US PATENT SUBCLASS 53 / 505
.~.~ Responsive to presence or absence of cover material (e.g., wrapper, receptacle, lid)

Current as of: June, 1999
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53 /   HD   PACKAGE MAKING

52  DF  WITH MEANS RESPONSIVE TO A SENSED CONDITION {6}
493  DF  .~ Of individual contents or group feed or delivery {7}
505.~.~ Responsive to presence or absence of cover material (e.g., wrapper, receptacle, lid) {1}
506  DF  .~.~.~> Responsive to absence of cover material (no can - no fill)

DEFINITION

Classification: 53/505

Responsive to presence or absence of cover material (e.g., wrapper, receptacle, lid):

(under subclass 493) Apparatus wherein the sensing means senses (a) a normal or desired condition of the cover or (b) an abnormal or undesired condition of the cover and as a result feeds, interrupts, or otherwise controls the supply of the contents.

SEE OR SEARCH THIS CLASS, SUBCLASS:

53, for apparatus which senses packages deficient in some respect and ejects or deflects the deficient package from the packaging line.

SEE OR SEARCH CLASS

141, Fluent Material Handling, With Receiver Coacting Means,

140+, and 156+ for apparatus where the material supply is controlled by sensing the presence of the receiver.