Abstract: A shaft seal packing exhibits high sealability at the time of initial assembly and also exhibits, even after the packing is retightened, excellent sealability by an increased seal surface pressure obtained through an effect of pressing and by self-sealability obtained through an effect of fluid pressure. A shaft seal structure for a valve includes a body for a valve, a valve shaft, a valve disc disposed within the body so as to be rotatable or capable of ascending and descending, a valve shaft seal chamber having the valve shaft axially attached thereto, a shaft seal packing that is attached to the shaft seal chamber and comprises annular packing bodies stacked and substantially V-shaped in cross section, with stacked layer faces on the inner-diameter side of the packing bodies brought into tight contact with one another and stacked layer faces on the outer-diameter side of the packing bodies formed with prescribed gaps between the adjacent stacked layer faces.

Abstract: A shaft seal packing exhibits high sealability at the time of initial assembly and also exhibits, even after the packing is retightened, excellent sealability by an increased seal surface pressure obtained through an effect of pressing and by self-sealability obtained through an effect of fluid pressure. A shaft seal structure for a valve includes a body for a valve, a valve shaft, a valve disc disposed within the body so as to be rotatable or capable of ascending and descending, a valve shaft seal chamber having the valve shaft axially attached thereto, a shaft seal packing that is attached to the shaft seal chamber and comprises annular packing bodies stacked and substantially V-shaped in cross section, with stacked layer faces on the inner-diameter side of the packing bodies brought into tight contact with one another and stacked layer faces on the outer-diameter side of the packing bodies formed with prescribed gaps between the adjacent stacked layer faces.

Abstract: A pedal support structure for use in a vehicle contains a toe board, a steering support beam, a master cylinder, a pair of pedal support elements including pedal support portions, a supporting mechanism provided between the pedal support portions supporting a pedal lever, and a catcher bracket. When an impact is applied to the vehicle, the pedal support portions are spread apart so as to disconnect the pedal lever from the pedal supporting mechanism and the movement of the pedal lever in a direction toward an operator of the vehicle is restricted by the pedal lever contacting the catcher bracket.

Abstract: A pedal support structure for use in a vehicle contains a toe board, a steering support beam, a master cylinder, a pair of pedal support elements including pedal support portions, a supporting mechanism provided between the pedal support portions supporting a pedal lever, and a catcher bracket. When an impact is applied to the vehicle, the pedal support portions are spread apart so as to disconnect the pedal lever from the pedal supporting mechanism and the movement of the pedal lever in a direction toward an operator of the vehicle is restricted by the pedal lever contacting the catcher bracket.

Abstract: A ball check valve includes a body having a flow path and a turnout path formed therein and provided on a primary side thereof with an inlet and on a secondary side thereof with an outlet. A ball in the body a seating part for the ball, disposed in the inlet of the body and inclined toward the primary side in a state having the flow path laid horizontally, and a guide part provided with a part for causing the ball seated at the seating part to be retracted into the turnout path and guiding the retracted ball to the seating part, are provided. A pumping apparatus for discharging a fluid from a storage tank includes a pump alternating motions of pumping and stopping for controlling the fluid in the storage tank to a predetermined amount, a piping for discharging to the exterior the fluid of the storage tank being forwarded by the pump, and a ball check valve disposed on the piping and adapted to prevent the discharged fluid from flowing backward during stoppage of the pump.

Abstract: A method for making plastic containers comprises the steps of heating an axially subdivided area of a tubular parison to a temperature higher than that of the remaining axially subdivided portion prior to forming the container in a mold. Apparatus for accomplishing such heating includes a furnace provided with an endless conveyor and an auxiliary heater along a certain portion of the path of the conveyor.

Abstract: Articles such as containers made of a highly crystalline olefin polymer having improved transparency and impact strength are obtained by biaxially extending an extruded tubular body of said polymer at an orientation temperature below the melting point thereof to attain an extension magnification ratio of at least 1.5 for each of the longitudinal and lateral directions. The polymer is a statistical random copolymer of propylene and from 1.5% to 5.0%, and preferably from 3.0% to 5.0%, by weight ethylene having a melt index of 0.6 - 3.0 g/10 min. Optionally, from 0.03 to 0.20 part by weight of p-tert. butyl benzoic acid, benzoic acid or sodium benzoate are added to 100 parts by weight of said copolymer.

Abstract: Articles such as containers made of a crystalline olefin polymer having improved transparency and impact strength obtained by biaxially extending an extruded tubular body of said polymer at an orientation temperature below the melting point to attain an extension magnification ratio of at least 1.5 for each of longitudinal and lateral directions wherein said polymer is a statistical random copolymer of propylene and from 0.3% to 5.0% by weight ethylene having a melt index of 0.6 - 3.0 g/10 min. Optionally, from 0.03 to 0.20 part by weight of aluminum p-tert-butyl benzoate or sodium p-tert-butyl benzoate are added to 100 parts by weight of said copolymer.