摘要:
A safety interlocking device has a locking unit for mounting on the safe side to a door relative to a hazardous region, and a locking cage for mounting on a door frame interacting with the door. In order to be able to open, from the hazardous region, the locked door and escape from the hazardous region, an escape unlocking device is provided for unlocking the safety interlocking device. The locking cage has a locking stop which is articulated to a base plate so as to be able to pivot about a pivot axis from an interlocking position into an emergency opening position. The escape unlocking device possesses at least one arresting tip which, in an escape position, releases the locking stop for pivoting into the emergency opening position. Provided between an emergency handle and the arresting tip is a stretched rod piece which is embodied so as to be displaceable together with the arresting tip. In the normal position of the escape unlocking (EU) device, the arresting tip is in arresting operative connection with a first arresting surface of the locking stop and a second arresting surface of the base plate. At least one of these operative connections can be released by displacement of the arresting tip in the rod direction.
摘要:
A set is disclosed with a position sensor and an exciter part. The position sensor has three reed contacts which are pointed parallel to one another in a triangle arrangement next to one another, of which the first two are used for doubled detection of the exciter magnetic field. The third reed contact is used to generate an error signal when the sensor is activated by means of an outside magnetic field. The exciter part has three permanent magnets which are arranged in a triangle arrangement which corresponds to the triangle arrangement of the reed contacts, with pole axes aligned parallel to one another. Of them, the first two magnets are pointed in the same direction and are located at a first distance to one another. The third magnet is polarized in the direction opposite the first two. This results in that only the two make contacts can be activated by the two bar magnets which are pointed in the same direction. Conversely, all three reed contacts are activated each by an outside magnetic field. This yields a manipulation-safe proximity switch.
摘要:
A sensor is disclosed for monitoring a part which can move translationally relative to a sensor with reference to its position on the axis of motion. This part is for example a piston in a cylinder which is equipped with a sensor. The sensor can be actuated by means of a magnet which is oriented in the direction of motion with respect to the north and south pole and which is located on the movable part. The sensor has three reed contacts which are aligned in parallel and of which the first and the second reed contact are located in one plane and parallel next to one another with their lengthwise axes, by which they can be actuated almost at the same time by the magnetic field of the magnet which is located on the movable part. The third reed contact is located at a distance to the plane of the first and the second reed contact. This sensor with the first two reed contacts is mounted facing the actuating magnet. This arrangement has the advantage that an external magnetic field always actuated the third reed contact as well, if it can actuate the first two reed contacts. Then the sensor indicates an error report or an unsafe position, but never a safe position of the movable part.
摘要:
A sensor is disclosed for monitoring a part which can move translationally relative to a sensor with reference to its position on the axis of motion. This part is for example a piston in a cylinder which is equipped with a sensor. The sensor can be actuated by means of a magnet which is oriented in the direction of motion with respect to the north and south pole and which is located on the movable part. The sensor has three reed contacts which are aligned in parallel and of which the first and the second reed contact are located in one plane and parallel next to one another with their lengthwise axes, by which they can be actuated almost at the same time by the magnetic field of the magnet which is located on the movable part. The third reed contact is located at a distance to the plane of the first and the second reed contact. This sensor with the first two reed contacts is mounted facing the actuating magnet. This arrangement has the advantage that an external magnetic field always actuated the third reed contact as well, if it can actuate the first two reed contacts. Then the sensor indicates an error report or an unsafe position, but never a safe position of the movable part.
摘要:
A set is disclosed with a position sensor and an exciter part. The position sensor has three reed contacts which are pointed parallel to one another in a triangle arrangement next to one another, of which the first two are used for doubled detection of the exciter magnetic field. The third reed contact is used to generate an error signal when the sensor is activated by means of an outside magnetic field. The exciter part has three permanent magnets which are arranged in a triangle arrangement which corresponds to the triangle arrangement of the reed contacts, with pole axes aligned parallel to one another. Of them, the first two magnets are pointed in the same direction and are located at a first distance to one another. The third magnet is polarized in the direction opposite the first two. This results in that only the two make contacts can be activated by the two bar magnets which are pointed in the same direction. Conversely, all three reed contacts are activated each by an outside magnetic field. This yields a manipulation-safe proximity switch.
摘要:
A safety interlocking device has a locking unit for mounting on the safe side to a door relative to a hazardous region, and a locking cage for mounting on a door frame interacting with the door. In order to be able to open, from the hazardous region, the locked door and escape from the hazardous region, an escape unlocking device is provided for unlocking the safety interlocking device. The locking cage has a locking stop which is articulated to a base plate so as to be able to pivot about a pivot axis from an interlocking position into an emergency opening position. The escape unlocking device possesses at least one arresting tip which, in an escape position, releases the locking stop for pivoting into the emergency opening position. Provided between an emergency handle and the arresting tip is a stretched rod piece which is embodied so as to be displaceable together with the arresting tip. In the normal position of the escape unlocking (EU) device, the arresting tip is in arresting operative connection with a first arresting surface of the locking stop and a second arresting surface of the base plate. At least one of these operative connections can be released by displacement of the arresting tip in the rod direction.
摘要:
The manufacture of optically active bifunctional compounds of the general formula ##STR1## wherein R represents protected hydroxymethyl, protected formyl or alkoxycarbonyl and R.sup.1 represents a group of the formula ##STR2## or --CH.sub.2 --CH.dbd.NR.sup.2 in which R.sup.2 and R.sup.3 represent lower alkyl or cycloalkyl or R.sup.2 and R.sup.3 together with the nitrogen atom represent a heterocyclic ring,by isomerizing compounds of the general formula ##STR3## wherein R, R.sup.2 and R.sup.3 have the above significance and R.sup.3 can additionally signify hydrogen,is described.The compounds of formula I are potential intermediates in the manufacture of, inter alia, natural vitamin E and natural vitamin K.sub.1.
摘要:
A process for asymmetrically hydrogenating through the use of microorganisms a double bond connected to tertiary carbon atom in an olefinic aliphatic compound to produce a tertiary, optically active aliphatic compound useful as an intermediate for optically active Vitamins E and K.
摘要:
The disclosure relates to a locking system with an electromagnet and a yoke plate that closes the magnetic circuit of the electromagnet. In the latter, the electromagnet is fastened with a fastening element to pivot around a point on a central axis and is tightly fastened in the longitudinal direction of the central axis. Said central axis runs perpendicular to the contact plane between the electromagnet and the yoke plate and through the center of the holding force of the closed electromagnet. As a result, a force that acts against the magnetic force to detach the yoke plate from the pole surface always acts coaxially with the magnetic force, thus keeping the yoke plate from being detached from the pole surface on one side.
摘要:
A process for producing dihydro-4,4-dimethyl-2,3-furandione by oxidizing dihydro-3-hydroxy-4,4-dimethyl-2(3H)-furanone with a solid alkali metal hypochlorite or alkaline earth metal hypochlorite in an organic phase is disclosed.