摘要:
Electric cables insulated with a cured polyolefin and having high electrical breakdown strength are produced, in each instance, by applying, an insulating layer of polyolefin containing a curing agent onto a conductor by means of an extruder, forming and hot-curing said layer by means of a long-land die, simultaneously applying a specific forming coagent to a tapered portion of the long-land die, and cooling the resulting hot-cured insulating layer formed on the conductor in a cooling zone.
摘要:
There is provided a method of manufacturing a circuit board having a first fixed contact and a second fixed contact that extend substantially orthogonal to each other on the same surface, the life span required for the first fixed contact being longer than that required for the second fixed contact. The method includes: etching a copper foil formed on the entire surface of an insulating substrate to form the patterns of the first and second fixed contacts; polishing the surface of the insulating substrate with buff to remove an oxide film adhered to the copper foil; and sequentially forming a nickel layer having a thickness of about 1 to about 5 μm and a gold layer having a thickness of about 0.01 to about 0.5 μm on each of the first and second fixed contacts. In the method, the buffing direction is substantially aligned with a direction in which a first movable contact slides on the first fixed contact.
摘要:
An epoxy resin composition which can be used as a semiconductor encapsulating resin and in which the improvement of flame retardancy can be attained by suitably adapting a crosslinked structure itself of a cured article without using any flame retardant material and without particularly highly filling an inorganic filler. The epoxy resin composition includes an epoxy resin (A), a phenolic resin (B), an inorganic filler (C) and a curing accelerator (D), wherein a flexural modulus E (kgf/mm2) at 240±20% C of a cured article obtained by curing the composition is a value satisfying 0.015 W+4.1≦E≦0.27 W+21.8 in the case of 30≦W
摘要:
A frame synchronizer for detecting synchronizing patterns inserted at leading positions of data trains, for each data, which data trains are independent for each period, by a mechanical sensor mounted on the earth observing satellite LANDSAT is disclosed. The code synchronizer comprises a PN code generator for cyclically generating a PN code, a comparator and a counter. A receiving code train including the PN code as a synchronizing signal is applied to the PN code generator and the number of times of coincidence of the output code of the PN generator and an input code is counted. When the number of times of coincidence exceeds a preset number, it is determined that the synchronization has been obtained. A probability of wrong synchronization is minimized and the loss of image on a ground station is prevented.
摘要:
An epoxy resin composition which can be used as a semiconductor encapsulating resin and in which the improvement of flame retardancy can be attained by suitably adapting a crosslinked structure itself of a cured article without using any flame retardant material and without particularly highly filling an inorganic filler. The epoxy resin composition includes an epoxy resin (A), a phenolic resin (B), an inorganic filler (C) and a curing accelerator (D), wherein a flexural modulus E (kgf/mm2) at 240±20% C of a cured article obtained by curing the composition is a value satisfying 0.015 W+4.1≦E≦0.27 W+21.8 in the case of 30≦W
摘要翻译:可以用作半导体封装树脂的环氧树脂组合物,其中通过适当地使固化制品的交联结构本身适当地适应而不使用任何阻燃材料,并且不特别高填充无机填料可以获得阻燃性的改善。 环氧树脂组合物包括环氧树脂(A),酚醛树脂(B),无机填料(C)和固化促进剂(D),其中挠曲模量E(kgf / mm 2) )在固化组合物得到的固化制品的240±20%C下,在30 <= W <60的情况下为满足0.015W + 4.1 <= E <= 0.27W + 21.8的值,或满足0.30W 在60 <= W <= 95的情况下,-13 <= E <= 3.7W-184其中W(重量%)是固化物中无机填料(C)的含量。 该组合物的固化物在热分解或点火时形成发泡层以发挥阻燃性。
摘要:
In a collapsible steering shaft a collapse load is decreased while assuring the heat resistance of a coupling portion between an outer shaft and an inner shaft. In addition, a time during which a great collapse load is needed is also decreased. Female serration grooves on an inner surface of the outer shaft are engaged with male serration grooves on an outer surface of the inner shaft. A recess is formed on the outer surface of the inner shaft and is aligned with a root in the male serration grooves, and a steel ball is set in the recess. A part of this steel ball intrudes into a top part of a thread in the female serration grooves. A flat portion is formed by removing a part of the male serration grooves, whereby the top part crushed by the steel ball can be prevented from frictionally engaging with the male serration grooves.
摘要:
A push-button switch affording a clear click feeling, comprising a contact plate which is curved in one direction and which is formed into a movable contact by providing therein two substantially parallel slits extending in a perimetric direction, forming a movable contact portion between said two slits, and curving both side edges of said contact plate along said slits oppositely to the direction of the curvature of said movable contact portion so as to form normally-contacted contact portion; a switch body which includes first stationary contacts and a second stationary contact; and a push button; said normally-contacted contact portions of said contact plate being normally held in electrical contact with said first stationary contacts of said switch body, while said movable contact portion of said contact plate is depressed and deformed oppositely to the direction of the curvature thereof by said push button, thereby to come into electrical contact with said second stationary contact of said switch body; said contact plate including both-end joint portions which join said movable contact portion and said normally-contacted contact portions integrally, a pair of bent line portions being formed between said each joint portion and said normally-contacted contact portions, said each bent line portion defining an acute angle with respect to the slit.
摘要:
There is provided a method of manufacturing a circuit board having a first fixed contact and a second fixed contact that extend substantially orthogonal to each other on the same surface, the life span required for the first fixed contact being longer than that required for the second fixed contact. The method includes: etching a copper foil formed on the entire surface of an insulating substrate to form the patterns of the first and second fixed contacts; polishing the surface of the insulating substrate with buff to remove an oxide film adhered to the copper foil; and sequentially forming a nickel layer having a thickness of about 1 to about 5 μm and a gold layer having a thickness of about 0.01 to about 0.5 μm on each of the first and second fixed contacts. In the method, the buffing direction is substantially aligned with a direction in which a first movable contact slides on the first fixed contact.
摘要:
An epoxy resin composition which can be used as a semiconductor encapsulating resin and in which the improvement of flame retardancy can be attained by suitably adapting a crosslinked structure itself of a cured article without using any flame retardant material and without particularly highly filling an inorganic filler. The epoxy resin composition includes an epoxy resin (A), a phenolic resin (B), an inorganic filler (C) and a curing accelerator (D), wherein a flexural modulus E (kgf/mm2) at 240±20% C of a cured article obtained by curing the composition is a value satisfying 0.015 W+4.1≦E≦0.27 W+21.8 in the case of 30≦W
摘要翻译:可以用作半导体封装树脂的环氧树脂组合物,其中通过适当地使固化制品的交联结构本身适当地适应而不使用任何阻燃材料,并且不特别高填充无机填料可以获得阻燃性的改善。 环氧树脂组合物包括环氧树脂(A),酚醛树脂(B),无机填料(C)和固化促进剂(D),其中挠曲模量E(kgf / mm 2) )在固化组合物得到的固化制品的240±20%C下,在30 <= W <60的情况下为满足0.015W + 4.1 <= E <= 0.27W + 21.8的值,或满足0.30W 在60 <= W <= 95的情况下,-13 <= E <= 3.7W-184其中W(重量%)是固化物中无机填料(C)的含量。 该组合物的固化物在热分解或点火时形成发泡层以发挥阻燃性。