Toy boomerang
    3.
    发明授权
    Toy boomerang 失效
    玩具飞旋镖

    公开(公告)号:US3955817A

    公开(公告)日:1976-05-11

    申请号:US390949

    申请日:1973-08-23

    申请人: James E. Davis

    发明人: James E. Davis

    IPC分类号: A63B65/08 A63H27/12

    CPC分类号: A63H27/12 A63B65/08

    摘要: A toy boomerang having a hub and four wings extending therefrom, the wings having downwardly extending lifting surface at wing tips. A rim extends around the boomerang, coupling together the wing tips. A stabilizing axle extends downward from the hub.

    摘要翻译: 具有轮毂和从其延伸的四个翼的玩具飞镖体,所述翼在翼尖处具有向下延伸的提升表面。 轮辋围绕飞旋镖延伸,将翼尖连接在一起。 稳定轴从轮毂向下延伸。

    Source adjusted colorimeter
    4.
    发明授权

    公开(公告)号:US07561271B2

    公开(公告)日:2009-07-14

    申请号:US11981418

    申请日:2007-11-01

    申请人: James E. Davis

    发明人: James E. Davis

    IPC分类号: G01J3/51

    摘要: A low cost calorimeter wherein a linear taper potentiometer proportions the current through sample and reference solid state light sources in a near logarithmic fashion. The position of the potentiometer slider is proportional to the absorbance of the solution in the sample path when the light intensity of the two paths is balanced. The light intensity may be balanced visually or with a simple electronic comparator.

    Animal control system
    5.
    发明授权
    Animal control system 有权
    动物控制系统

    公开(公告)号:US06923147B1

    公开(公告)日:2005-08-02

    申请号:US10741833

    申请日:2003-12-22

    申请人: James E. Davis

    发明人: James E. Davis

    IPC分类号: A01K15/02 A01K15/00

    CPC分类号: A01K15/023 Y10S119/908

    摘要: An animal control system generates an on-off correction stimulus using a small transformer and rectifies the high voltage output to give an unfiltered unipolar voltage applied to electrodes as a correction stimulus. A small, efficient power isolation system. A programming signal can be applied to the electrodes to affect control parameters of the control system.

    摘要翻译: 动物控制系统使用小变压器产生开 - 关校正刺激,并对高电压输出进行整流,以将施加于电极的未过滤单极电压作为校正刺激。 一个小而高效的电源隔离系统。 编程信号可以应用于电极,以影响控制系统的控制参数。

    Animal control system
    6.
    发明授权
    Animal control system 有权
    动物控制系统

    公开(公告)号:US06684820B1

    公开(公告)日:2004-02-03

    申请号:US10261103

    申请日:2002-10-01

    申请人: James E. Davis

    发明人: James E. Davis

    IPC分类号: A01K1500

    CPC分类号: A01K15/023 Y10S119/908

    摘要: An animal control system and method generates an on-off correction stimulus using a small transformer and rectifies the high voltage output to give an unfiltered unipolar voltage applied to electrodes as a correction stimulus. A small, efficient power isolation system is disclosed. An omnidirectional antenna is disclosed that reduces authentication time.

    摘要翻译: 动物控制系统和方法使用小变压器产生开 - 关校正刺激,并对高电压输出进行整流,以提供施加到电极的未过滤的单极电压作为校正刺激。 公开了一种小型高效的电力隔离系统。 公开了一种减少验证时间的全向天线。

    Animal control system
    7.
    发明授权
    Animal control system 失效
    动物控制系统

    公开(公告)号:US5575242A

    公开(公告)日:1996-11-19

    申请号:US201215

    申请日:1994-03-21

    IPC分类号: A01K15/02 G08B21/00

    CPC分类号: A01K15/023

    摘要: There is described a system for controlling the movement of an animal relative to a controlled area delineated by a wire loop antenna. The controlled area may be inclusive or exclusionary. A frequency modulated signal is transmitted by the FM transmitter connected to the loop. An FM receiver attached to the animal detects the transmitted signal and provides an alarm signal to the animal. The loop antenna is untuned. Low radio frequencies are used and the carrier frequency deviation is large to reduce the systems susceptability to noise. The modulating frequency is limited, also to reduce susceptibility to noise. Integrated circuits are especially designed to permit operation with very low power.

    摘要翻译: 描述了一种用于控制动物相对于由线环天线描绘的受控区域的运动的系统。 受控区域可能是包容性或排斥性的。 频率调制信号由连接到环路的FM发射机传输。 连接到动物的FM接收器检测发送的信号并向动物提供报警信号。 环形天线未被恢复。 使用低无线电频率,并且载波频率偏差大,以减少系统对噪声的敏感性。 调制频率有限,也降低了对噪声的敏感性。 集成电路特别设计用于以非常低的功率运行。