Abstract: A three-side cutting apparatus which cuts a carried-in book at its top, bottom and side.

Abstract: A fingertip pulse wave sensor includes a fingertip supporting base having either a nail supporting surface or a fingertip cushion supporting surface, and a slider having the other of the nail supporting surface and the fingertip cushion supporting surface. The slider is guided on the fingertip supporting base in such a manner as to be slidable in the direction in which it is moved away from or toward the fingertip supporting base. The slider is urged in the direction in which it is moved toward the fingertip supporting base by an elastic body which is capable of applying a substantially fixed amount of pressure with respect to the variations in the slide stroke in the direction in which the slider is moved away from the fingertip supporting base which occur when different fingertips are set.

Abstract: A novel polymer having repeating units of the formula: ##STR1## (wherein R.sub.1 stands for a hydrogen atom or a methyl group) is produced by polymerizing N-tetrahydrofurfuryl acrylamide or N-tetrahydrofurfuryl methacrylamide. This is a hydrophilic-hydrophobic thermally reversible type polymer.

Abstract: A valve device for preventing fuel effusion from a fuel tank, including a casing having an inlet port in the forward position and an outlet port in the rearward position for evaporated fuel, a valve body disposed in a casing so as to be movable in the direction along the axis line connecting the inlet port and the outlet port so that it can interrupt the communication between the inlet port and the outlet port, a steel ball disposed in the valve body so as to be movable rollingly in the direction of said axis, thereby moving the valve body by the rolling action. The axis is arranged so as to be slanted by a specific angle with respect to the horizontal direction of a vehicle body, thereby making it possible for the valve body not to maintain the communicaiton interruption between the inlet port and the outlet port when the fuel level variation in the fuel tank becomes remarkable.

Abstract: In an injector for intermittently injecting liquid fuel by supplying a pulse signal to an actuator for reciprocating a valve body, a method of controlling the injector comprises the steps of changing the width of the pulse signal to thereby control an open time of the injector, and also changing a voltage of the pulse signal to thereby control a stroke of the valve body.

Abstract: In an injector for intermittently injecting liquid fuel by supplying a pulse signal to an actuator and reciprocating an injector valve, a method of controlling the injector valve comprising the steps of temporarily cutting supply of a pulse signal to the actuator to suppress inertia of the injector valve and thereby stabilize opening characteristics of the valve just before full opening of the valve during an opening stroke of the valve, and temporarily supplying the pulse signal after the cutting step of the pulse signal to the actuator to suppress inertia of the injector valve and thereby stabilize closing characteristics of the valve just before full closing of the valve during a closing stroke of the valve.

Abstract: A fuel injection valve using a stacked piezoelectric ceramics displacement magnifying device as a valve actuator. The piezoelectric actuator comprises a stacked piezoelectric ceramics expandable upon application of an electric field thereto; a lever member having a base portion fixed to the central portion of the casing, an inner portion contacting with an end of the stacked piezoelectric ceramics and receiving an expansion force from the stacked piezoelectric ceramics, a fulcrum portion fixed to the base portion, and at least two outer portions adapted to be outwardly displaced when the inner portion receives the expansion force from the stacked piezoelectric ceramics; and a flexing member formed of an elastic material and connected at its both ends to the outer portions of the lever member under the condition where a central portion thereof is flexed frontwardly, the central portion of the flexing member being connected to a rear end of the valve body.

Abstract: In a light-transmission type smoke detector, a smoke chamber is composed of a disc-like block of a non-conductive material one side of which has a spiral groove and is coated with a conductive bright metal film and a casing mounted on the block, said casing having a plurality of labyrinth structure smoke entrances. An electric circuit system is placed on the other side of the disc-like block and is covered by a shield sheet. The shield sheet and the coating metal film are electrically connected to shield the electric circuit system.

Abstract: A transfer switch for differential type actuators which includes a body having an internal space, a plurality of pairs of output ports connected with the internal space for supplying pressure to a plurality of differential type actuators, a flat control plate rotatable on the output ports, passages of two routes being arranged on one surface of the control plate which are connectable selectively with the plurality of output ports, input ports connected with the individual passes, and a rotary mechanism for changing over selectively the position of the control plate, whereby the function of the differential type actuator can be exerted fully and a plurality of differential type actuators can be controlled selectively and reliably.

Abstract: An electromagnetic fluid flow control valve mechanism has a hollow slide valve linearly movable on and along a core in response to energization of a coil disposed around the slide valve for selective fluid communication between a inlet port and first and second outlet ports through a chamber in a casing. The ratio of a cross-sectional area of the inlet port to that of each of the first and second outlet ports is selected such that the chamber will develop a relatively small vacuum such as of 20 mmAg at maximum. Preferably, the ratio is 6.5 or greater. This arrangement prevents a fluid, typically air, from flowing from the second outlet port back into the chamber.

Abstract: A motor-driven proportional fluid flow control valve has a linear motor including a slide valve body slidably mounted on a hollow iron core and an electromagnetic coil wound around the iron core. After a drive circuit has been energized, a constant current is passed through the electromagnetic coil to keep the slide valve body spaced from a stop surface while cutting off fluid communication between an inlet port and an outlet port. With the slide valve body out of contact with the stop surface, the slide valve does not produce noise which would otherwise be given off due to a fluctuating current flowing, through or vibrations of, the electromagnetic coil.

Abstract: A fuel injection system comprises a thermo-sensitive element adapted to expand and contract in response to the engine temperature, a cam adapted to rotate in response to expansion and contraction of the thermo-sensitive element, a lever rotatably supported by a throttle shaft and carrying an idle switch thereon. The idle switch is maintained at on-condition through angular moment of the throttle shaft in its closed direction when an acceleration pedal is released. The lever is rotated in association with the rotation of the cam with the opening degree of the throttle valve at idling operation being controlled by the lever so as to adjust the opening degree of the throttle valve at idling operation to suit with the engine temperature.

Abstract: An electromagnetic flow control valve assembly comprising a valve body including an inlet port and a plurality of outlet ports, and a valve in said body for controlling fluid communication between the inlet port and the outlet ports; the valve including a plurality of individual passages, each of the passages being in fluid communication with a corresponding one of the outlet ports, a plurality of individual apertures, individual ones of the apertures corresponding to each of the passages for establishing fluid communication between the passages and the inlet port; a hollow iron core disposed in the valve body, an axially movable bobbin slidably mounted on the core, and a coil disposed about the bobbin for simultaneously controlling fluid flow from the inlet port through the apertures in response to electric current applied to the coil.

Abstract: An integrated valve device includes a base board means and control valve means mounted thereon for an exhaust gas purifying system. The control valve means is provided at its outer surface with a pair of fingers adapted to be inserted into openings on the base board means. The fingers engage therefore with shoulders of the openings when mounted on the base board means.

Abstract: A valve device includes a base board and a suction pressure responsive valve having two ports defined by tubular portions. The base board is composed of a pair of superimposed plates and a sealing gasket between the plates. One of the plates is formed with a pair of channels and the other with a pair of openings communicating with the channels, respectively. The sealing gasket has a pair of tubular portions disposed respectively in the openings of the base board plate with radial clearances. The tubular portions of the suction pressure responsive valve are sealingly inserted respectively into the tubular portions in the sealing gasket.

Abstract: An integrated control device has a plurality of exhaust gas control units and base board means for mounting the control units thereon. The base board means is provided with fluid passage means and port opening means communicating therewith and adapted to be mated with port means in the control units so as to establish necessary fluid communication among the control units. Thus, the arrangement of the components used in an exhaust gas cleaning system can be made compact and readily accessible.

Abstract: An altitude compensation valve assembly comprising a housing structure having a bellows and a check valve unit. The check valve unit is supported for movement between a closed position, where communication between a fluid under pressure introduced into an inlet port of the valve assembly is discommunicated from the atmosphere, and an opened position where such communication is established. The check valve unit is normally biased towards the closed position and is moved towards the opened position when the pressure introduced through the inlet port exceeds a predetermined value determined in consideration with change in a altitude in which the valve assembly is operated to compensate for reduction in pressure resulting from change in altitude.