Particle counting

Details Particle counting Particle counting

Filed on

1977-06-16

Date issued

1978-12-19

Examiner

Thesz, Joseph M.

Patent Class

Registers

SubClass

Platform operated

SubSubClass

Platform actuated traffic counters

Other Related Categories

235 92CP, 235 92R, 324 71CP, G06M 1100, G01N 2710

Type

Patent

Status

active

Patent number

041307542

Description

ABSTRACT:
Apparatus for counting particles, such as blood cells, suspended in a liquid medium. A chamber receives a sample of the liquid medium containing particles and the sample flows from the chamber through a conduit. The conduit is normally closed but is opened for flow of the sample therethrough with the sample being drawn through the conduit upon its being opened. A counter counts particles in the sample as it flows through the conduit and a single manual operation opens the conduit for flow of a sample therethrough and concomitantly actuates the counter to count the particles in the sample flowing through the conduit. A method of counting particles suspended in a liquid medium is also disclosed.

REFERENCES:
patent: 2656508 (1953-10-01), Coulter
patent: 2869078 (1959-01-01), Coulter et al.
patent: 3015775 (1962-01-01), Coulter et al.
patent: 3273402 (1966-09-01), Farr
patent: 3657725 (1970-04-01), Estelle et al.
patent: 3769582 (1973-10-01), Schoen
patent: 3781675 (1973-12-01), Angel
patent: 3846701 (1974-11-01), Sampey
patent: 3865305 (1975-02-01), Sampey
patent: 3874850 (1975-04-01), Sorensen et al.
patent: 3921066 (1975-11-01), Angel et al.

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