US PATENT SUBCLASS 141 / 48
.~.~ Gas cycle for pre-treatment of receiver or contents material

Current as of: June, 1999
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141 /   HD   FLUENT MATERIAL HANDLING, WITH RECEIVER OR RECEIVER COACTING MEANS

37  DF  DIVERSE FLUID CONTAINING PRESSURE FILLING SYSTEMS INVOLVING RECEIVER GAS CONTENT MODIFICATION {11}
47  DF  .~ Gas control or supply varied, shifted or supplemented during cycle {3}
48.~.~ Gas cycle for pre-treatment of receiver or contents material

DEFINITION

Classification: 141/48

(under subclass 47) Apparatus in which the gas cycle which is characteristic of this group is used to pretreat either the receiver or the contents material.

(1) Note. This cycle is distinguished from mere counter pressure or vacuum application to establish a condition in the receiver by the fact that some step intervenes which either changes the gas condition or replaces one gas with another prior to the filling operation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

63+, for gas pretreatment of receiver or contents material without special control of gas etc. as required by subclass 47.

92, for fluid pretreatment of a receiver where pressure conditions are not maintained between the pretreatment and the filling operation.