US PATENT SUBCLASS 84 / 136
.~.~.~.~ Registration

Current as of: June, 1999
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84 /   HD   MUSIC

1  DF  INSTRUMENTS {9}
*  DD  .~ Automatic {13}
115  DF  .~.~ Selectors {8}
122  DF  .~.~.~ Winding and rewinding {16}
136.~.~.~.~ Registration {1}
137  DF  .~.~.~.~.~> Movable detector at edge {1}

DEFINITION

Classification: 84/136

Means to insure proper registration of the sheet perforations with the tracker-holes, usually automatic. The tracker may be shifted, or one or both rolls. Centering or guiding means.

SEE OR SEARCH CLASS

226, Advancing Material of Indeterminate Length,

10, for means to sense and position material of indeterminate length.

242, Winding, Tensioning, or Guiding, particularly

548+, and 615+ for guides of web material in general.