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1. 发明授权

US3919883A Method and apparatus for detecting progressive cracks in materials 失效
标题翻译：检测材料中渐进裂纹的方法和装置
公开(公告)号：US3919883A
公开(公告)日：1975-11-18
申请号：US44811574
申请日：1974-03-05
申请人： GEN DYNAMICS CORP
发明人： NAKAMURA YOSIO , VEACH CHARLEY L
IPC分类号： G01H1/00 , G01N29/14
CPC分类号： G01N29/14 , G01H1/00
摘要： An acoustic emission monitoring technique for detecting the growth or formation of cracks or other flaws in structures is disclosed. A growing crack emits acoustic signals which can be detected by an appropriate sensor on the structure surface. It has been found that the rate of amplitude buildup decreases as distance from a sensor to the site of the acoustic event increases. Thus it is possible by selecting only acoustic signals which have at least a selected build-up rate, to eliminate most background noise and other signals originating further than selected distance from the sensor. Thus, the formation and growth of cracks in the selected area can be accurately monitored in an acoustically noisy environment.
摘要翻译：公开了一种用于检测结构中裂纹或其他缺陷的生长或形成的声发射监测技术。越来越多的裂纹发出可以由结构表面上的适当传感器检测到的声信号。已经发现，随着距离传感器到声学事件的位置的距离增加，振幅积累的速率减小。因此，可以通过仅选择至少具有所选积累速率的声信号来消除大多数背景噪声和源自距离传感器的选定距离更远的其它信号。因此，可以在声学噪声环境中精确地监测所选区域中的裂纹的形成和生长。

2. 发明授权

US3897730A Penetrating spear with suspended warhead 失效
标题翻译：用悬挂弹头穿透矛
公开(公告)号：US3897730A
公开(公告)日：1975-08-05
申请号：US37212673
申请日：1973-06-21
申请人： GEN DYNAMICS CORP
发明人： RIPARBELLI CARLO
IPC分类号： F42B12/06 , F42B12/16 , F42B15/00 , F42B13/28
CPC分类号： F42B12/06 , F42B12/16 , F42B15/00
摘要： Disclosed is a spear having an elongated rod or stem to penetrate hard targets. A warhead is suspended directly behind the stem.
摘要翻译：公开了一种具有细长棒或杆以穿透硬目标的矛。弹头直接悬挂在阀杆的后面。

3. 发明授权

US3896545A Method of making a molded waveguide filter with integral tuning posts 失效
标题翻译：制造具有整体调谐柱的模制波导滤波器的方法
公开(公告)号：US3896545A
公开(公告)日：1975-07-29
申请号：US49469374
申请日：1974-08-05
申请人： GEN DYNAMICS CORP
发明人： MACTURK WILLIAM L
IPC分类号： H01P1/211 , H01P11/00
CPC分类号： H01P11/007 , H01P1/211 , Y10T29/49016
摘要： A method for molding a waveguide filter having integral tuning posts.
摘要翻译：一种用于模制具有整体调谐柱的波导滤波器的方法。

4. 发明授权

US3875645A Fairing tool 失效
标题翻译：公平的工具
公开(公告)号：US3875645A
公开(公告)日：1975-04-08
申请号：US41568573
申请日：1973-11-14
申请人： GEN DYNAMICS CORP
发明人： TUCKER ROY G , BILLARD RUSSELL G
IPC分类号： B23K37/04
CPC分类号： B23K37/0408 , Y10T29/53878 , Y10T29/53913
摘要： A fairing tool for aligning plates preparatory to welding comprising a main body proportioned to span a predetermined distance between plates and having a passageway therethrough, handle means having a portion slidably disposed in the passageway and a head at the front end thereof which is narrower than the predetermined distance but when rotated 90.degree. will span that predetermined distance. A nut engages threads on the handle means for drawing the head toward the main body and thereby forces the plate edges into planar alignment. The main body is threaded and carries a large nut which can be used to extract the tool if needed.

5. 发明授权

US3862477A Poling process for linear piezoelectric strain transducers 失效
标题翻译：线性压电应变传感器的抛光过程
公开(公告)号：US3862477A
公开(公告)日：1975-01-28
申请号：US38909873
申请日：1973-08-16
申请人： GEN DYNAMICS CORP
发明人： AYERS WESTON D , HIRSCH JOSEPH G
IPC分类号： G08B13/20 , G08G1/01 , H01B13/016 , H01L41/087 , B01J17/00
CPC分类号： G08G1/01 , G08B13/20 , H01B13/0167 , H01L41/087 , Y10S310/80 , Y10T29/42
摘要： A process for producing sufficient piezoelectric effect in plastic dielectric coaxial cable to obtain a highly sensitive linear strain transducer. The process combines a selected soak temperature profile with the application of high voltage DC to maximize sensitivity and uniformity. The plastic dielectric material exhibits a high level of piezoelectric activity when processed according to the invention so that, for example, the cable is sensitive to the passage of humans or vehicles when buried in the ground.
摘要翻译：在塑料电介质同轴电缆中产生足够的压电效应以获得高灵敏度的线性应变传感器的方法。该过程将所选择的浸泡温度曲线与高压DC的应用相结合，以最大化灵敏度和均匀性。当根据本发明进行处理时，塑料介电材料表现出高水平的压电活性，使得例如当电缆埋入地下时，电缆对人或车辆的通过敏感。

6. 发明授权

US3862047A Method and composition for detecting flaws in metallic surfaces, holes and otherwise 失效
标题翻译：用于检测金属表面，孔和其他材料的方法和组合物
公开(公告)号：US3862047A
公开(公告)日：1975-01-21
申请号：US24789372
申请日：1972-04-26
申请人： GEN DYNAMICS CORP
发明人： WELTMAN HENRY J , CARROLL MARK T , HALKIAS JOHN E , KAARLELA WILLIAM T , REYNOLDS JACK D
IPC分类号： G01N27/84 , H01J1/28
CPC分类号： G01N27/84 , G01N15/0656
摘要： A procedure for examining and inspecting drilled holes or other metal surface conformations by applying a castable, two component, magnetically active material comprised of room temperature vulcanizing rubber or a polymerizing material containing magnetizable particles and specific sensitizing agents, magnetizing the area to be inspected, and curing the castable material to form a permanent replica impression of the inspection area which, when removed, reveals the presence of surface flaws, such as cracks, scratches, tool marks or dimensional inaccuracies and subsurface flaws which may tend to develop in structurally deficient members.
摘要翻译：通过应用由室温硫化橡胶或包含可磁化颗粒和特定敏化剂的聚合材料组成的可铸塑的两组分的磁性活性材料来磁化待检查的区域，以及用于检查和检查钻孔或其它金属表面构造的步骤固化可浇铸材料以形成检查区域的永久复制印模，当被去除时，其可以揭示在结构缺陷的构件中可能趋于发展的表面缺陷，例如裂纹，划痕，工具痕迹或尺寸不准确性以及地下缺陷的存在。

7. 发明授权

US3861839A Diffusion molding apparatus 失效
标题翻译：扩散成型设备
公开(公告)号：US3861839A
公开(公告)日：1975-01-21
申请号：US41404473
申请日：1973-11-08
申请人： GEN DYNAMICS CORP
发明人： MALIK RAJ K
IPC分类号： B22F3/00 , B29C3/00 , B30B11/00
CPC分类号： B22F3/00
摘要： An improved diffusion molding apparatus and a process using it are disclosed. Particles of suitable metal alloys such as titanium are placed in a mold comprising a surrounding toroidal yoke and unidirectionally movable rams. The mold is encapsulated and evacuated, then the particles are consolidated through high ram pressure while the mold is at a temperature up to about 75*F below the alpha-beta transition temperature for titanium alloys. Preferred process steps and mold configurations are disclosed. The resulting parts have densities as high as 99.5 percent of wrought metal and excellent grain structure and physical and mechanical properties.
摘要翻译：公开了一种改进的扩散成型装置及其使用方法。将合适的金属合金如钛的颗粒放置在包含环绕的环形轭和单向可移动的公柱的模具中。将模具密封并抽空，然后通过高压力压力将颗粒固结，同时模具处于低于钛合金的α-β转变温度约75°F的温度。公开了优选的工艺步骤和模具配置。所得到的部件具有高达锻造金属的99.5％的密度和优异的晶粒结构以及物理机械性能。

8. 发明授权

US3855692A Method of manufacturing circuit board connectors 失效
标题翻译：制造电路板连接器的方法
公开(公告)号：US3855692A
公开(公告)日：1974-12-24
申请号：US37474773
申请日：1973-06-28
申请人： GEN DYNAMICS CORP
发明人： DUGAN W
IPC分类号： H05K3/42 , H05K3/00
CPC分类号： H05K3/42 , Y10T29/49165
摘要： Disclosed is a method of manufacturing a ''''unitube'''' circuit board, that is, a single or multi-layer circuit board having a plurality of tubes, in continuity with the circuit or circuits, projecting from the board for the connection of electronic component leads.
摘要翻译：公开了一种制造“单元管”电路板的方法，即具有与电路连接的多个管的单层或多层电路板，从电路板突出以连接电子元件引线。

9. 发明授权

US3854083A Millimeter wave mixer 失效
标题翻译： MILLIMETER WAVE MIXER
公开(公告)号：US3854083A
公开(公告)日：1974-12-10
申请号：US40537573
申请日：1973-10-11
申请人： GEN DYNAMICS CORP
发明人： HULDERMAN G , LADER L , WINDERMAN J
IPC分类号： H01P5/20 , H03D9/06 , H01P5/12
CPC分类号： H03D9/0616 , H01P5/20
摘要： A millimetric mixer package is fabricated in block construction manner of inexpensive lightweight materials such as plastics, after which the surfaces to be conductive are gold-plated. An integral collection box forms a part of the package, for the disposition of a circuit board and other elements in the output end of the mixer. The mixer provides a hybrid junction of magic T type for 2 millimeter wave inputs, one of which may be a local oscillator, the junction being coupled by way of a resultant balanced output signal to impedance matching ramp elements, at the output end of which are disposed biased diodes which are adjustably positioned for optimum noise figure. The conductors providing the diode bias terminate at a circuit board in the collection box whereat the difference frequency signal output may be taken.
摘要翻译：毫米级混合器封装以诸如塑料的廉价轻质材料的块结构方式制造，然后将导电表面镀金。整体收集箱形成包装的一部分，用于在混合器的输出端中布置电路板和其它元件。混频器为2毫米波输入提供魔术T型混合结，其中一个可以是本地振荡器，该结通过合成的平衡输出信号耦合到阻抗匹配斜坡元件，输出端的输出端设置偏置二极管，其可调节地定位以获得最佳噪声系数。提供二极管偏压的导体终止于收集箱中的电路板，可以采用差分频率信号输出。

10. 发明授权

US3840230A Game racket 失效
标题翻译：游戏架
公开(公告)号：US3840230A
公开(公告)日：1974-10-08
申请号：US24117672
申请日：1972-04-05
申请人： GEN DYNAMICS CORP
发明人： SCHAEFER W , BENDER R
IPC分类号： A63B49/10 , A63B49/02 , A63B49/08 , A63F3/00
CPC分类号： A63B49/08 , A63B49/02 , A63B2049/0205 , Y10S273/01 , Y10S273/07 , Y10S273/23
摘要： A composite game racket having improved stiffness and uniformity is disclosed. The racket comprises a shell formed from molded synthetic resin with a high strength fiber reinforced plastic facing laminated to each face of the shell. The shell is internally recessed in a truss-like pattern to provide lightness with strength. The handle of the racket includes a pair of plastic pallets secured to the handle portion of the shell and covered with a covering material, such as a thin leather strip winding. The finished racket is finally strung in a conventional manner and is then ready for use.

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