A CRT display device has a phosphor plane of a bulb inclined to a plane normal to a center axis of an electron gun structure and a side of the bulb facing the phosphor plane inclined to the phosphor plane. A transmissive window for passing a light from the phosphor plane to an external is formed in the side of the bulb.

A method of restraining a diffusion of tritium and an apparatus for same are disclosed. The method includes the step of disposing a hydrogen-absorbing metal in a tritium passage in a direction of diffusion of tritium so that the hydrogen-absorbing metal absorbs tritium to be diffused. The apparatus includes a hydrogen-absorbing metal surrounding a device of a fast breeder reactor. The tritium to be diffused can be readily captured. An arrangement of capturing the tritium permeating the device is…

In a magnetron device of the type wherein a magnetron tube is supported by a supporting plate and a waveguide is clamped to the magnetron tube through a metal gasket, the edge of an opening provided for the waveguide is urged against the supporting plate via the metal gasket.

The radial vanes secured to the inside of a cylindrical anode electrode are short-circuited by inner and outer strap rings which are secured to alternate vanes. The intermediate portions of the strap rings between the points at which the strap rings are secured to the vanes are projected outwardly.

In a magnetron of the type wherein magnetic flux of opposing permanent magnets is passed axially through an interaction space by way of pole pieces attached to opposing surfaces of the permanent magnets, at least one pole piece on the output side is constructed to contact the output side permanent magnet through annular contact surface.

In a magnetron wherein permanent magnets are contained in an evacuated envelope formed by an anode cylinder and yokes on the opposite ends thereof, gaskets made of relatively soft metal are interposed between the permanent magnets and component elements adjoining thereto.

A photoelectric transfer element of which a reading sensor for reading written materials such as facsimile documents has a controlled photosensitive region within the photoelectric transfer element. Thus photosensitivity in a region of the photoelectric transfer element is reduced to improve element performance. The specific photosensitivity control methods include an electric field control, increased impurity concentration, and irradiation ultraviolet light.

An auto-focusing electron microscope used for the observation, measurement and/or checking of a circuit pattern or the like comprises an objective lens capable of changing a focal position of an electron beam, an optical system for projecting a light and shade pattern having a light-permeable portion and a light-shielding portion onto the surface of a specimen through the objective lens, and a detector for detecting the projected pattern while optically reflecting it, whereby focusing can be mad…

A flow-control valve comprising a rotary valve member is moved eccentrically and which has a valve-sheet surface formed as a partial cylindrical surface and which is adapted to perform airflow control through its rotation, and two opening which are on the side of an air passage to be controlled by the rotary valve member. A length of the valve-sheet surface of the rotary valve member in the direction in which it rotates is larger than a length of the opening in the same direction, the valve memb…

A washing machine is disclosed in which water is poured on the washing within a washing and dehydrating tank through a water supply port while turning the washing and dehydrating tank slowly, to thereby cause the water to sink into the washing before the normal washing thereof so as to reduce the bulk of the washing or prevent the floating of the washing. Thus, the regular agitating and washing of the washing are well performed.