Abstract: An apparatus for mutual conversion between circular motion and reciprocal motion includes a lever member which is rotatably mounted on a line connecting a rotational center and a circumference of a rotary disk, the lever member having a fulcrum, an action point and a force point, and being provided with a first regulator serving as an action point regulator land a second regulator serving as a movable fulcrum regulator. The first regulator is coupled to a reciprocating body. The movable fulcrum regulator has support members for supporting the fulcrum point and the first regulator has support members for supporting the action point in a longitudinal direction of the lever member.

Abstract: A fulcrum of a lever member which is rotatably supported by a stationary shaft has force and action points provided with a force point regulator and an action point regulator, respectively. Each of the regulators has a roller and a pair of guide plates guiding the roller between the guide plates as the lever member is rotated about the fulcrum supported by the stationary shaft.

Abstract: An apparatus for mutual conversion between circular motion and reciprocal motion includes a lever member which is rotatably mounted on a line connecting a rotational center and a circumference of a rotary disk, the lever member having a fulcrum, an action point and a force point, and being provided with a first regulator serving as an action point regulator and a second regulator serving as a movable fulcrum regulator. The first regulator is coupled to a reciprocating body. The movable fulcrum regulator has support members for supporting the fulcrum point and the first regulator has support members for supporting the action point in a longitudinal direction of the lever member.

Abstract: A lever unit 11 having a fulcrum regulator 12 movably connected to a first motor 14 and a force point regulator 13 movably connected to a second motor 15, in which the motor 15 is driven while the motor 14 is stopped, thereby moving an injection mold 20A to come close to the other mold 20B, and mold locking of the molds 20A and 20B is executed by driving the motor 15 at this position.

Abstract: A lever member (1) is pivotally supported on a shaft for a roller (2) which is in rolling contact with a guide plate (3). One end of the lever member (1) is connected to a force point regulator (4), and the other end of the lever member is connected to an action point regulator (6).

Abstract: A large number of keys arranged in a matrix are provided on the keyboard (KB) of a host computer. Of these keys, keys (K10, . . . , K15, . . . ), located at positions corresponding to Learning terminals in a classroom, are assigned to the respective learning terminals.

Abstract: When an output from a sensor (11) is decreased below a key-lock release preset value (K), a comparator (19) generates an output so as to reset a flip-flop (21) and to enable an AND gate (22). When the output from the sensor (11) is decreased below a reset preset value (R), a comparator (20) generates an output so as to supply a reset signal to an integrated value holding unit (16) through the AND gate (22) and to reset the flip-flop (21), thus thereafter restarting an integral action by the integrated value holding unit (16).

Abstract: Sampling pulses are obtained by a plurality of sampling through holes which are formed at equal angular intervals in a disc encoder which is fixed to a crankshaft of a piston engine to be measured. An analog output from a pressure sensor for sensing the pressure inside a cylinder is sampled, held by the obtained sampling pulses and converted into a digital signal to provide digital measurement data. The digital measurement data is written into a RAM during a positive period of an internal clock pulse under the control of a direct memory access control circuit and the RAM is accessed by a CPU during a negative period of the internal clock pulse. The digital data read out of the RAM is undergone for the data arithmetic operation by the CPU in the realtime manner.

Abstract: A flame-retardant fiber is made comprising 20 - 95% by weight of amino resin condensate of an amino compound and formaldehyde in which the amino compound may be a melamine, combined melamine and guanamine, combined melamine and urea, combined melamine, guanamine and urea, and benzoguanamine and/or urea, and in which the chemical bond linking the polymer chain is for the most part methylene linkage and 80 - 5% by weight of polyvinylalcohol, the resulting fiber being cured when necessary and having a tensile strength of at least 1.0 g/d., and having a break elongation of at least 5%.