Abstract: A pedal arm as a lever member is supported at its fulcrum by a roller, which is held for movement in a guide groove. A crank pin in an eccentric position on a gear is coupled to the point of action of the pedal arm, whereby the rotation of the gear is transmitted to a rear wheel.

Abstract: A support frame (14) is provided above a base (10), defining a working space (16) together with the support frame. An automatic die-replacing mechanism (24) is provided in the working space, for moving a selected one of a plurality of die units (78) to a predetermined working position. A support base table is provided with an elevating axle (18) for opening and closing the die unit located at the working position, and a drive mechanism section for moving the elevating axle up and down. The drive mechanism section has a pulse servomotor (38) and an oscillating-fulcrum mechanism (22) for transmitting a drive force to the elevating axle. The oscillating arm (46) of the oscillating-fulcrum mechanism has a fulcrum section supported by the support table, a power-point section supported by a shaft which is rotated by the pulse servomotor, and an application-point section coupled to the elevating axle.

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: The apparatus comprises a lever member having a first regulator which is provided at an end of the lever member and functions as a force point, and a second regulator which is provided at another end of the lever member and functions as a movable fulcrum. An action point hole is provided between both of the ends of the lever member and is engaged with a crank pin of a crankshaft. The first regulator is connected with a piston as a reciprocal motion member, and the first and second regulators has a support member for movably supporting the force point and the movable fulcrum such that the force point and the fulcrum are movably in a lengthwise direction of the lever member.

Abstract: A transformer-coupled amplifier includes a driver transformer in which a primary winding, a secondary winding, and a tertiary winding are wound on a core of a magnetic circuit, a drive signal source for supplying an AC drive signal superposed with a drive-stage DC current to the primary winding of the driver transformer, a power tube for extracting, from the secondary winding of the driver transformer, an AC signal corresponding to the AC drive signal supplied to the primary winding of the driver transformer, and for amplifying the AC signal from the secondary winding, and a DC magnetization control power source for supplying a predetermined magnetization control current to the tertiary winding of the driver transformer so as to change a degree of DC magnetization of the core of the magnetic circuit of the driver transformer. The DC magnetized state of the core of the transformer magnetized by the DC current is appropriately changed by the magnetization control current.

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: 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.