摘要:
There are presented new diphenyl ether derivatives having a substituent selected from a halogen atom, a trifluoromethyl group and a methoxy group at the 4-position in one phenyl moiety, having optionally also halo-substituents at the 2- and 6-positions, and having a nitro group at the 4'-position and a substituent selected from an unsubstituted or substituted (1,3-dioxorane-4-yl)methoxy group, an unsubstituted or substituted (1,3-dioxa-5-cyclohexyloxy) group and an alkyl- or (substituted)amino-sulfonyloxy group at the 3'-position in the other phenyl moiety. They exhibit improved herbicidal effects on various weeds without any adverse phytotoxic effect on crops, e.g. rice seedlings.
摘要:
In a multiple electron beam type flat picture image display apparatus, the disposition of the electrode is improved to the following order:linear cathode 14, first deflection electrodes 17 for vertical deflection, control electrodes 23 for control of electron beam density, second deflection electrodes 26 for horizontal deflection, acceleration electrodes 28 and an anode 31 of thin metal film formed on the back face (on the inner face) of phosphor screen 30.Thus, by isolating the vertical deflection electrodes 17 and the horizontal deflection electrode by the control electrodes 23 disposed in between, and by disposing acceleration electrodes 28 at the final stage of electron beam paths, the distortion of image and smallness of spots are improved and vertical deflection energy becomes smaller.
摘要:
An oxide-coated cathode used for the electron tubes such as cathode ray tubes and camera tubes, comprising as the base a sintered product principally composed of an alkaline earth metal compound and a high-melting-point metal and having high heat conductivity and low specific resistance, said sintered product being either used singly or layered on a high-melting-point metal body containing a reducible element or elements as impurity, and an oxide cathode material coated on said base, and a method of producing such oxide-coated cathode.
摘要:
In a shutter control device provided with shutter blades pivoted on a 1st base-plate with film exposure opening, a control mechanism provided on the side of the opening of said 1st base-plate, a 2nd base-plate having a supporting flat surface disposed with said control mechanism thereon, and an auxiliary base-plate covering said control mechanism disposed on said 2nd base-plate. At least one of the 1st and 2nd base plates is comprised of synthetic resin.
摘要:
A camera shutter equipped with a selftimer device has an interlocking member for coordinating the movement of the camera operating member and the selftimer device to obtain accurate operation of the shutter release member. The interlocking member has a first arm which engages with the operating member during movement thereof at the beginning portion of the shutter release motion and the operating member thereafter drives the interlocking member to a position in which the interlocking member actuates the selftimer device to initiate a timing operation. Near the end of the timing operation, the selftimer device engages with a second arm of the interlocking member and thereafter drives the interlocking member to another position during the course of which a translating lever mounted on the interlocking member actuates the shutter release member to initiate release of the shutter.
摘要:
A camera shutter mechanism including an actuating lever for actuating the mechanism, a biasing spring biasing the actuating lever to operate, and a hook lever for releasably holding the actuating lever against the action of the biasing spring. The actuating lever includes a pin extending outwardly therefrom, and a resilient cylindrical bushing loosely fitting around the pin, with the pin positioned so that the spring bears against the bushing to push the bushing against the pin. The pin is positioned so that structure for returning the actuating lever from a rest position to a cocked position pushes against the bushing when returning the actuating lever.
摘要:
A control device of the shutter for a camera, which is equipped with shutter blades opening and closing an opening for the exposing operation. A control member actuated by the operation of shutter release and starting an opening member begins the exposing operation at the end of said operation, and an electromagnet connected to an electronic delaying circuit adjusts the time of finishing exposure. A magnetic control lever having a magnetic portion opposing said electromagnet and formed with synthetic resin, and a spring exerting a force for separating said magnetic portion of said magnetic control lever from said electromagnet, is constructed such that a flexible portion which presses said magnetic portion on the attracting face of said electromagnet against said spring is formed of synthetic resin on the engaging portion of at least one of said magnetic control lever and said control member.
摘要:
The operating mechanism for a camera shutter comprises a pivoted actuating member for opening the shutter and a pivoted actuating member for closing the shutter. A driving spring for biasing each of the actuating members in actuating direction has one end acting on the respective actuating member and the other end supported by a ratchet wheel which is coaxial with respective actuating member so that the spring bias can be varied by rotary movement of the ratchet wheel. Spring finger portions of a spring plate which overlies the shutter operating mechanism engage the ratchet wheels to retain them in selected angular positions against the reaction forces of the respective springs. Portions of the spring plate support the spring fingers intermediate their attachment to the spring plate and their free ends engaging the respective ratchet wheels.
摘要:
An object of the present invention is to provide a simple-structured tensioner capable of consistently exhibiting the check valve function irrespective of the form of oil supply passages. The tensioner includes a plunger, a housing, a biasing unit, an oil supply passage, and a check valve. The check valve includes a plurality of valve members and a ball seat member. The ball seat member includes a plurality of oil passages and a plurality of seat parts. The check valve further includes a passage forming member having an oil inlet disposed between the plurality of oil passages and the oil supply passage.
摘要:
Provided is an exhaust purification system capable of clearing a blockage of a reducing agent injection valve caused by solidification of an aqueous urea solution soon after starting an engine and preventing degradation in exhaust purification efficiency when starting an internal combustion engine. An exhaust purification system with a DPF, a reducing agent injection valve, and an SCR catalyst in order from the exhaust upstream side includes: an operation state detecting unit capable of detecting starting and stopping of the internal combustion engine; a forced regeneration control unit which performs forced regeneration of the DPF; a condition establishment determining unit which determines whether there is a possibility of solidification of the aqueous urea solution when the operation state detecting unit detects that the internal combustion engine is stopped; a data storage unit which stores the determination result of the condition establishment determining unit as data; and a blockage-clearing control unit which controls a temperature raising unit for raising the temperature of the reducing agent injection valve so as to raise the temperature of the reducing agent injection valve based on the data when starting the internal combustion engine.