, the amount of movement of the plunger 9 can be increased without being affected by a reaction force from the reaction disk 3, thus enabling rapid development of servo power.

Abstract: A valve body 2 is connected to a power piston, which divides a housing into a constant pressure chamber (negative pressure) and a variable pressure chamber. In the valve body 2, there is provided a brake assisting mechanism 10 between a reaction disk 3 and a plunger 9. A poppet seal 12 is opened by movement of the plunger 9, to thereby introduce atmospheric air into the variable pressure chamber and generate a thrust force in the power piston. During rapid braking, a plunger rod 23 advances relative to a sleeve 21, and balls 30 shift outward and the plunger rod 23 directly abuts against a reaction rod 22, resulting in contraction of the brake assisting mechanism 10. Therefore, the amount of movement of the plunger 9 can be increased without being affected by a reaction force from the reaction disk 3, thus enabling rapid development of servo power.

Abstract: A cross dichroic prism comprises four triangular prisms having isosceles right triangular cross sections identical in shape, opposing side faces thereof being bonded and secured together with rectangular portions thereof facing each other; and a dichroic film having an X-shaped cross section formed between the bonding faces of the triangular prisms; wherein, of the four triangular prisms, a given prism and at least one of the prisms adjacent thereto have a refractive index difference therebetween of 0.00005 or less, and the remaining two prisms opposed thereto have a refractive index difference therebetween of 0.00005 or less.

Abstract: A pin slide mechanism 3 comprises a pair of support portions 23, 24 on a carrier 1 secured to a non-rotating portion of a vehicle. A support portion 24 provided on a tip end of an arm 28 extends from the carrier 1 inwardly of the vehicle. By slidably fitting a cylindrical portion 27 provided on a caliper body 2 via a sleeve 26 onto a pin portion 25a of a pin/bolt 25, the caliper body 2 is secured to the support portions 23, 24. The caliper has an increased weight by containing an electrically-driven device therein, and is supported by the support portions 23, 24 in a straddle-mounted fashion to prevent inclination of the caliper during braking.

Abstract: A cross dichroic prism comprises four triangular prisms having isosceles right triangular cross sections identical in shape, opposing side faces thereof being bonded and secured together with rectangular portions thereof facing each other; and a dichroic film having an X-shaped cross section formed between the bonding faces of the triangular prisms; wherein, of the four triangular prisms, a given prism and at least one of the prisms adjacent thereto have a refractive index difference therebetween of 0.00005 or less, and the remaining two prisms opposed thereto have a refractive index difference therebetween of 0.00005 or less.

Abstract: An improved heat-insulating support device is disclosed which is capable of supporting a coolant tank to a vacuum vessel in a manner such that when the vacuum tank is subjected to a great external force after the coolant tank has been cooled down to a cryogenic temperature, the coolant tank and hence cryogenic equipment mounted thereon are held in place and prevented from being displaced beyond a prescribed allowable range, without impairing the intended heat-insulating capability thereof.