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For a concept search, you can enter phrases, sentences, or full paragraphs in English. For example, copy and paste the abstract of a patent application or paragraphs from an article.
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A method and means are described for minimizing turbulence and contamination caused by movement of a robotic device within a clean room.
English (United States)
This text was extracted from a PDF file.
This is the abbreviated version, containing approximately
98% of the total text.
Page 1 of 1
Minimizing Turbulence/contamination in a Clean Room
A method and means are described for minimizing turbulence and
contamination caused by movement of a robotic device within a clean room.
A robotic-type article handling device (not shown) is supported on a vertical
mast 10 (Fig. 1) that protrudes upwardly through a slot 11 that extends
lengthwise of a perforated, raised clean room floor 12. Movement of the device
is controlled from below the floor 12.
Above and extending lengthwise of slot 11 are a series of substantially
uniformly spaced flexible rods 13 (see Fig. 2). The number of rods 13 depends
upon the width of slot 11, the amount of open area desired or required, and the
diameter of rod selected. The elasticity of rods 13 allows them to open and close
as the vertical mast 10 of the device moves back and forth within the slot. Spring-
loaded supports 14 which rotate and are appropriately spaced are used to
minimize rod sag. Rollers 15 (Fig. 3) are preferably used to minimize the
separation length of rods 13 in order to maintain the majority of the floor slot 11
With this arrangement, turbulence in the air flow caused by the wake of the
robotic device as it travels back and forth within the clean room is minimized.
Such turbulence, if permitted to occur, could generate eddy currents that would
lift the particles that normally accumulate below the working surface and deposit
them on the working surface and thereby contaminate the product being worked