公开(公告)号：USD448519S1

公开(公告)日：2001-09-25

申请号：US29136719

申请日：2001-02-05

Applicant: Andrew D. Smith

Designer： Andrew D. Smith

公开(公告)号：USD448112S1

公开(公告)日：2001-09-18

申请号：US29133311

申请日：2000-11-28

Applicant: Andrew D. Smith

Designer： Andrew D. Smith

公开(公告)号：US06253129B1

公开(公告)日：2001-06-26

申请号：US08828015

申请日：1997-03-27

Applicant: Paul C. Jenkins ,  David V. Deal ,  Thomas G. Cuthbertson ,  James W. Morton ,  Andrew D. Smith ,  David R. Hoy ,  Gerald W. Egeberg

Inventor： Paul C. Jenkins ,  David V. Deal ,  Thomas G. Cuthbertson ,  James W. Morton ,  Andrew D. Smith ,  David R. Hoy ,  Gerald W. Egeberg

IPC: G01M1700

CPC classification number: G08G1/202 ,  G07C5/008 ,  G07C5/0858

Abstract: A commercial vehicle fleet management system which integrates a vehicle on-board computer, a precise positioning system, and communication system to provide automated calculating and reporting of jurisdictional fuel taxes, road use taxes, vehicle registration fees, and the like. In a further aspect, there is provided an online mobile communication system and a system for monitoring carrier vehicle efficiency and vehicle driver performance.

Abstract translation: 一种商用车队管理系统，其集成了车载计算机，精确的定位系统和通信系统，以提供管理燃油税，道路使用税，车辆登记费等的自动计算和报告。 另一方面，提供了一种在线移动通信系统和用于监视运载工具效率和车辆驾驶员性能的系统。

公开(公告)号：US06207901B1

公开(公告)日：2001-03-27

申请号：US09285032

申请日：1999-04-01

Applicant: Andrew D. Smith ,  Barry R. Allen

Inventor： Andrew D. Smith ,  Barry R. Allen

IPC: H01B718

CPC classification number: H01P1/30 ,  H01P3/06

Abstract: An RF cable contains an coaxial inner conductor and a coaxial outer shield surrounding the inner conductor in a concentric arrangement. Quarter-wave series sections in the inner conductor and the outer shield severs a direct thermal path along the RF cable, providing low thermal loading for a cryogenic-to-ambient temperature interconnection. The resonant structure of the RF cable permits propagation alternating current and blocks direct current. A method of forming the RF cable comprises depositing metal on a substrate composed of a polymer film having very low thermal conductivity, and winding the metallized substrate into a tubular configuration. The inner conductor may extend laterally beyond the outer shield to provide points of electrical contact.

Abstract translation: RF电缆包含同轴的内部导体和以同心布置围绕内部导体的同轴外部屏蔽。 内部导体和外部屏蔽中的四分之一波段部分切断沿着RF电缆的直接热路径，为低温环境温度互连提供低热负载。 RF电缆的谐振结构允许传播交流电流并阻止直流电流。 形成RF电缆的方法包括在由具有非常低导热性的聚合物膜构成的基底上沉积金属，并将金属化基板卷绕成管状构造。 内导体可以横向延伸超过外屏蔽以提供电接触点。

公开(公告)号：US5153171A

公开(公告)日：1992-10-06

申请号：US583734

申请日：1990-09-17

Applicant: Andrew D. Smith ,  Arnold H. Silver ,  Charles M. Jackson

Inventor： Andrew D. Smith ,  Arnold H. Silver ,  Charles M. Jackson

IPC: H01L39/22 ,  H01P1/18 ,  H01P1/185 ,  H01P9/00 ,  H03H7/30

CPC classification number: H01P1/185 ,  Y10S505/701 ,  Y10S505/702 ,  Y10S505/866 ,  Y10S505/874

Abstract: A superconducting variable phase shifter providing improved performance in the microwave and millimeter wave frequency ranges. The superconducting variable phase shifter includes a transmission line and an array of superconducting quantum interference devices (SQUID's) connected in parallel with and distributed along the length of the transmission line. A DC control current I.sub.DC varies the inductance of the individual SQUID's and thereby the distributed inductance of the transmission line, thus controlling the propagation speed, or phase shift, of signals carried by the transmission line. The superconducting variable phase shifter provides a continuously variable time delay or phase shift over a wide signal bandwidth and over a wide range of frequencies, with an insertion loss of less than 1 dB. The phase shifter requires less than a milliwatt of power and, if one or more of the Josephson junctions fails, the whole device remains operational, since the SQUID's are connected in parallel.