US PATENT SUBCLASS 494 / 38
INCLUDING SEALING MEANS

Current as of: June, 1999
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494 /   HD   IMPERFORATE BOWL: CENTRIFUGAL SEPARATORS

38INCLUDING SEALING MEANS {3}
39  DF  .~> For protecting evacuated, bowl-enclosing housing against gaseous infiltration
40  DF  .~> Comprising seal, or element cooperating therewith, movable axially for controlling outlet on periphery of bowl
41  DF  .~> For sealing between stationary and moving elements

DEFINITION

Classification: 494/38

INCLUDING SEALING MEANS:

(under the class definition) Apparatus which includes means for preventing the unintended movement of a gas, liquid or solid to or from, or from one region to another of, the separator.

(1) Note. The tendency of a substance to move stems frequently from the existence of a pressure differential between the regions; however, other phenomena (e.g., gravity) may be responsible, instead.

(2) Note. Included in this subclass 38 is a seal of other than a structural barrier type; e.g., a liquid seal.

SEE OR SEARCH CLASS

55, Gas Separation,

355, for apparatus of that class provided with a liquid trap seal or valve.

277, Seal for a Joint or Juncture, for a generic sealing means or process,

345+, for a seal between relatively movable parts (i.e., a dynamic seal).