Method and apparatus for pneumatically sampling powders

Details Method and apparatus for pneumatically sampling powders Method and apparatus for pneumatically sampling powders

1979-10-09

1981-09-01

Swisher, S. Clement

Measuring and testing

Sampler, sample handling, etc.

Withdrawing through conduit or receptacle wall

7386433, G01N 114

Patent

active

042864666

ABSTRACT:
A pneumatic sampler for use in collecting a sample of xerographic toner from a mass of such toner. A positive-pressure air source is connected to atmosphere through a venturi so as to produce a negative-pressure source. The positive-pressure source is also adapted to be connected through a first conduit to the toner mass. Positive-pressure airflow through this first conduit both purges the first conduit of residual toner and fluidizes at least a portion of the toner mass. A toner sample container is adapted to be simultaneously connected through a second conduit to the venturi. The resulting negative-pressure airflow through the second conduit evacuates the container. Negative-pressure induced airflow also purges the second conduit of residual toner. The container is connected to the toner mass through the series-connected and now-purged first and second conduits, and the negative-pressure within the container produces flow of toner from the toner mass to the container.

REFERENCES:
patent: Re29087 (1976-12-01), Larson
patent: 3156120 (1964-11-01), Kowynia
patent: 3438261 (1969-04-01), Collins
patent: 3782200 (1974-01-01), Maas
patent: 3869921 (1975-03-01), Irwin
patent: 3880011 (1975-03-01), Johnson
patent: 3901087 (1975-08-01), Fabritus
patent: 3973440 (1976-08-01), Vande Ven

Affiliated with

Also associated with

Rating

Method and apparatus for pneumatically sampling powders does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for pneumatically sampling powders, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for pneumatically sampling powders will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1670203