公开(公告)号：US3877609A

公开(公告)日：1975-04-15

申请号：US40870873

申请日：1973-10-23

Applicant: BAXTER LABORATORIES INC

Inventor： CULLIS HERBERT M

IPC: F04B23/10 ,  F04B43/107 ,  F04B43/12 ,  B65D37/00

CPC classification number: F04B43/107 ,  F04B23/10 ,  F04B43/1253

Abstract: A dispensing apparatus provides a fluid flow path of the recirculating type. A pump provides circulation of fluid within the flow path from a reservoir through a dispenser whose nozzle output may be disposed for dispensing. An actuator is coupled to the dispenser and operates to dispense from the nozzle an accurate measured volume of fluid at times when the pump is inoperative and the fluid within the flow line is otherwise static. Fluid is dispensed upon distortion of the flow line as a result of displacement of surrounding fluid in a closed system.

Abstract translation: 分配装置提供循环型流体流动路径。 一个泵提供流体通过流体通道从贮存器循环通过分配器，其喷嘴输出可被设置用于分配。 致动器联接到分配器并且操作以在泵不工作的时候从喷嘴分配精确测量的流体体积，并且流动管线内的流体是静态的。 由于封闭系统中周围流体的位移，流体在流线失真时被分配。

公开(公告)号：US3627424A

公开(公告)日：1971-12-14

申请号：US3627424D

申请日：1968-10-30

Applicant: BAXTER LABORATORIES INC

Inventor： DORMAN HORTON E ,  SOODAK CHARLES ,  CULLIS HERBERT M ,  MILLER C DAVID ,  RODRIGUEZ RODOLFO RAMIRO ,  YOUNGQUIST ERIC W

IPC: C12M1/34 ,  G06M11/00 ,  H03K21/08 ,  G01N21/00 ,  G01B11/00

CPC classification number: G06M11/00 ,  C12M41/36 ,  H03K21/08

Abstract: An automated device for detecting measuring and counting growing microcolonies of bacteria by their light-scattering property. The growing bacteria are contained in glass capillary tubes filled with nutrient agar and are counted by passing the capillary tubes through a narrow beam of light. The tubes are mounted in a holder which is, in turn, detachably secured on a carriage. The carriage is translated in a direction lengthwise of the tubes and then sequentially moved transversely in a step equal to the distance between adjacent tubes. Transverse stepping takes place at the end of the longitudinal travel of each tube. A fixed light source and associated stationary optical means projects a narrow light beam which intersects the tubes as they translate. The presence of growing bacterial microcolonies causes light scattering which is detected in the form of pulses of light by a photomultiplier tube located opposite the path of translation of the tubes relative to the light source. The corresponding signal pulses produced by the photomultiplier tube are counted by an electronic counting circuit which provides a fast count of the particles scanned.