公开(公告)号：US4282812A

公开(公告)日：1981-08-11

申请号：US27882

申请日：1979-04-06

Applicant: James H. Forgey ,  Donald R. Stephens ,  Engnam A. Tan

Inventor： James H. Forgey ,  Donald R. Stephens ,  Engnam A. Tan

IPC: F42B3/00 ,  F42B3/087 ,  F42B3/26 ,  F42D1/08 ,  F42D1/20

CPC classification number: F42B3/087 ,  F42B3/26

Abstract: A chub cartridge has a tubular chamber containing a water-bearing blasting agent, and a longitudinal tunnel adjacent to the tubular chamber and integral therewith. Preferably, the tunnel is full-length and continuous and has holes for threading a detonating cord therethrough and for holding a cord firmly against the tubular chamber for the cord-priming of the cartridges. In primer assemblies, the tunnel also can be used to hold a cap/booster in place, and for lacing cap wires or a low-energy detonating cord. A preferred cartridge is made continuously in a series by wrapping a web of film having a row of holes along one edge so as to form a tube and an outer flap containing the holes, and sealing the tube and the flap so as to form a tunnel containing the holes in its outer portion, the wrapping being performed so that either the inner or outer portion of the tunnel is circumferentially longer than the other.

Abstract translation: 小盒筒具有包含含水爆破剂的管状室和与管状室相邻并与其成一体的纵向通道。 优选地，隧道是全长且连续的，并且具有用于穿过引爆绳的孔，并且用于将绳索牢固地保持抵靠管状室用于盒的帘线启动。 在底漆组件中，隧道也可以用于将帽/助力器固定在适当位置，并用于装配帽线或低能量引爆绳。 通过沿着一个边缘缠绕具有一排孔的薄膜的网状物来连续制造优选的筒，以形成容纳该孔的管和外部瓣，并且密封管和瓣以便形成隧道 在其外部包含孔，执行包装，使得隧道的内部或外部部分周向地比另一个长。

公开(公告)号：US6044872A

公开(公告)日：2000-04-04

申请号：US169441

申请日：1998-10-09

Applicant: Donald R. Stephens

Inventor： Donald R. Stephens

IPC: B21F15/06 ,  E04H17/26

CPC classification number: B21F15/06 ,  E04H17/26

Abstract: Embodiments of a fence clip installing tool and methods of using it are described. The preferred tool uses a stack of connected fence clips which are loaded in advance for semi-automatic multiple clip installations. Upon actuation, the tool places the simple, pre-shaped clip partially around the fence post, and then bends the clip ends around the wire that runs through the tool and laterally past the fence post. Thus, the clip extends around the back and two sides of the post and surrounds and grips the wire tightly on either side of the post to hold it securely against the front side of the post. The tool quickens the process of clip installation, lessens handling of clips, and results in more uniform installation, with the two clip ends extending in parallel vertical planes around the wire on either side of the post.

Abstract translation: 描述了围栏夹安装工具的实施例及其使用方法。 首选工具使用一堆连接的围栏夹，预先装入半自动多夹子安装。 在启动时，工具将简单的预制夹子部分地围绕围栏柱放置，然后将夹子端部围绕穿过工具的横向弯曲并横向穿过栅栏柱。 因此，夹子围绕柱的后部和两侧延伸，并且围绕并且将线紧紧地夹在柱的任一侧上，以将其牢固地保持抵靠柱的前侧。 该工具加快了夹子安装过程，减少了夹子的处理，并且导致更均匀的安装，两个夹子端部在柱子两侧的导线周围平行的垂直平面延伸。

公开(公告)号：US5905762A

公开(公告)日：1999-05-18

申请号：US9975

申请日：1998-01-21

Applicant: Donald R. Stephens

Inventor： Donald R. Stephens

IPC: H03J7/02 ,  H04L7/04 ,  H04L27/227 ,  H04L27/233 ,  H03D3/24 ,  H04L7/00

CPC classification number: H04L27/2272 ,  H03J7/02 ,  H04L27/233 ,  H04L7/041

Abstract: A receiver carrier synchronization apparatus and method for carrier synchronization with a received signal having a known data pattern preamble uses a "punctured" preamble for making carrier synchronization estimates thereby reducing the number of receivers required. The known data pattern preamble of the received signal is processed with a local reference signal and a differentiated replica of the known data pattern preamble to generate an error signal. The error signal is selectively sampled in the time domain in accordance with a puncture scheme, and the sampled error signal is used to generate the local reference signal in a closed loop. The received signal is processed with the local reference signal and a replica of the known data pattern preamble to generate a synchronization estimate signal.

公开(公告)号：US6094463A

公开(公告)日：2000-07-25

申请号：US109307

申请日：1998-06-30

Applicant: Donald R. Stephens ,  William Mosley, Jr.

Inventor： Donald R. Stephens ,  William Mosley, Jr.

IPC: H03G3/30 ,  H03L7/095 ,  H04B1/10 ,  H04L27/22 ,  H04L27/08

CPC classification number: H03L7/095 ,  H03G3/3052 ,  H04B1/1027

Abstract: A noise estimator for threshold correction of a receiver includes a low pass filter to remove wideband noise from an input signal that includes a signal component and a noise component. The output of the wideband filter is applied to a square-law power detector having an output applied to an envelope detector. The output of the envelope detector is the instantaneous envelope of the input signal and is applied to a low pass filter to perform time averaging and is also applied to a differential network. The output of the low pass filter is a signal representing a time averaged statistical envelope representing the statistical mean of the instantaneous envelope of the input signal. This signal is also applied to the differential network that generates a signal representing the difference in the instantaneous envelope of the input signal and the time averaged statistical envelope signal. This difference signal is applied to a square-law power detector and then to a low pass filter for time averaging. An output of the low pass filter is a signal representing an estimate of the noise component of the input signal.

Abstract translation: 用于接收机的阈值校正的噪声估计器包括低通滤波器，用于从包括信号分量和噪声分量的输入信号中去除宽带噪声。 宽带滤波器的输出被应用于具有施加到包络检测器的输出的平方律功率检测器。 包络检测器的输出是输入信号的瞬时包络，并且被施加到低通滤波器以执行时间平均，并且还应用于差分网络。 低通滤波器的输出是表示表示输入信号的瞬时包络的统计平均值的时间平均统计包络的信号。 该信号也被应用于差分网络，其产生表示输入信号的瞬时包络和时间平均的统计包络信号的差的信号。 该差分信号被应用于平方律功率检测器，然后应用于低通滤波器以进行时间平均。 低通滤波器的输出是表示输入信号的噪声分量的估计的信号。

公开(公告)号：US5790602A

公开(公告)日：1998-08-04

申请号：US573421

申请日：1995-12-15

Applicant: Donald R. Stephens

Inventor： Donald R. Stephens

IPC: H03J7/02 ,  H04L7/04 ,  H04L27/227 ,  H04L27/233 ,  H04L27/22 ,  H04L7/00

CPC classification number: H04L27/2272 ,  H03J7/02 ,  H04L27/233 ,  H04L7/041

Abstract: A receiver carrier synchronization apparatus and method for carrier synchronization with a received signal having a known data pattern preamble uses a "punctured" preamble for making carrier synchronization estimates thereby reducing the number of receivers required. The known data pattern preamble of the received signal is processed with a local reference signal and a differentiated replica of the known data pattern preamble to generate an error signal. The error signal is selectively sampled in the time domain in accordance with a puncture scheme, and the sampled error signal is used to generate the local reference signal in a closed loop. The received signal is processed with the local reference signal and a replica of the known data pattern preamble to generate a synchronization estimate signal.

公开(公告)号：US06229858B1

公开(公告)日：2001-05-08

申请号：US09109308

申请日：1998-06-30

Applicant: Donald R. Stephens ,  William Mosley, Jr.

Inventor： Donald R. Stephens ,  William Mosley, Jr.

IPC: H03D104

CPC classification number: H03L7/095 ,  H03G3/3052 ,  H04B1/1027

Abstract: A noise estimator for threshold correction of a receiver includes a low pass filter to remove wideband noise from an input signal that includes a signal component and a noise component. The output of the wideband filter is applied to a square-law power detector having an output applied to an envelope detector. The output of the envelope detector is the instantaneous envelope of the input signal and is applied to a low pass filter to perform time averaging and is also applied to a differential network. The output of the low pass filter is a signal representing a time averaged statistical envelope representing the statistical mean of the instantaneous envelope of the input signal. This signal is also applied to the differential network that generates a signal representing the difference in the instantaneous envelope of the input signal and the time averaged statistical envelope signal. This difference signal is applied to a square-law power detector and then to a low pass filter for time averaging. An output of the low pass filter is a signal representing an estimate of the noise component of the input signal.

Abstract translation: 用于接收机的阈值校正的噪声估计器包括低通滤波器，用于从包括信号分量和噪声分量的输入信号中去除宽带噪声。 宽带滤波器的输出被应用于具有施加到包络检测器的输出的平方律功率检测器。 包络检测器的输出是输入信号的瞬时包络，并且被施加到低通滤波器以执行时间平均，并且还应用于差分网络。 低通滤波器的输出是表示表示输入信号的瞬时包络的统计平均值的时间平均统计包络的信号。 该信号也被应用于差分网络，其产生表示输入信号的瞬时包络和时间平均的统计包络信号的差的信号。 该差分信号被应用于平方律功率检测器，然后应用于低通滤波器以进行时间平均。 低通滤波器的输出是表示输入信号的噪声分量的估计的信号。

公开(公告)号：US5901173A

公开(公告)日：1999-05-04

申请号：US762593

申请日：1996-12-09

Applicant: Donald R. Stephens ,  William Mosley, Jr.

Inventor： Donald R. Stephens ,  William Mosley, Jr.

IPC: H03G3/30 ,  H03L7/095 ,  H04B1/10 ,  H04B17/00 ,  H04L27/08

CPC classification number: H03L7/095 ,  H03G3/3052 ,  H04B1/1027

Abstract: A noise estimator for threshold correction of a receiver includes a low pass filter to remove wideband noise from an input signal that includes a signal component and a noise component. The output of the wideband filter is applied to a square-law power detector having an output applied to an envelope detector. The output of the envelope detector is the instantaneous envelope of the input signal and is applied to a low pass filter to perform time averaging and is also applied to a differential network. The output of the low pass filter is a signal representing a time averaged statistical envelope representing the statistical mean of the instantaneous envelope of the input signal. This signal is also applied to the differential network that generates a signal representing the difference in the instantaneous envelope of the input signal and the time averaged statistical envelope signal. This difference signal is applied to a square-law power detector and then to a low pass filter for time averaging. An output of the low pass filter is a signal representing an estimate of the noise component of the input signal.

Abstract translation: 用于接收机的阈值校正的噪声估计器包括低通滤波器，以从包括信号分量和噪声分量的输入信号中去除宽带噪声。 宽带滤波器的输出被应用于具有施加到包络检测器的输出的平方律功率检测器。 包络检测器的输出是输入信号的瞬时包络，并且被施加到低通滤波器以执行时间平均，并且还应用于差分网络。 低通滤波器的输出是表示表示输入信号的瞬时包络的统计平均值的时间平均统计包络的信号。 该信号也被应用于差分网络，其产生表示输入信号的瞬时包络和时间平均的统计包络信号的差的信号。 该差分信号被应用于平方律功率检测器，然后应用于低通滤波器以进行时间平均。 低通滤波器的输出是表示输入信号的噪声分量的估计的信号。

公开(公告)号：US5878090A

公开(公告)日：1999-03-02

申请号：US10322

申请日：1998-01-21

Applicant: Donald R. Stephens

Inventor： Donald R. Stephens

IPC: H03J7/02 ,  H04L7/04 ,  H04L27/227 ,  H04L27/233 ,  H04D3/24

CPC classification number: H04L27/2272 ,  H03J7/02 ,  H04L27/233 ,  H04L7/041

Abstract: A receiver carrier synchronization apparatus and method for carrier synchronization with a received signal having a known data pattern preamble uses a "punctured" preamble for making carrier synchronization estimates thereby reducing the number of receivers required. The known data pattern preamble of the received signal is processed with a local reference signal and a differentiated replica of the known data pattern preamble to generate an error signal. The error signal is selectively sampled in the time domain in accordance with a puncture scheme, and the sampled error signal is used to generate the local reference signal in a closed loop. The received signal is processed with the local reference signal and a replica of the known data pattern preamble to generate a synchronization estimate signal.

Abstract translation: 用于与具有已知数据模式前导码的接收信号进行载波同步的接收机载波同步装置和方法使用“穿孔”前导码进行载波同步估计，从而减少所需接收机的数量。 接收信号的已知数据模式前同步码用本地参考信号和已知数据模式前同步码的差分副本进行处理，以产生误差信号。 根据穿孔方案在时域中选择性地采样误差信号，采样误差信号用于在闭环中产生局部参考信号。 接收到的信号用本地参考信号和已知数据模式前同步码的副本进行处理，以产生同步估计信号。