Unit dose bulk material sampling apparatus
AssigneeAcutrol Co.
InventorsIvan Pinto, Gerardo Perez, William P. Wallace
Life of this patent
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Abstract
Apparatus for removing a sample of granular or powder materials from a vat in which such materials are mixed in bulk, including an elongated probe having a sample receiving cavity at one end which may be adjusted to a predetermined volume. The probe is inserted in the bulk mixture to a predetermined depth, the cavity loaded with material from the bulk and after closing the cavity, the probe is removed from the bulk removing therefrom a sample of a desired predetermined quantity representative of the bulk mixture at the insertion point. A backing plate is also provided in the probe to compact the sample in the cavity to facilitate handling of the sample.
Claims12
A sampler apparatus for unit dose bulk material sampling, comprising:
- an elongated housing having a length, an axis coextensive with said length, a first bore extending along said axis the length of said housing, an open front end lying in a plane substantially perpendicular to the axis, and a back end;
- a moveable piston supported in said first bore, comprising a plug having a front surface being in a plane perpendicular to the axis and a shaft extending from said plug in a direction opposite said front surface along said axis, the plug sized to completely fit the first bore to form a saddling cavity in the first bore having an adjustable sampling volume for containing a predetermined quantity of said bulk material, said sampling cavity extending between the front surface of the plug and the open front end of the housing, the open front end of the housing forming an entrance to the sampling cavity;
- means operable to axially move said piston for selectively varying the position of the plug in the first bore for adjusting and presetting the size of the sampling cavity prior to sampling;
- a closure cap attached to said housing and having means for selectively controlling opening and closing said entrance to the sampling cavity prior to, after and when the sampler is inserted in the bulk material for sampling.
Dependencies are inferred from the claim text.