The invention provides a jack type connector B with a thin shutter which is to be used in, for example, an IO port of a mobile terminal device such as a portable telephone, and also a plug type connector A which is to be used in combination with the jack type connector with a shutter. In the jack type connector B, a shutter which is molded by an electrically conductive resin material is accommodated in a housing in an openable and closable manner, and the shutter is always urged toward the closi...

A lever (30) can be assembled in either of two postures symmetrical with respect to an axis of symmetry (19), and the rotating direction of the lever (30) changes depending on the assembling posture. Thus, the rotating direction of the lever (30) can be selected depending on circumstances. A cam follower (52) can enter a cam groove (33) regardless of the posture in which the lever (30) is assembled. The lever (30) can be held at a standby position by a holder (21L, 21R, 22, 34, 36), and the leve...

A swash plate type compressor of variable capacity type including a rotary drive shaft, a swash plate angle adjusting device for adjusting the inclination angle between a minimum and a maximum angle, and wherein the_swash plate has a first center point at the maximum inclination angle and a second center point at the minimum inclination angle, each of the center points being an intersection between an intermediate plane of the swash plate which is intermediate in the thickness direction and a ce...

An injection locking type or MOPA type of laser device capable of always providing stable output energy and wavelength is provided. For this purpose, the laser device includes an oscillator for exciting laser gas by oscillator discharge and oscillating seed laser light with band-narrowed wavelength, an amplifier for amplifying the seed laser light by amplification discharge to emit amplified laser light, a delay circuit for setting at least one of a delay time from light emission of the seed las...

An injection locking type or MOPA type of laser device capable of always providing stable output energy and wavelength is provided. For this purpose, the laser device includes an oscillator for exciting laser gas by oscillator discharge and oscillating seed laser light with band-narrowed wavelength, an amplifier for amplifying the seed laser light by amplification discharge to emit amplified laser light, a delay circuit for setting at least one of a delay time from light emission of the seed las...

In a transmission-type screen and a projection-type display device, which are superior in contrast, a transmission-type screen characterized by including a display plane; a front side layer; and a backside layer having a light-directivity to a light projected from a direction slanted at a predetermined angle with respect to the front side layer thereof, an image being displayed on the display plane when a light is projected from a backside of the screen.

A plug-type connector has a plug-type socket, a contact holder fittable in the plug-type socket, and a cover shell engaged around the contact holder and fittable with the plug-type socket. Latch formations on the cover shell and on the contact holder secure the holder and shell together in a prelatched position with the holder only partially fitted in the shell. Thus, when the holder is fitted in the socket, the shell is to the socket and the holder is shifted in the shell into a final position ...

A keyboard is disclosed having a printed circuit board with arched contacts fastened thereto which may be deflected into contact with conductors on the printed circuit board. The arched contacts provide a snap-action when they are deflected by a key so that the user receives tactile feedback when electrical contact is made between the arched contact and the conductor on the printed circuit board. The key has a flat portion on its lower surface which is in contact with the arched conductor. On ei...

A process for the conversion of A type prostaglandins to E type prostaglandins is disclosed. Heretofore unknown prostaglandin derivatives are utilized as intermediates in the process.

A thrust bearing section (14) is constituted by one bearing end face (11f1) of a hydrodynamic type oil-impregnated sintered bearing (11) and a flange portion (13a) provided on a rotating shaft (13). The squareness between the bearing end face (11f1) and the bearing inner periphery (11h) is set within 3 .mu.m, and the squareness between the flange portion (13a) and the outer periphery of the rotating shaft (13) is set within 2 .mu.m. The bearing bore diameter d and the bearing length L of the hyd...