摘要:
A directional control valve for a pneumatic cylinder in which a piston of the cylinder can be lowered and elevated in a high speed with a minimum air consumption and the lowering/rising speed of the piston can be controlled before it reaches the upper/lower end portions to prevent bounding of the piston. The directional control valve includes a first pressure chamber communicating with an air supply, a second pressure chamber communicating with one of cylinder chambers divided by the piston of the cylinder, an exhaust pressure port, a pressure controlling mechanism, a pressure controlling and changing means which forms a pressure controlling chamber and a pressure receiving chamber, a first valve member for communicating the first pressure chamber and the second pressure chamber, a second valve member for communicating the second pressure chamber and an atmospheric pressure chamber, a third valve member for communicating the second pressure chamber and a pressure-receiving member, and a fourth valve member which is communicating with the third valve member, the air supply and a pressure control chamber.
摘要:
A biomaterial excellent in biocompatibility comprising a composite material of an N-acylchitosan and collagen is described. This biomaterial is suitable for used as a wound dressing material, vascular prosthesis, artificial skin or hemostatic agent.
摘要:
An output buffer circuit, in which a pair of current sources is connected to positive and negative power sources, and a first inverter having input and output terminals, is arranged between the current sources, in which a second inverter having input and output terminals, is connected to the output terminal of the first inverter, the second inverter including at least one of P-channel and N-channel MOSFETs, and a capacitor is connected between the input and output terminals of the second inverter.
摘要:
A flexible magnetic diskette used for magnetically storing various information which is recorded and read by a magnetic head. The diskette includes a flexible plastic disk sheet uniformly coated with magnetic material and having a mount hole at its center, and a holder for securing the disk sheet over the periphery of the mount hole. The holder is also made of a plastic material for holding the flexible disk sheet over the peripheral portion of the mount hole via a double-sided adhesive ring. A core member is made of a magnetic metal having a high abrasive resistance and rigidly attached to the holder over at least a part of a surface of the holder, with which a drive unit is engaged.
摘要:
In a vehicle key device, when a key is inserted into a lock, the former is magnetically coupled to the latter so that data are transmitted therebetween, and only when the data provided by the lock and key correspond with each other is the driving of the engine permitted. This device positively prevents the driving of a vehicle by an unauthorized person.
摘要:
A reproducing apparatus of a video disc player, wherein for a special reproduction such as a fast forward reproduction, or a reverse reproduction from a CLV disc, a field memory is provided for storing video signals of length of one field. A reading-in operation to the field memory is synchronized with a reproduced synchronizing signal. A writing-out operation from the field memory is synchronized with a reference synchronizing signal. A discontinuity of phase caused by a track jump is eliminated, and a stabilized picture on a TV monitor can be provided.
摘要:
A printing device such as a printer of the type using a type wheel in which a carriage is loaded with a printing mechanism and movable along a carrier to allow the printing mechanism to print out data on a paper, which is wrapped around a platen. The carrier and/or the carriage is produced by press-forming a single sheet metal to cut down the production cost and the number of structural elements of the printer.
摘要:
A cassette loading device having a cassette holding member arranged to be shiftable between a first position in which the cassette is attachable and detachable and a second position in which the cassette is stayed in a state of allowing use of a recording medium disposed within the cassette; to limit the movement of a cassette pushing member when the holding member is in the first position; and to remove the limitation when the holding member is in the second position.
摘要:
This invention relates to a method of correcting astigmatism in scanning electron microscopes and similar equipment which insures accurate correction of astigmatism simply by matching an astigmatism-correcting image, appearing on part of a Braun tube screen, to a predetermined point (such as a mark) on the screen, instead of depending on skill and perception. The apparatus for correcting astigmatism in scanning electron microscopes and similar equipment according to this invention provides a simple structure to implement the above astigmatism correcting method, connecting the X direction astigmatism correcting system through a first switch to one of the horizontal and vertical scanning systems and the Y direction astigmatism correcting system through the second switch to the other thereof.
摘要:
A food product comprising a laminar sheet material comprising two edible sheets of different swelling properties, the two edible sheets being bonded together along at least a portion of the surfaces of the sheets. At least one of the sheets is capable of swelling and being deformed in water, and the laminar sheet material is so deformed.