Back to results
US 4,794,832 AGranted
Method and apparatus for cutting and unbonding elastic bands
AssigneeRubber Band Technology, Ltd.
InventorDon K. Trimble
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeRubber Band Technology, Ltd.
InventorDon K. Trimble
Estimating the term…
An apparatus and method for cutting tubular band stock to produce an elastic band and unbonding the abutting edges of the band is disclosed. The apparatus includes a guillotine-type movable blade which cuts transversely across the tubular stock and band engaging surface proximate the blade which is formed to engage the cut band and shift opposite sides of the stock in a direction along the cut to break any bonds formed during the cutting process. The shifting apparatus is provided by a pair of fingers which engage one side of the band and cooperate with an arcuate surface engaging the opposite side of the band to shift two portions of the band next to the ends thereof toward the middle of the band and thereby effect breaking of the bonds. A reversible blade and reversible shear plate, as well as a lubricating structure and assembly for adjusting the band with which is cut also are disclosed.
A method of cutting an elastic band from tubular elastic band stock and unbonding the bonded-together opposite abutting side edges of the cut band including the steps of, cutting an individual band from said stock while opposite sides of said stock are held together by a cut across said stock with movable blade means, engaging opposite sides of said band after said cutting step with band engaging means, and shifting said band engaging means to produce displacement of at least one of said opposite sides relative to the other side in a direction along said cut over a distance sufficient to break any bonds between said opposite abutting side edges of said band, wherein the improvement in said method comprises:
In apparatus for cutting an elastic band from tubular band stock and unbonding bonded opposite abutting edges of the cut band including, cutting means mounted for movement transversely across said stock to cut a band therefrom while opposite sides of said band are in abutting relation, and band engaging means mounted proximate said cutting means and engaging said band as said band is cut from said stock, said band engaging means displacing at least one side of said cut band relative to the other side in a direction along the cut by a sufficient distance to break any bonding between said opposite abutting edges resulting from cutting of said band, the improvement in said apparatus comprising:
Dependencies are inferred from the claim text.