公开(公告)号：US3921047A

公开(公告)日：1975-11-18

申请号：US34735573

申请日：1973-04-02

Applicant: BECKMAN INSTRUMENTS INC

Inventor： CARTER ALAN W ,  FRANKLIN ROBERT C

IPC: B04B9/10 ,  B04B13/00 ,  F16P7/00 ,  G05D13/62 ,  H02P3/06

CPC classification number: F16P7/00 ,  B04B13/003 ,  Y10S388/903 ,  Y10S388/921 ,  Y10S388/933

Abstract: In an overspeed protection system for a centrifuge apparatus of the type which uses a coded reflective disk having alternate reflective and non-reflective sectors secured to a rotor to determine the maximum safe operating speed thereof, there is disclosed apparatus for detecting, upon start-up of the centrifuge, whether the disk is in place and operating properly. This is ascertained by determining whether the time durations of the signals from the rotor are greater or less than a predetermined minimum value. If they are greater than the minimum value, this is indicative of the fact that the coded disk is in proper position. If they are less than the minimum value, a power shutdown command is generated.

Abstract translation: 在使用具有固定到转子的交替反射和非反射扇区的编码反射盘来确定其最大安全操作速度的类型的离心机设备的超速保护系统中，公开了一种用于在启动时检测 的离心机，无论磁盘是否到位​​并正常运行。 这通过确定来自转子的信号的持续时间是否大于或小于预定的最小值来确定。 如果它们大于最小值，则这表示编码的磁盘处于适当的位置。 如果它们小于最小值，则生成电源关闭命令。

公开(公告)号：US3440517A

公开(公告)日：1969-04-22

申请号：US3440517D

申请日：1966-06-17

Applicant: BECKMAN INSTRUMENTS INC

Inventor： PAGE ARCHER G ,  CARTER ALAN W

IPC: G05F1/66 ,  H05B39/08 ,  H02M5/06 ,  H05B41/36

CPC classification number: H05B39/083 ,  G05F1/66