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US 5,683,045 AGranted
Paper-tearing rollers assembly
AssigneeShap, Inc.
InventorTadeusz Staniszewski
Life of this patent
Estimating the term…
Abstract
Paired, coacting, albeit non-contacting rollers have interfitting collars or rings, and tapered rims, which are rotatably driven in opposite directions. Paper fed therebetween is torn asunder, and freely discharged therefrom. The rings cooperate together to force the paper to be torn lengthwise thereof, and the rims crease the resulting strips to insure that they do not remain lodged between the rings. An embodiment has helical rings or collars which cause the paper to be dismembered into diagonally-shaped, fine fragments.
Claims6
A paper-tearing rollers assembly, comprising:
- a pair of elongate rollers, rotatable in opposite directions on parallel, central axes;
- and
- raised collars formed on each of said rollers;
- wherein
- said collars of each of said rollers comprise a plurality of spaced-apart, fully circular rings;
- each of said rings has a given, overall width;
- each said ring is spaced, across a gap, from another most adjacent ring, a distance which is greater than said overall width;
- said rings of one of said rollers are non-contactingly intermeshed with said rings of the other of said rollers;
- a plurality of spaced-apart rims formed on each of said rollers;
- annular grooves formed in each of said rings;
- each said rim intrudes into one of said grooves;
- and
- said rims have blunt, outermost peripheries.
10 more elements
A paper-tearing rollers assembly, comprising:
- a pair of elongate rollers, rotatable in opposite directions on parallel, central axes;
- wherein
- said rollers have means mutually cooperative for tearing sheet paper into strips, said tearing means comprises raised collars formed on each of said rollers;
- and
- means carried by said rollers for forming said paper strips into V-shaped, channel configurations, said strip forming means comprising a groove formed in each said collar and a rim formed on each of said rollers, said rims having a tapered configuration having a blunt, outermost periphery such that each rim intrudes into a groove.
2 more elements
Dependencies are inferred from the claim text.