公开(公告)号：US5239696A

公开(公告)日：1993-08-24

申请号：US778461

申请日：1991-10-15

Applicant: Brent F. Balch ,  David Roberson

Inventor： Brent F. Balch ,  David Roberson

IPC: G01V3/12 ,  G08B13/24 ,  H04B1/04

CPC classification number: G08B13/2488 ,  G01V3/12 ,  G08B13/2471 ,  H04B2001/0433

Abstract: A transmitter for an electronic article surveillance system having a power amplifier for forming a drive signal for causing a current to flow through an antenna. The magnitude of the current flowing through the antenna is sensed and, based upon the sensed current, the drive signal is continuously controlled.

Abstract translation: 一种用于电子物品监视系统的发射器，具有用于形成用于使电流流过天线的驱动信号的功率放大器。 感测流过天线的电流的大小，并且基于感测到的电流，驱动信号被连续地控制。

公开(公告)号：US20120168394A1

公开(公告)日：2012-07-05

申请号：US13090484

申请日：2011-04-20

Applicant: Brian Lawrence Dorr ,  David Roberson

Inventor： Brian Lawrence Dorr ,  David Roberson

IPC: A47B81/00

CPC classification number: F17C13/084 ,  F17C2201/0109 ,  F17C2201/0119 ,  F17C2201/032 ,  F17C2201/058 ,  F17C2205/018 ,  F17C2221/035 ,  F17C2223/0153 ,  F17C2223/033 ,  F17C2270/0745

Abstract: An apparatus includes a base member, a first leg member pivotably engaged to the base member, a second leg member pivotably engaged to the base member, a third leg member pivotably engaged to the base member, the third leg member including a linkage portion, and a retaining member engaged to the linkage portion.

Abstract translation: 一种装置，包括：基部构件，可枢转地接合到基座构件的第一腿构件，与所述基座构件可枢转地接合的第二腿构件，与所述基座构件可枢转地接合的第三腿构件，所述第三腿构件包括连杆部， 接合到连杆部的保持构件。