Abstract: A flow volume control device for use in a power steering system, which comprises: a casing having an inlet port, a reflux port and a delivery port; a fluid passage formed in the casing in communication with the inlet, reflux and delivery ports; fixed orifice means provided in the fluid passage to restrict the flow or pressurized fluid from the inlet port to the reflux and delivery ports; and throttle means provided in the fluid passage between the fixed orifice means and delivery port.

Abstract: A recording tape cartridge which comprises a recording tape wound in a roll on each of a pair of hubs and at least one slip sheet laid to elastically support the roll of the recording tape with a plurality of rib units, each of the rib units being composed of plurality of ribs projected from the slip sheet to form a generally hexagonal configuration in plan view.

Abstract: A bypass passage interconnects intake manifold passages and has a bypass valve disposed therein for shifting the tuning point for inertia supercharging, the bypass valve being actuatable to close and open the bypass passage by a bypass valve actuator operatively connected between the bypass valve and an accelerator-responsive lever for closing the bypass valve when the engine load increases.

Abstract: A light-shielding blade for use in a light control device, comprises a flat area and a recessed area on each face. The recessed area on one face is positioned substantially corresponding to the flat area on the other face. The light control device is for controlling a light-passing aperture and comprises a blade group composed of plural light-shielding blades movable between an extended state in which the plural blades are extended in a partially overlapping condition and a superposed state in which the plural blades are stacked in a substantially overlapping state. The blade group comprises at least a blade provided with a flat area and a recessed area on each face thereof. The recessed area on one face is positioned substantially corresponding to the flat area on the other face, and at least one of the flat areas is in overlapping contact with a neighboring blade in said extended state of the blade group.

Abstract: In order to utilize the advantage of compactness of the current-attraction type solenoid devices and the advantage of two-solenoid electric shutter of being easily linked with other mechanisms, the electric shutter has such a structure that a reciprocating shutter charging member is not returned at the completion of the shutter charging operation but returned when the first and second solenoids are energized after the picture-taking operation is initiated, and that a resetting member is retract from the moving area of the moving members of the first and second solenoids in relation to said returning motion.

Abstract: A shutter blade for focal plane shutter, in which the blade thickness is made the thinnest possible by forming a plurality of recesses throughout the whole area, except for the connecting part of the blade with a drive mechanism and the outer peripheral edge of the blade. The recesses are in the regular polygonal shape such as hexagon, square, triangle, and so forth.

Abstract: In a single lens reflex camera including a film transporting device capable of selectively effecting a wind-up mode in which a roll film wound on a first spool is taken up by a second spool after it has passed the focal plane of a phototaking lens and a rewind mode in which the film wound on the second spool is taken up by the first spool, and a mirror box for holding a reflecting mirror disposed across the light beam from the phototaking lens imaged on the focal plane and reflecting the light beam in a plane substantially orthogonal to the direction of transport of the film for pivotal movement about an axis passing through one end thereof for retraction from the light beam, the transporting device comprises drive means for selectively rotating the first and second spools in response to selection of said modes.

Abstract: A flow volume control device for a power assisted steering device having a main control valve device, whose main valve spool is movable to establish the communication of an inlet passage with a bypass passage when the flow rate of pressurized fluid supplied from an engine-driven pump to the steering device through the inlet passage and first and second throttle passages disposed in parallel relation exceeds a predetermined value. For safe driving at a high speed, an auxiliary control valve device is further provided, whose auxiliary valve spool is moved to close the second throttle passage when high-speed driving causes pressurized fluid from the pump to increase in volume, to thereby bring about a predetermined pressure drop across said inlet passage.

Abstract: A hydraulic fluid discharged from a pump is delivered to a power steering device from a supply passage through a restricted passage and a throttled passage so that as the flow through the supply passage increases in response to an increase in the number of revolutions of the pump, the flow path resistance presented by the restricted passage increases the pressure prevailing in the supply passage to cause a control spool to control the flow area of the throttled passage, thus decreasing the flow delivered to the power steering device. In this manner, a constant and invariable flow decrease characteristic can be maintained despite a loading pressure upon the power steering device, thus enhancing the stability under high speed running conditions. A mechanism to provide a variable control of the flow delivered to the power steering device is provided in a union which is fixedly mounted in one end of a bore in a pump housing.

Abstract: In a camera having a shutter device which is capable of controlling the movement of a forward shutter curtain and/or a rearward shutter curtain by electromagnetic means operatively associated with the depression of a shutter button and which is capable of controlling the movement of the two shutter curtains by mechanical means instead of the electromagnetic means, there is provided a shutter release member for operating the mechanical means. The shutter release member has an operating portion provided on the outer surface of the camera separately from the shutter button.

Abstract: A valve system in a power steering system is disclosed. It includes a spool valve which is slidably located in a valve bore for by-passing an excess fluid at high vehicular speed in response to the pressure differential across an orifice. A control rod is slidably located in the spool valve and has at the end a metering portion for maintaining a limited flow volume when the spool valve is moved to close a by-pass port with the increase of a working pressure in the power steering system.

Abstract: An electrical circuit for compensating for variations in the shutter time of the shutter mechanism in a camera which are caused by temperature variations comprises a temperature detecting circuit which generates an output voltage corresponding to the ambient temperature variation, and a control circuit which generates a compensating voltage based upon the temperature measured by the temperature detecting circuit and the known shutter time temperature characteristic of the shutter mechanism in the camera. The compensating voltage is combined with a shutter time voltage corresponding to a desired shutter time, in such a manner that the resulting voltage, which is used to control the shutter, substantially eliminates shutter time variations caused by temperature variations, thereby rendering shutter time independent of temperature.

Abstract: A spring servo type aperture control device in a camera having mounted thereon a lens comprises: an aperture mechanism including an aperture blade and determining the aperture by varying the position of said aperture blade, an aperture lever connected to said aperture mechanism and displaceable between a first position for rendering said aperture blade to an open aperture and a second position for rendering said aperture blade to a minimum aperture, and a member for biasing said aperture lever toward said second position, said aperture control device comprising: a control member engaged with said aperture lever and movable between a third position and a fourth position corresponding to said first position and said second position, respectively, a spring member storing a drive force by shutter charge and giving forth the stored drive force by shutter release, a cam member disposed between said control member and said spring member and rotatable by the drive force of said spring member upon shutter release to d

Abstract: A mirror driving device for use in a single lens reflex camera comprises a driving lever pivotally mounted to the body of the camera, a mirror pin movable integrally with the mirror, and biasing means provided on the driving lever. The mirror pin is surrounded by a bent portion provided at one end of the driving lever and two springs of the biasing means. One of the two springs has relatively strong biasing force and engages the bent portion, while the other spring has relatively weak biasing force and always biases the mirror pin in such a direction that the mirror may descend. Upon forwarding motion of the driving lever the mirror pin is moved by the end of said lever, thereby raising the mirror. Upon returning motion of said lever the mirror pin is moved by the two springs, thereby lowering the mirror. When the lever is in its original position the mirror is pressed in a viewing-focusing position solely with the biasing force of the other spring.

Abstract: Disclosed are three new active substances possessing activity in mammals for improving or curing hepatic diseases, antitumor activity upon oral administration or anti-inflammatory activity. These substances were isolated from Ganoderma lucidum (Fr.) Karst.

Abstract: In the electric shutter of a camera having a forward curtain restraining member for restraining a forward shutter curtain in charged condition, a rearward curtain restraining member for restraining a rearward shutter curtain in charged condition with the aid of the attraction of a magnet, and an anticipatory actuation member starting to move prior to the movement of the forward shutter curtain, a safety device is provided with forward curtain control means which is displaceable to a position to release the forward shutter curtain from restraint by utilizing movement of the anticipatory actuation member and which, when the magnet is unattracted, is displaceable to a position to render the forward shutter curtain unreleasable from restraint by utilizing movement of the rearward curtain restraining member.

Abstract: An electric shutter device for a focal plane shutter of a type having a notched gear to disconnect, upon completion of shutter charging, the connection between the winding system and a front curtain member to engageably stop a shutter front curtain in a state of the shutter being charged, a control member having a counterpart gear to be meshed with the notched gear, and engaged with the shutter travelling system in the rotational direction at the time of shutter charging, and becoming disengaged with the shutter travelling system in the rotational direction at the time of shutter release, a return spring on the control member, an engagement member to engageably stop the control member in a state of shutter charge, whereby at the time of shutter charging, the energizing force of the return spring is augmented by the rotation of the control member and, by the shutter release operation, the engagement of the engagement member is first released to cause the control member alone to rotationally return to its origi

Abstract: A shutter charge device for lens shutter is mountable and dismountable to a camera which has a focal plane shutter and permits lens interchangeability. The device has a camera side connector member provided on a film advance shaft, the camera having mountable thereto a lens incorporating therein a lens shutter having a shutter charge lever projected outwardly of the lens barrel. The shutter charge device comprises a charge member engageable with the shutter charge lever of the camera to displace the latter lever and charge the lens shutter, and movement transmitting means adapted to be coupled to the connector member upon mounting of the shutter charge device to the camera to transmit the movement of the connector member to the charge member during film advance operation in the camera thereby to displace the charge member to a lens shutter charging position.

Abstract: In a camera having a focal plane shutter, a light-intercepting device for preventing light from passing through the clearance between the shutter curtain and the camera body to strike the film comprises at least one pair of resilient, opaque, planar light-intercepting members each having a rectilinear edge portion at one end thereof. These members are supported either by the camera body or by a support frame separable from the camera body so that they are inclined relative to the shutter curtain with the rectilinear edge portions being parallel to the direction of movement of the shutter curtain and making line contact with one side of the shutter curtain near the opposite edges thereof. An additional pair of identical light-intercepting members may be provided for making line contact with the other side of the shutter curtain.