公开(公告)号：US10407972B2

公开(公告)日：2019-09-10

申请号：US15366406

申请日：2016-12-01

申请人： Richard A. Watson ,  Christopher C. Gaydos ,  Eric F. Wenzel

发明人： Richard A. Watson ,  Christopher C. Gaydos ,  Eric F. Wenzel

IPC分类号： E05F17/00 ,  B61D7/02 ,  E05F15/00 ,  E06B3/46 ,  E01B27/02 ,  B61D7/20 ,  B61D7/26

摘要： A mechanism for conjointly operating a plurality of gate assemblies mounted on a hopper car having an elongated car body with sides and ends, and a bottom defining a discharge area comprised of a plurality of discharge openings. Each gate assembly includes a slide door arranged in operable association with one of the discharge openings. The mechanism operates the slide door on all the gates conjointly relative to each other. Methods for controlling the gravitational discharge of material from a hopper car are also disclosed.

公开(公告)号：USD325491S

公开(公告)日：1992-04-21

申请号：US435788

申请日：1989-11-13

申请人： Willi K. Nikolaiczyk ,  Richard A. Watson

设计人： Willi K. Nikolaiczyk ,  Richard A. Watson

公开(公告)号：USD315078S

公开(公告)日：1991-03-05

申请号：US239332

申请日：1988-09-01

申请人： Willi K. Nikolaiczyk ,  Richard A. Watson

设计人： Willi K. Nikolaiczyk ,  Richard A. Watson

公开(公告)号：US4377726A

公开(公告)日：1983-03-22

申请号：US152212

申请日：1980-05-21

申请人： William H. Schiffbauer ,  Richard A. Watson

发明人： William H. Schiffbauer ,  Richard A. Watson

IPC分类号： H04M9/00 ,  H04M13/00

CPC分类号： H04M9/001

摘要： A battery powered paging and intercommunication system for application in a mine or other environment where it is necessary to conserve battery power comprises a plurality of transceivers electrically coupled to a common pair of signal lines. Each of the transceivers includes a push-to-talk switch for applying voice signals onto the lines as well as a push-to-page switch that amplifies received voice signals for reproduction through a loudspeaker. Each transceiver also includes dual tone multifrequency (DTMF) encoder and decoder circuitry for addressing a preselected transceiver on the lines for paging. A timer circuit within the transceiver limits the period of time the transceiver limits the period of time the transceiver is in the paging mode to reduce battery consumption. As a system check during paging, the called transceiver generates "beep-back" signals on the lines indicating to the calling transceiver that it is receiving paging signals. A second timer circuit controls a light flasher at the called transceiver to serve as a call back signal.

摘要翻译： 用于应用于需要节省电池电力的矿山或其他环境中的电池供电寻呼和互通系统包括电耦合到公共信号线对的多个收发器。 每个收发器包括用于将语音信号应用到线路上的一键通切换开关，以及用于通过扬声器放大接收到的语音信号以进行再现的按压式页面开关。 每个收发器还包括双音多频（DTMF）编码器和解码器电路，用于寻址用于寻呼的线路上的预选收发器。 收发器内的定时器电路限制收发器限制收发器处于寻呼模式的时间段以减少电池消耗的时间。 作为在寻呼期间的系统检查，被叫收发器在向呼叫收发器指示正在接收寻呼信号的线路上产生“嘟嘟”信号。 第二定时器电路控制被叫收发器上的闪光灯用作回叫信号。