摘要:
The two-sided magnetic recording and reproduction device according to the present invention is very simple in structure in which a single negative pressure generating type stabilizing plate is used to achieve good contact of two magnetic heads with the front and backside of a magnetic disc, whereby position adjustment and assembly work of the individual members can be simplified to achieve a reduction in cost, the frictional resistance of the stabilizing plate to the magnetic disc can be reduced to reduce the driving torque, and abrasion to the magnetic disc and the magnetic heads can be suppressed. Furthermore, since the upper and lower heads are inclined to the inside and outside with respect to the magnetic disc, or, the surface of the stabilizing plate opposing the magnetic disc is inclined in the direction to the inner and outer peripheral sides, the gaps of the upper and lower magnetic heads are caused over their entire widths to come in sliding contact, thereby achieving a very good and stable head contact.In addition, since there is provided supporting means for elastically supporting one of the upper and lower magnetic heads, a good contact of the magnetic heads following the magnetic disc is achieved, thereby enabling stable recording and reproduction.
摘要:
A DC resistance welding apparatus includes a pair of welding electrodes for sandwiching workpieces to be welded therebetween and a circuit connected to the welding electrodes for supplying a welding current to said welding electrodes. The circuit comprises includes a plurality of parallel-connected rectifying circuits each comprising having a welding transformer and rectifying circuit. The circuit allows a large welding current to be supplied to workpieces, and makes the DC resistance welding apparatus small in size and light in weight.
摘要:
The terminal locking block is mounted to the connector housing in two steps, first in a provisional engagement condition and then in a full engagement condition. In the provisional engagement condition, a stopper formed at the rear inside of the terminal locking block stays out of terminal insertion passages, allowing terminal lugs to be inserted into the terminal accommodating chambers, in which the terminal lugs are held by resilient engagement pieces of the connector housing. When the terminal locking block is pushed down and advanced forwardly into the full engagement condition, the stopper is situated immediately behind protrusions of the terminal lugs, thus securely locking them. When it is desired to remove the terminal lugs from the connector housing, the terminal locking block is retracted to the provisional engagement condition and the resilient engagement piece is pried open by a jig to disengage the terminal lug. At this time, a restraining projection formed at the front inside of the terminal locking block prevents the resilient engagement piece from being deflected too much, thus protecting it from being broken.
摘要:
A heat transfer sheet, comprising a substrate sheet and a dye carrying layer formed on one surface of the substrate sheet, a dye included in the dye carrying layer being represented by the formula (I) shown below. ##STR1## wherein R.sub.1 to R.sub.5 each represent a hydrogen atom, an alkyl, cycloalkyl, alkenyl, alkynyl or phenyl group which may have substituents, X represents a hydrogen atom, a halogen atom, an alkyl or alkoxy group, --NHCOR or --NHSO.sub.2 R (R has the same meaning as R.sub.1).
摘要:
A composition for brazing aluminum or aluminum alloy characterized in that said composition contains aluminum alloy powder for brazing and thermoplastic acryl-based resin binder which is so volatile as to volatilize before being carbonized at a brazing temperature and said resin binder of 0.1 to 50 parts is used for aluminum alloy powder of 100 parts. When this technological idea was applied to brazing with a brazing material of aluminum alloy powder such as, for example, Al-Si, a preferable result of brazing could be obtained.
摘要:
Disclosed are a compound of the general formula ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and each represents a hydrogen atom, an alkyl group or an acyl group, process for the production thereof and use thereof. The compounds have an antitumor activity, and those wherein both of R.sub.1 and R.sub.2 represent a hydrogen atom or an acyl group are novel compounds.
摘要:
A DC/DC converter for producing a plurality of output voltages, comprising a transformer having a primary coil and a plurality of secondary coils; a switching circuit adapted to turn ON and OFF the supply of input DC voltage to the primary coil; rectifying and smoothing circuits for rectifying and smoothing the AC voltages obtained in the secondary coils; a circuit means connected in series with the rectifying and smoothing circuits to obtain the sum of the output voltages from the respective rectifying and smoothing circuits; and a control circuit adapted to receive the lowest DC output voltage from the rectifying and smoothing circuits and to control the ON - OFF operation of the switching circuit so that the lowest voltage is maintained at a constant level, and wherein the DC voltages from the respective rectifying and smoothing circuits are obtained by making use of one of the output terminals of the lowest DC voltage as a common terminal.
摘要:
A heat insulation structure for a liquefied gas storage tank is disclosed which comprises a plurality of heat insulation sandwich structure units attached to the outer tank shell. Each sandwich structure unit comprises a plurality of core members or ribs arrayed in spaced apart relation and sandwiched by a top and bottom plate members, and insulating materials filled into the spaces defined by the core members and the top and bottom plate members, and each core member or rib comprises a pair of plywood sheet members spaced apart from each other by a predetermined distance by spacers, and insulating materials filled into the space or spaces defined by the sheet members and spacers. The above construction not only gives much strength to the heat insulation structure in addition to the improved ability to interrupt heat conduction, but also reduces the fabrication cost.
摘要:
An input apparatus includes a pointing device which has a main unit and an operation unit, and a fixing unit which fixes the pointing device to a hand. The pointing device is attached to the hand via the fixing unit when the input apparatus is used. The fixing unit fixes the main unit to the thumb side or the back side of the hand when the input apparatus is attached to the hand.
摘要:
A semiconductor device includes a semiconductor substrate including an element region, an inner sealing and an outer sealing which are formed on the element region and have a first opening part and a second opening part, respectively, a multilayer interconnection structure which is formed on the substrate and stacks multiple inter-layer insulation films each including a wiring layer, a moisture resistant film formed between a first inter-layer insulation film and a second inter-layer insulation film which are included in the multilayer interconnection structure, a first portion which extended from a first side of the moisture resistant film and passes the first opening part, a second portion which extended from a second side of the moisture resistant film and passes through the second opening part, and a wiring pattern including a via plug which penetrates the moisture resistant film and connects the first portion and the second portion.