公开(公告)号：US4332340A

公开(公告)日：1982-06-01

申请号：US150125

申请日：1980-05-15

Applicant: Frederick J. Harris

Inventor： Frederick J. Harris

IPC: B25C1/14 ,  B25C1/18

CPC classification number: B25C1/14 ,  B25C1/188 ,  B25D2250/191

Abstract: A buffer assembly for use in a piston-type powder-actuated tool, which buffer assembly provides for a longer useful life of the piston. The buffer assembly includes an elastomeric member which is disposed in the bore of the tool barrel, and which is fitted with a metallic cap. The tool barrel and metallic cap combine to control and constrain radial and longitudinal expansion of the elastomeric member, when the latter is impacted by the driven piston. In this manner, extrusion of the elastomeric member is prevented and, at the same time, the piston is prevented from contacting other hardened tool surfaces.

Abstract translation: 用于活塞式粉末致动工具的缓冲组件，该缓冲组件提供活塞的更长的使用寿命。 缓冲组件包括弹性体构件，该弹性构件设置在工具筒的孔中，并且装配有金属盖。 工具桶和金属盖组合以控制和约束弹性体构件的径向和纵向膨胀，当弹簧构件受到被驱动的活塞的冲击时。 以这种方式，可以防止弹性体部件的挤出，并且同时防止活塞接触其它硬化工具表面。

公开(公告)号：USD405994S

公开(公告)日：1999-02-23

申请号：US76077

申请日：1997-08-21

Applicant: Frederick J. Harris

Designer： Frederick J. Harris

公开(公告)号：US5518562A

公开(公告)日：1996-05-21

申请号：US242462

申请日：1994-05-13

Applicant: John G. Searle ,  Frederick J. Harris

Inventor： John G. Searle ,  Frederick J. Harris

IPC: B23K20/12

CPC classification number: B23K20/129

Abstract: A new method of friction welding, particularly suitable for manufacturing BLISKS and BLUMS for gas turbine engine rotors, in which the disc or drum rotor is angularly reciprocated while the airfoil blades are pressed radially against the rotor circumference. A machine for carrying out the method has a workpiece holder and a counterbalancing member mounted for angular reciprocation and coupled together by torque transfer means to constitute a resonant system. In operation the machine is driven at or near its natural frequency of oscillation. The natural frequency can be tuned by adjusting the stiffness of the torque transfer means. The machine also includes a drive mechanism.

Abstract translation: 一种摩擦焊接的新方法，特别适用于制造用于燃气轮机发动机转子的BLISKS和BLUMS，其中盘式或鼓形转子在翼型件径向地抵靠转子圆周的情况下成角度地往复运动。 用于执行该方法的机器具有工件保持器和安装成角度往复运动的平衡构件，并且通过扭矩传递装置联接在一起以构成共振系统。 在操作中，机器在其固有振荡频率处或其附近被驱动。 可以通过调整扭矩传递装置的刚度来调节固有频率。 该机器还包括驱动机构。

公开(公告)号：US4286496A

公开(公告)日：1981-09-01

申请号：US84283

申请日：1979-10-12

Applicant: Frederick J. Harris

Inventor： Frederick J. Harris

IPC: B25C1/18 ,  F16B19/14 ,  F16B15/00

CPC classification number: F16B19/14 ,  B25C1/18 ,  B25C1/188 ,  Y10S411/907 ,  Y10S411/908

Abstract: A guidance and retention member, for use with a nail-like fastener of the type adapted to be driven by a powder-actuated tool, comprising an axially elongate, hollow, cylindrical body adapted for telescopic retention on the nose of the fastener and of an even number of flexible, radially extending fins, wherein alternating ones of the fins are of substantially greater radial extent than the fins adjacent thereto. The shorter fins, although nominally of the same thickness as the longer ones, are more rigid by virtue of their lower length-to-thickness ratio and act to limit pre-firing eccentricity of the fastener relative to the tool.

Abstract translation: 引导和保持构件，用于适于由粉末致动工具驱动的类型的钉状紧固件，其包括轴向细长的中空的圆柱形主体，其适于在紧固件的鼻部上伸缩保持， 偶数个柔性的，径向延伸的翅片，其中交替的翅片具有比与其相邻的翼片大得多的径向延伸。 较短的翅片虽然名义上与较长的翅片相同，但由于其较短的长度与厚度的比例而更加刚性，并且用于限制紧固件相对于工具的预先烧制偏心度。

公开(公告)号：US07639735B1

公开(公告)日：2009-12-29

申请号：US11478102

申请日：2006-06-29

Applicant: Christopher H. Dick ,  Frederick J. Harris

Inventor： Christopher H. Dick ,  Frederick J. Harris

IPC: H04B17/00

CPC classification number: H04B17/336

Abstract: A method and apparatus for generating a signal to noise ratio (SNR) estimate. A conditional probability distribution function (CPDF) is rectified to suppress the condition, thereby creating a biased CPDF. Conditional offset moments are computed through an analysis of the asymmetry generated by the rectification. The conditional offset moments are then utilized to reduce the bias generated by the rectification to enhance the SNR estimate.

Abstract translation: 一种用于产生信噪比（SNR）估计的方法和装置。 纠正条件概率分布函数（CPDF）以抑制条件，从而产生偏向CPDF。 通过对整流产生的不对称性的分析来计算条件偏移矩。 然后利用条件偏移力矩来减小由整流产生的偏差以增强SNR估计。

公开(公告)号：US5849146A

公开(公告)日：1998-12-15

申请号：US898107

申请日：1997-07-22

Applicant: John G. Searle ,  John P. Searle ,  Frederick J. Harris ,  John G. Beresford

Inventor： John G. Searle ,  John P. Searle ,  Frederick J. Harris ,  John G. Beresford

IPC: B23K20/12

CPC classification number: B23K20/1205 ,  B23K20/12

Abstract: The frictional loads involved in a friction welding operation, for joining metal parts, may be several tons and the mass of the welding apparatus is correspondingly large. Thus, in addition to the energy which is converted into heat at the weld interface a substantial amount of work has to be done simply to overcome the inertial loads of the apparatus. An inertial load cancelling system is proposed in which a double acting gas spring arrangement is coupled to the welding oscillator output so that the work done in overcoming the inertia of the apparatus is returned to the system when the oscillator motion is reversed at the ends of each stroke. Thus, after the initial system input the oscillator has only to supply work to overcome internal frictional and that converted to frictional heat at the weld joint interface.

Abstract translation: 涉及用于接合金属部件的摩擦焊接操作中的摩擦负载可以是几吨，并且焊接装置的质量相应地较大。 因此，除了在焊接界面处转换成热的能量之外，必须简单地进行大量的工作来克服装置的惯性负载。 提出了一种惯性负载消除系统，其中双作用气弹簧装置耦合到焊接振荡器输出端，使得当振荡器运动在每个端部处反转时，克服装置的惯性所完成的工作返回到系统 行程。 因此，在初始系统输入之后，振荡器只能提供工作来克服内部摩擦并且在焊接接口处转换成摩擦热。

公开(公告)号：US5760722A

公开(公告)日：1998-06-02

申请号：US381665

申请日：1995-01-31

Applicant: Frederick J. Harris ,  Robert W. Caulfield ,  William H. McKnight

Inventor： Frederick J. Harris ,  Robert W. Caulfield ,  William H. McKnight

IPC: H03M3/02 ,  H03M3/00

CPC classification number: H03M3/368 ,  H03M3/418

Abstract: A series of sigma-delta modulators are connected in a cascaded architecture. Each sigma-delta modulator has a noise transfer function that defines a unique set of quantization noise transmission zeros. A circuit is coupled to the cascaded architecture and has a signal transfer function that is an approximation of the noise transfer function of a first sigma-delta modulator in the series of sigma-delta modulators.

Abstract translation: 一系列Σ-Δ调制器以级联架构连接。 每个Σ-Δ调制器具有定义一组唯一的量化噪声传输零点的噪声传递函数。 电路耦合到级联架构，并且具有作为Σ-Δ调制器系列中的第一Σ-Δ调制器的噪声传递函数的近似信号传递函数。

公开(公告)号：USD405995S

公开(公告)日：1999-02-23

申请号：US76078

申请日：1997-08-21

Applicant: Frederick J. Harris

Designer： Frederick J. Harris

公开(公告)号：US4995006A

公开(公告)日：1991-02-19

申请号：US175762

申请日：1988-03-31

Applicant: Robert G. Huenemann ,  Frederick J. Harris

Inventor： Robert G. Huenemann ,  Frederick J. Harris

IPC: G01R31/11

CPC classification number: G01R31/11

Abstract: Low pass equivalent processing is a method for use with a network analyzer, that gethers a sequence of NDATA samples, each sample including real and imaginary components of a signal, over a frequency range from F1 to f2 in frequency steps of (f2-f1)/(NDATA-1), where f1 is greater than zero. The sequence of samples is processed to estimate a characteristic of the signal with respect to a selected discontinuity in the signal. The sequence of samples is converted to time domain, to generate time domain data over a range from zero to t. The selected discontinuity is identified as lying within a range of t1 to t2. Next, the phase of the time domain data is unwound to correct a portion of the phase error resulting from the one sided spectrum that is not dependent on the distance to the discontinuity through the network. Next, the magnitude peak JMAX of the data samples between time range t1 to t2, is determined. The phase angles of the data at two points removed from the magnitude JMAX by a number of data points dependent on the type of biasing window used in measurement of the data are used to determine a slope through JMAX. From this information, an estimate is made of the location of the discontinuity in the network. The phase of the time domain data is unwrapped in response to that estimate of location according to an empirically derived equation.

Abstract translation: 低通等效处理是一种与网络分析仪一起使用的方法，可以在（f2-f1）的频率步长中从F1到f2的频率范围内获得NDATA样本序列，每个样本包括信号的实分量和虚分量， /（NDATA-1），其中f1大于零。 处理样本序列以估计信号相对于信号中选定的不连续性的特性。 将样本序列转换为时域，在0到t的范围内生成时域数据。 所选择的不连续性被确定为在t1至t2的范围内。 接下来，展开时域数据的相位以校正由不依赖于通过网络到不连续点的距离的单面频谱产生的相位误差的一部分。 接下来，确定时间范围t1至t2之间的数据样本的幅度峰值JMAX。 使用取决于数据测量中使用的偏置窗口类型的多个数据点从数值JMAX移除的两个点处的数据的相位角用于确定通过JMAX的斜率。 从该信息中，对网络中的不连续性的位置进行估计。 根据经验导出的方程，响应于位置估计，解开时域数据的相位。

公开(公告)号：US4218005A

公开(公告)日：1980-08-19

申请号：US61714

申请日：1979-07-30

Applicant: Frederick J. Harris

Inventor： Frederick J. Harris

IPC: B25C1/16 ,  B25C1/14

CPC classification number: B25C1/16

Abstract: The venting of fouled combustion gases from the bore of a piston-type powder actuated fastening tool is provided by forming a gas vent which defines a gas flow path extending through the piston pawl return mechanism mounting to the atmosphere. A gas chamber is provided within the pawl mounting which chamber is vented to the atmosphere. A series of baffles is disposed within the pawl mounting in the gas path to provide for cooling of the hot combustion gases.

Abstract translation: 来自活塞式粉末驱动的紧固工具的孔中的污染的燃烧气体的排放通过形成气体排出口来提供，该排气口限定了延伸穿过安装到大气中的活塞棘爪返回机构的气体流动路径。 在所述棘爪安装件内设置有气室，该腔室通向大气。 一系列挡板设置在安装在气体路径中的棘爪内，以提供热燃烧气体的冷却。