US PATENT SUBCLASS 226 / 57
.~.~ With positive actuator to project and to retract prong

Current as of: June, 1999
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226 /   HD   ADVANCING MATERIAL OF INDETERMINATE LENGTH

52  DF  MEANS TO ENGAGE LONGITUDINALLY SPACED MODIFICATIONS IN MATERIAL {8}
55  DF  .~ Prong operable intermittently to prevent longitudinal material movement (e.g., registration pins) {3}
57.~.~ With positive actuator to project and to retract prong

DEFINITION

Classification: 226/57

(under subclass 55) Device provided with means to drive the prong both into and out of engagement with the material modifications.

(1) Note. To be included herein a patent must claim a device provided with more than a biasing means (e.g., a spring) to move the prong into and out of engagement with the material.