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Class Information
Number: 226/78
Name: Advancing material of indeterminate length > Means to engage longitudinally spaced modifications in material > Rotating sprocket (e.g., pin-wheel) > Circumferentially opposite pins engage looped material
Description: Device in which a first portion of material is engaged by one or more first prongs of a sprocket, a second portion of said material is free of [i.e., out of engagement with, and (as disclosed) usually in a loop about, a sound or projection head] said sprocket, and a third portion of said material is engaged by one or more second prongs of the same sprocket, said second prong(s) being peripherally separated (usually, as disclosed, by substantially 180° of arc) from said first prong(s) by prongs which are not in engagement with said second portion of material.

Patents under this class:

Patent Number Title Of Patent Date Issued
4619388 Automatic paper sheet supplying apparatus Oct. 28, 1986
4281804 Tensioning device for materials of tape form Aug. 4, 1981
4227821 Web drive mechanism for line/series printers Oct. 14, 1980
4213551 Recording carrier transport assembly for use with side margin punched recording carrier webs Jul. 22, 1980
4089490 Film transport mechanism May. 16, 1978
4010882 Sprocket drive and stripper arrangement for computer form feeder apparatus Mar. 8, 1977
4000803 Vacuum-buffered bidirectional paper drive system Jan. 4, 1977

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