Abstract: An engagement chain type hoisting and lowering device is disclosed, having a hoisting and lowering table attached to the upper end of two or more pairs of hoisting and lowering driving engagement chains. A driving motor drives two pairs of hoisting and lowering sprockets which, in turn, raise or lower two pairs of hoisting and lowering driving engagement chains. By arranging two pairs of hoisting and lowering driving engagement chains on two opposed sides of the hoisting and lowering table, buckling of the hoisting and lowering driving engagement chains is suppressed, resulting in stable hoisting and lowering operations without slippage of articles on the hoisting and lowering table, and chain endurance is improved. The device is designed so that the lowest position of the hoisting and lowering table can be lower than the height of the peripherally located driving motor, for ease and safety of operation and maintenance.

Abstract: An engagement chain type hoisting and lowering device is disclosed, including a hoisting and lowering table attached to the upper end of hoisting and lowering driving engagement chains. The engagement chains are raised and lowered by a pair of hoisting and lowering sprockets driven by a driving motor. The driving motor is located in a peripheral area spaced apart from the lowest lowered position of the hoisting and lowering table. In so doing, the lowest position of the hoisting and lowering table is lowered, reducing the burden of loading and unloading items onto the hoisting and lowering table, and making maintenance safe and simple.

Abstract: When in order to enable the use of a plurality of applications (AP1 to AP3) simultaneously, preparation commands, having identifiers attached, are provided according to the respective applications and working areas for the respective applications are secured inside a RAM (134). By providing a verification command having a specific identifier, a verification process concerning a specific application is performed and a verification result is stored in the corresponding application working area. This verification result is used until the completion of a communication session. To make a specific application execute a desired process, a process executing command that designates an identifier attached to the corresponding application is provided. Adequate security can be ensured and yet a series of linked processes can be performed smoothly while switching among a plurality of application programs in the same communication session.

Abstract: A constant velocity joint, wherein the tilt angle of a first trunnion relative to a plane crossing perpendicularly to the axis of a second shaft is set to be different from the tilt angle of a second trunnion and the tilt angle of a third trunnion.

Abstract: Switching between a requiring mode and a non-requiring mode of password code checking is enabled by an IC card with a CPU for accessing an EEPROM. The general data in the EEPROM are stored upon attachment of error check codes. The memory area of EEPROM is partitioned into unit areas of 2-byte length and writing is performed according to unit areas. The MSB of a specific unit area Ux is used as a checking requirement flag with “1” being defined as checking “required” and “0” being defined as checking “not required”. In rewriting the checking requirement flag, an erasure process sets all bits in the unit area Ux to “1” and thereafter the desired flag is set in the MSB.

Abstract: Authentification data (R) comprising random numbers generated by a reader/writer (200) is given to an IC card (100), encrypted by utilizing a secret key (a), and returned as encryption data (C). This encryption data (C) is decoded by utilizing an open key (?) to authentify the IC card. A set of past given authentification data (R) is stored in an authentification data storage section (130): if another set of given authentification data (R) is the same as the set of past data, an encryption operating section (150) is prevented from executing an illegal statistical analysis technique by repeatedly giving encrypting operation the same set of authentiification data (R).

Abstract: An annular member is installed on a circular cylinder section of a trunnion, and a roller member, in the inner periphery of which a needle bearing is held, is installed on the circular cylinder section. The needle bearing is held between a flange section formed on one end of the roller member and the annular member installed on the trunnion with a predetermined gap between them. Further, a gap (X) between the needle bearing and the annular member is set to satisfy the following relationship. X>R/2·(1/cos ? max?1) where R: Radius of rotation of the center of the roller member relative to the center axis of an outer member. ? max: Maximum inclination angle of an inner member.

Abstract: Roller members of a constant velocity universal joint are externally fitted to trunnions with a plurality of needle bearings interposed between the roller members and the trunnions. The roller member has an inner diameter portion having an L-shaped cross section by a flange section which protrudes radially inwardly and an annular recess section which is provided and defined by a gap with respect to the trunnion. The plurality of needle bearings are retained on the inner diameter portion of the roller member by paste wax.

Abstract: When in order to enable the use of a plurality of applications (AP1 to AP3) simultaneously, preparation commands, having identifiers attached, are provided according to the respective applications and working areas for the respective applications are secured inside a RAM (134). By providing a verification command having a specific identifier, a verification process concerning a specific application is performed and a verification result is stored in the corresponding application working area. This verification result is used until the completion of a communication session. To make a specific application execute a desired process, a process executing command that designates an identifier attached to the corresponding application is provided. Adequate security can be ensured and yet a series of linked processes can be performed smoothly while switching among a plurality of application programs in the same communication session.

Abstract: Authentification data (R) comprising random numbers generated by a reader/writer (200) is given to an IC card (100), encrypted by utilizing a secret key (a), and returned as encryption data (C). This encryption data (C) is decoded by utilizing an open key (&bgr;) to authentify the IC card. A set of past given authentification data (R) is stored in an authentification data storage section (130): if another set of given authentification data (R) is the same as the set of past data, an encryption operating section (150) is prevented from executing an illegal statistical analysis technique by repeatedly giving encrypting operation the same set of authentiification data (R).

Abstract: While ensuring adequate security, switching between requiring mode and non requiring mode of the checking of a password code for use is enabled. An EEPROM (11) and an IC card with a CPU for accessing this EEPROM are prepared. The general data in the EEPROM are stored upon attachment of error check codes. The memory area of EEPROM (11) is partitioned into unit areas of 2-byte length and writing is performed according to unit area. The MSB of a specific unit area Ux is used as a checking requirement flag with “1” being defined as checking “required” and “0” being defined as checking “not required”. A password code checking process is carried out only in the checking “required” mode. An error check code is not added to the data in the unit area Ux. In rewriting the checking requirement flag, an erasure process of setting all bits in the unit area Ux to “1” is performed and thereafter the desired flag is set in the MSB.

Abstract: An apparatus for preventing urging rotation of a ball screw shaft in a linear working machine includes a housing. A compressive force stopper and a tensile force stopper is contained in an outer casing of the housing. The compressive force stopper and the tensile force stopper are pressed against the compressive force receptive rotation member and the tensile force receptive rotation member respectively. A coil spring is strictly wound around an outer periphery of the compressive force receptive rotation member and the tensile force receptive rotation member. Urging rotation of the ball screw shaft by external force in an axial direction is prevented by the compressive force receptive rotation member, the tensile force receptive rotation member and the coil spring.