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1.发明授权Miscible thermoplastic polymeric blend compositions containing polyamide/amorphous polyamide blends 失效含有聚酰胺/无定形聚酰胺共混物的混溶热塑性聚合物共混组合
公开(公告)号：US5391640A
公开(公告)日：1995-02-21
申请号：US169719
申请日：1993-12-17
摘要： Thermoplastic polymeric composition which feature good physical properties which are relatively insensitive to humidity and further exhibits good barrier properties of the composition comprise:(A) a first conventional polyamide, and(B) an amorphous copolyamide which is polymerized from(B.sub.1) a polyamide forming monomer selected from the group consisting of lactams, aminoalkanoic acids and mixture thereof wherein the monomer is present in a molar proportion of between about 0 and 50%,(B.sub.2) a diamine selected from the group consisting of aralkylene diamines, cycloalkylene diamines and mixtures thereof, the diamine being present in a molar proportion of between about 25 and 60%,(B.sub.3) a dicarboxylic acid selected from the group of an aromatic dicarboxylic acid, aralkylene dicarboxylic acids, and aliphatic dicarboxylic acids; preferably the use of an aliphatic dicarboxylic acid in conjunction with an aromatic dicarboxylic acid is preferred, at least one aromatic diacid, the dicarboxylic acid being present in a molar proportion of between about 25 and 60%,wherein the (A) and (B) are substantially miscible when formed into a blend composition.The blend composition finds use as a molding composition, as well as a film forming composition, alternately, may be formed into a variety of articles which exhibit improved physical properties.
摘要翻译： 具有良好物理性质的热塑性聚合物组合物，其对湿度相对不敏感且进一步表现出良好的组合物的阻隔性能包括：（A）第一常规聚酰胺和（B）无定形共聚酰胺，其由（B1）聚酰胺形成 选自内酰胺，氨基链烷酸及其混合物的单体，其中单体以约0至50％的摩尔比例存在，（B2）选自亚芳基二胺，亚环烷基二胺及其混合物的二胺 ，二胺以约25至60％的摩尔比例存在，（B3）选自芳族二羧酸，亚芳基二羧酸和脂族二羧酸的二羧酸; 优选使用脂族二羧酸与芳族二羧酸结合使用，至少一种芳族二酸，二羧酸的摩尔比例为约25至60％，其中（A）和（B） 当形成共混组合物时，基本上是可混溶的。 共混组合物可用作模塑组合物，以及成膜组合物，或者可以形成为表现出改善的物理性能的各种制品。
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公开(公告)号：US5010255A
公开(公告)日：1991-04-23
申请号：US461510
申请日：1990-01-05
申请人： Mohamed A. Hilal , Jerome F. Parmer
发明人： Mohamed A. Hilal , Jerome F. Parmer
摘要： A disk type magnetohydrodynamic (MHD) generator/channel and a hybrid pulse power transformer (HPPT) with a superconductive primary and a normal secondary for producing high power and high current pulses is disclosed. The HPPT surrounds the MHD channel through which hot gas is supplied. The channel upstream from the HPPT is formed into a flat circular configuration with narrow portion directed perpendicular to the channel passing through the HPPT. A MHD disk generator is positioned on the opposite side of the channel directly opposed from the HPPT. The output from the MHD is connected to the primary of the HPPT. Prior to generating power, the superconducting primary winding of the HPPT is charged to a low current. The primary is then connected to the MHD generator/channel for conditioning. When the channel is fired causing gases to flow through the channel causing the magnet current to increase producing a higher primary field and hence more power generation. In this manner the MHD generator is self excited or conditioned and the MHD generator output is stored in the HPPT primary. The energy stored in the primary can be released to the secondary by driving the primary normal by any known method. Other configurations can be used such as conventional MHD channel generators. The primary winding can be made of high temperature superconductors when available.
摘要翻译： 公开了一种盘式磁流体动力学（MHD）发生器/通道以及具有超导初级和一级次级的混合脉冲功率变压器（HPPT），用于产生高功率和高电流脉冲。 HPPT包围供应热气体的MHD通道。 HPPT上游的通道形成为平坦的圆形构造，其中窄部分垂直于通过HPPT的通道。 MHD磁盘发生器位于与HPPT直接相对的通道的相对侧。 MHD的输出连接到HPPT的主输出端。 在发电之前，将HPPT的超导初级绕组充电至低电流。 然后主要连接到MHD发生器/通道进行调理。 当通道被燃烧时，气体流过通道，导致磁体电流增加，从而产生较高的初级场，从而产生更多的发电。 以这种方式，MHD发生器是自激的或调节的，并且MHD发生器输出存储在HPPT初级中。 存储在初级中的能量可以通过任何已知方法驱动初级法线而释放到次级。 可以使用其他配置，例如常规MHD通道发生器。 初级绕组可以由高温超导体制成。
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公开(公告)号：US5173568A
公开(公告)日：1992-12-22
申请号：US563654
申请日：1990-08-06
申请人： Jerome F. Parmer
发明人： Jerome F. Parmer
IPC分类号： F41B6/00
CPC分类号： F41B6/006 , Y10S505/876
摘要： A magnetic gun for the purpose of accelerating a metal clad projectile to high velocities which includes a long dipole magnet extending the length of the gun bore that encloses a plurality of short superconducting dipoles magnets along its length. The short dipoles are superconducting dipoles whose induced current and magnetic field oppose the current and magnetic field of the long dipole. The short dipoles while in a superconducting state prevent the long dipole field from entering the gun bore. When the short dipoles become normal conducting, the current in the short dipoles decay rapidly. When this occurs the field of each of the small dipoles collapse and magnetic flux from the long dipole enters the gun bore at the locaiton of the normal conducting small dipole. This entering flux repels the projectile down the barrel in the direction of least flux, so the projectile is moved to the next short dipole section. This process is repeated in the next section and sequentially down the gun bore so that the projectile is accelerated along the length of the bore and exits therefrom at launch speed.
摘要翻译： 用于将金属包覆弹丸加速到高速度的磁性枪，其包括长的偶极子磁体，其延伸沿其长度包围多个短的超导偶极子磁体的枪孔的长度。 短偶极子是超导偶极子，其感应电流和磁场与长偶极子的电流和磁场相反。 在超导状态下的短偶极子阻止长偶极场进入枪孔。 当短偶极子变得正常导通时，短偶极子中的电流迅速衰减。 当这种情况发生时，每个小偶极子的场崩溃，并且来自长偶极子的磁通量在正常导电小偶极子的位置进入枪孔。 这种进入的助焊剂将弹丸沿着最小通量的方向击退炮弹，使弹丸移动到下一个短的偶极子部分。 该过程在下一部分中重复并且顺序地沿着喷枪孔向下延伸，使得射弹沿着孔的长度加速并且以发射速度从其中离开。
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公开(公告)号：US4894556A
公开(公告)日：1990-01-16
申请号：US061761
申请日：1987-06-15
IPC分类号： H01F36/00
CPC分类号： H01F36/00 , Y02E40/66 , Y10S336/01 , Y10S505/87 , Y10S505/884
摘要： A pulsed transformer utilizing the transition of the primary winding from a superconducting state to a normal state to increase the efficiency of energy transfer to the secondary winding thereof and hence to a load across the secondary winding. The primary winding is constructed as a composite which has minimal resistance when in a superconductive state and significantly higher resistance when in a normal or critical state.
摘要翻译： 利用初级绕组从超导状态到正常状态的脉冲变压器，以增加能量传递到次级绕组的效率，从而提高到次级绕组的负载。 初级绕组被构造为当处于超导状态时具有最小电阻并且在正常或临界状态下具有显着更高电阻的复合材料。
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公开(公告)号：US4262293A
公开(公告)日：1981-04-14
申请号：US950463
申请日：1978-10-11
申请人： Jerome F. Parmer
发明人： Jerome F. Parmer
摘要： A log periodic VEE antenna particularly useful for space craft including a central mast and dipole antenna elements which are collapsible into a compact configuration for transportation purposes and which are deployable in spring-like fashion when released from their confinement. In one embodiment, the antenna elements themselves are semi-circular elements and confined in a bent position in a suitable container for transportation and which, when removed from the container, spring into deployed position. In another embodiment, the dipole elements are flexible wire with a spine member having a semi-circular spring member bent when the antenna is collapsed and which, when released from its confinement deploys the wire elements. The semi-circular elements besides having a deployment function also give rigidity to the antenna when deployed.
摘要翻译： 特别适用于航天飞机的对数周期性VEE天线，包括中央桅杆和偶极天线元件，其可折叠成用于运输目的的紧凑配置，并且当从其限制释放时以弹簧状方式部署。 在一个实施例中，天线元件本身是半圆形元件，并且被限制在用于运输的合适容器中的弯曲位置，并且当从容器移除弹簧到展开位置时。 在另一个实施例中，偶极元件是柔性线，其中脊柱构件具有当天线塌陷时弯曲的半圆形弹簧构件，并且当从其限制释放时，部署线元件。 除了具有展开功能之外，半圆形元件在展开时也为天线赋予刚度。
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公开(公告)号：US4187387A
公开(公告)日：1980-02-05
申请号：US15270
申请日：1979-02-26
申请人： Jerome F. Parmer
发明人： Jerome F. Parmer
CPC分类号： H01B12/02 , H01B5/02 , Y02E40/641 , Y10S505/885
摘要： An electrical lead for cryogenic devices wherein a perforated conductive ribbon is folded in serpentine folds and fitted within an insulated vent. Boil-off gas is passed through the perforations in a heat exchange relationship with said conductive ribbon.
摘要翻译： 用于低温装置的电引线，其中穿孔导电带折叠成蛇形折叠并且装配在隔热通风口内。 蒸发气体与所述导电带以热交换关系通过穿孔。
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公开(公告)号：US4789349A
公开(公告)日：1988-12-06
申请号：US10662
申请日：1987-02-04
申请人： Jerome F. Parmer
发明人： Jerome F. Parmer
CPC分类号： H01R4/182 , H01R4/62 , Y10S174/08 , Y10S439/932 , Y10T403/655
摘要： A joint assembly for holding electrical conductors together comprises a connector which loosely engages the conductors when the assembly is subjected to relatively high temperatures. The connector is made of a material which has a sufficiently higher coefficient of expansion then the coefficient of expansion the material used for the electrical conductors in order to cause a differential shrinkage of the connector onto the conductors for a clamping engagement therebetween when the assembly is subjected to relatively low temperatures.
摘要翻译： 用于将电导体保持在一起的接头组件包括当组件经受较高温度时松动地接合导体的连接器。 连接器由具有足够高的膨胀系数的材料制成，然后是用于电导体的材料的膨胀系数，以便当组件经受时，连接器在导体上的不均匀收缩以夹紧接合 到相对较低的温度。
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