公开(公告)号：US5012102A

公开(公告)日：1991-04-30

申请号：US521786

申请日：1990-05-07

Applicant: David J. Gowlett

Inventor： David J. Gowlett

IPC: G01J1/02 ,  F25D9/00 ,  G01J5/02 ,  G01J5/06 ,  H01J7/18

CPC classification number: G01J5/061 ,  H01J7/18

Abstract: A device chamber (12) is evacuated by pumping via an evacuation tube (35) to produce a vacuum space in communication with a chemically-active getter (30) which is provided in the tube (35) to getter gases from the evacuated chamber (12). In accordance with the invention, the getter (30) in the form of one or more movable bodies of the getter material is activated by heating in the evacuation tube (35) at a safe location (36) distant from the chamber (12). It is then moved towards the chamber (12) and is retained in the sealed evacuation-tube outlet (31) of the device. A vacuum-permeable screen (12) in the evacuation-tube outlet (31) inhibits passage of the getter material (30) into the chamber (12) where it might, for example, otherwise damage or obscure an infrared detector element. This permits the inclusion of the getter (30) in an inexpensive manner which does not require the use of a getter unit with a support element and/or vacuum-sealed electrical connections, and is compatible with space limitations and standard device envelope requirements for infrared detectors. Furthermore, the getter (30) is activated by heating at a location which avoids damage to the device, and after moving towards the chamber (12) the evacuation tube (35) is shortened to provide a short (or even non-protruding) outlet (31) from the chamber (12).

公开(公告)号：US5008731A

公开(公告)日：1991-04-16

申请号：US483290

申请日：1990-02-16

Applicant: Robert E. J. Van De Grift ,  Martien Van Der Veen ,  Andre J. Linssen

Inventor： Robert E. J. Van De Grift ,  Martien Van Der Veen ,  Andre J. Linssen

IPC: H01L21/768 ,  H01L21/822 ,  H01L23/522 ,  H01L27/04

CPC classification number: H01L23/5222 ,  H01L2924/0002 ,  Y10S257/915

Abstract: An integrated semiconductor circuit, in which the D.C. part of the wiring containing only D.C. information lies on a part of the insulating layer located on the surface which is considerably thinner than the parts of the insulating layer under wiring parts not forming part of the D.C. wiring. Preferably, for this purpose a substrate contact diffusion connected to a reference potential is provided under the D.C. wiring parts. As a result, H.F. interference signals on the D.C. wiring are reduced so that noise and distortion are considerably reduced.

公开(公告)号：US5004989A

公开(公告)日：1991-04-02

申请号：US450338

申请日：1989-12-13

Applicant: Rudolf Hasler

Inventor： Rudolf Hasler

IPC: H03B1/00 ,  H03B5/12 ,  H03J7/02 ,  H03J7/04 ,  H04B1/26

CPC classification number: H03J7/04 ,  H03B5/1203 ,  H03B5/1231 ,  H03B5/1243 ,  H03B2201/0208

Abstract: In an oscillator (1) comprising a parallel resonant circuit (4), which for fine-tuning the oscillator includes a variable capacitance which is variable in dependence upon a fine-tuning control signal and is constituted by the capacitance occurring in the collector circuit of a transistor. This transistor is a separate transistor (12) whose collector is capacitively coupled to the parallel resonant circuit and which is arranged in common base configuration for alternating current, while its operating point is chosen to be in its saturation range, the fine-tuning control signal being applied to the base-emitter path of this transistor and the transistor base-collector junction, which is in its pass region, being driven further into conduction by this signal within its control range on the one hand, and being driven from its pass region into its cut-off region on the other hand.

Abstract translation: 在包括用于微调振荡器的并联谐振电路（4）的振荡器（1）中，包括根据微调控制信号而变化的可变电容，并且由在集电极电路中产生的电容 一个晶体管。 该晶体管是单独的晶体管（12），其集电极电容耦合到并联谐振电路，并且在其工作点被选择为处于其饱和范围内时，被布置成用于交流电的共同基极配置，微调控制信号 被施加到该晶体管的基极 - 发射极路径，并且在其通过区域中的晶体管基极 - 集电极结一方面被该信号驱动进一步被该信号传导，并且从其通过区域 另一方面进入其截止地区。

公开(公告)号：US4993152A

公开(公告)日：1991-02-19

申请号：US462683

申请日：1990-01-09

Applicant: Hans Deubler

Inventor： Hans Deubler

IPC: B26B19/28 ,  B26B19/00 ,  B26B19/04

CPC classification number: B26B19/04

Abstract: In a dry-shaving apparatus comprising a cutter (10) which is resiliently urged against an arcuate shear foil (5) and which is reciprocatingly drivable by a swing lever (17) which is pivotable about an axis (23) and which is offset relative to its plane of reciprocation (37), which cutter is connected to a drive member (24) so as to be pivotable about an axis (33) transverse to the plane of reciprocation (30) of the driving end (18) of the swing lever (17), which drive member is arranged on the driving end (18) of the swing lever (17) so as to be axially movable relative to said end and so as to be pivotable relative thereto, the axis (33) about which the cutter (10) is pivotably connected to the drive member (24) extends parallel to the axis (23) about which the offset swing lever (17) is pivotable.

Abstract translation: 在包括切割器（10）的干燥剃须设备中，所述切割器弹性地推靠在弓形剪切箔（5）上并且能够通过摆动杆（17）往复驱动，所述摆动杆可围绕轴线（23）枢转并相对于 到所述往复运动平面（37），所述切割器连接到驱动构件（24），以便绕横向于摆动驱动端（18）的往复运动平面（30）的轴线（33）枢转 杠杆（17），该驱动构件布置在摆动杆（17）的驱动端（18）上，以能够相对于所述端部轴向移动并且能够相对于其枢转，所述轴线（33）围绕其 刀具（10）可枢转地连接到驱动构件（24），该驱动构件（24）平行于轴（23）延伸，偏置摆动杆（17）围绕该轴线枢转。

公开(公告)号：US4991399A

公开(公告)日：1991-02-12

申请号：US280614

申请日：1988-12-05

Applicant: Henri Bourcier ,  Marc Pochard

Inventor： Henri Bourcier ,  Marc Pochard

IPC: G12B15/06 ,  F25B21/02

CPC classification number: F25B21/02

Abstract: A device for temporarily overcooling a detector (1) cooled permanently in a space by means of a first cooler (5).According to the invention, a second cooler (6) is temporarily made operative to produce the required overcooling without causing heat exchange with the outside. For this purpose, the thermal energy dissipated by the cooler (6) is absorbed by the passage from solid to liquid of a material changing in phase (7) (water or tetradecane) arranged between the first and second coolers.

Abstract translation: 一种用于暂时过冷却通过第一冷却器（5）在空间中永久冷却的检测器（1）的装置。 根据本发明，第二冷却器（6）暂时操作以产生所需的过冷却而不会与外部发生热交换。 为此，由冷却器（6）消散的热能由布置在第一和第二冷却器之间的相（7）（水或十四烷）变化的材料从固体到液体的通道吸收。

公开(公告)号：US4987336A

公开(公告)日：1991-01-22

申请号：US62923

申请日：1987-06-16

Applicant: Pierre L'Hermite ,  Michel Vergne ,  Alain Escapoulade

Inventor： Pierre L'Hermite ,  Michel Vergne ,  Alain Escapoulade

IPC: H01H37/76 ,  H01H61/02 ,  H01J9/12 ,  H01J43/10 ,  H01J43/30

CPC classification number: H01J9/12 ,  H01H61/02

Abstract: A reversible short circuit device in the form of a metal loop. The metal loop has a first base side which forms a first contact. Extending from the base side are second and third generally parallel sides. The second side includes a contact portion for engagement with an external object to provide an electrical connection therewith. The second and their sides are connected by a frangible fourth connection side. One of the second and third sides is subject to a recoiling force, which, when the connection side is interrupted or broken displaces the contact portion of the second side so as to reverse the short circuit. The short circuit device has particular application to photoelectric tubes to provide a means for interconnection of the tube components during manufacture, which may subsequently be reliably disconnected.

Abstract translation: 金属回路形式的可逆短路装置。 金属环具有形成第一接触的第一基极侧。 从基部侧延伸的是第二和第三大致平行的侧面。 第二侧包括用于与外部物体接合以提供与其的电连接的接触部分。 第二个和第二个方面是由一个脆弱的第四连接端连接起来的。 第二和第三侧中的一个受到反冲力，当连接侧被中断或断开时，使第二侧的接触部分发生位移以使短路反向。 短路装置特别适用于光电管，以在制造期间提供用于连接管部件的装置，其随后可以可靠地断开。

公开(公告)号：US4986620A

公开(公告)日：1991-01-22

申请号：US49621

申请日：1987-05-13

Applicant: Adrianus P. Severijns ,  Petrus J. W. Severin ,  Cornelus H. M. Van Bommel

Inventor： Adrianus P. Severijns ,  Petrus J. W. Severin ,  Cornelus H. M. Van Bommel

IPC: C03B37/028 ,  G02B6/04 ,  G02B6/28 ,  G02B6/287 ,  G02B6/38 ,  G02B6/40

CPC classification number: G02B6/2808 ,  C03B37/028 ,  G02B6/2856 ,  G02B6/403 ,  C03B2203/10 ,  G02B6/3863

Abstract: A passive fiber optic component, in which two or more fibers are each bared at one end by removal of the outer coating of the fiber. The bare portions of the fibers are etched to produce cylindrical end portion which adjoins a conical portion. Subsequently, the fibers are arranged with their etched portions in a capillary tube which is sealed at one end. The tube is then evacuated and is fused with the etched portions of the fibers to form a solid rod with a rotationally symmetric distribution of the end portions of the fibers. The fibers are etched to such a diameter that after fusion of the fibers with the tube, the fused fiber ends have a circular cross-section substantially equal to the cross-section of a single fiber core. An end face is formed on the rod by cleaving or by grinding, and by polishing to obtain a fused fiber head. The fiber head forms a fiber optic component itself, or forms a basic element for a great number of fiber optic components such as splitters and couplers.

公开(公告)号：US4985642A

公开(公告)日：1991-01-15

申请号：US284205

申请日：1988-12-14

Applicant: Patrice Gamand

Inventor： Patrice Gamand

IPC: H03F3/193 ,  H03F3/60

CPC classification number: H03F3/601 ,  H03F3/607

Abstract: A high-frequency circuit includes a field-effect transistor having a gate electrode for receiving a high-frequency input signal, a source electrode and a drain electrode. Substantial improvements in both maximum gain and high-frequency performance are achieved by providing an input or output terminal at one end of each electrode, and terminating at least one of the electrodes with an appropriate impedance at its second end.

Abstract translation: 高频电路包括具有用于接收高频输入信号的栅电极，源电极和漏电极的场效应晶体管。 通过在每个电极的一端提供输入或输出端子，并在其第二端端接至少一个具有适当阻抗的电极来实现最大增益和高频性能的显着改善。

公开(公告)号：US4983005A

公开(公告)日：1991-01-08

申请号：US373378

申请日：1989-06-28

Applicant: Remi Gamonal

Inventor： Remi Gamonal

IPC: G02B6/126 ,  G02B6/13 ,  G02B6/34 ,  H01L27/14

CPC classification number: G02B6/13 ,  G02B6/126

Abstract: An optoelectronic integrated semiconductor device including a separator of the polarizations TE and TM, this separator comprising two parallel and monomode optical guides G.sub.1 and G.sub.2, one of which receives at the input a luminous signal, and comprising means for carrying out the separation of this signal and its two components TE and TM, one of which TE is transported to the output through one of the guides and the other component TM is transported to the output through the other guide, characterized in that:the guides are formed by at least a heterostructure S/C.sub.1 and by two parallel erected guiding ribbons R at the surface,and the means for carrying out the separation of the components TE and TM consist of a matallic layer extending between the guiding ribbons at the surface of the structure over a length D, whose value is connected with the coupling length of the component TE by the relationD=L.sub.c (TE), the parameters of the physical quantities of the device being chosen so that the relationL.sub.c (TE)=2L.sub.c (TM), is satisfied

Abstract translation: 一种包括极化TE和TM分离器的光电集成半导体器件，该分离器包括两个平行和单模光导G1和G2，其中之一在输入端接收发光信号，并且包括用于执行该信号的分离的装置 并且其两个部件TE和TM，其中一个TE通过一个引导件和另一个部件TM传送到输出，通过另一个引导件传送到输出，其特征在于：引导件至少由异质结构 S / C1和两个平行竖立的引导带R在表面，并且用于执行部件TE和TM的分离的装置由在结构的表面上的引导带之间延伸长度D的非金属层组成， 其值与组件TE的耦合长度相关联，具有关系D = Lc（TE），所选择的设备的物理量的参数使得re lC（TE）= 2Lc（TM）

公开(公告)号：US4970469A

公开(公告)日：1990-11-13

申请号：US411795

申请日：1989-09-25

Applicant: Wolfdietrich G. Kasperkovitz

Inventor： Wolfdietrich G. Kasperkovitz

IPC: G01R25/00 ,  H03D3/00 ,  H03D3/22 ,  H03D13/00

CPC classification number: H03D3/007 ,  H03D13/007 ,  H03D3/22 ,  H03D2200/0082

Abstract: Phase detector having a first input for an angle-modulated input carrier to be detected, and a second input for a reference carrier having a phase shift which is dependent on the angle modulation with respect to the input carrier, the input and reference carriers being at least multiplied in the phase detector, and a frequency demodulator including such a phase detector. In order to inhibit signal distortion and notably second-order interference products in the demodulation of an angle-modulated input carrier, the phase detector according to the invention is adapted to derive an in-phase carrier A and a phase quadrature carrier B from the input carrier and to derive an in-phase carrier C and a phase quadrature carrier D from the reference carrier which has a phase which, at an average, is equal or opposite to that of the input carrier, while the phase detector is further adapted to supply from its output a signal which substantially corresponds to AC-BD.