Seam closing apparatus
AssigneeMet-Coil Systems Corporation
InventorsJohn J. Toben, Michael C. Borwig
Life of this patent
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Abstract
A seam closing apparatus for use in sealing a duct seam having an outwardly extending sealing portion and a lower fold includes a handle portion having a power actuation trigger and a first roller for engaging the outwardly extending sealing portion of the duct seam. A second roller is also provided for engaging the lower fold of the duct seam. Operation of the power actuation trigger causes the first roller to rotate in a first direction, thereby flattening the outwardly extending sealing portion of the duct seam.
Claims19
A seam closing apparatus for use in sealing a duct seam having an outwardly extending sealing portion and a lower fold, said seam closing apparatus comprising:
- a handle portion having a power actuation trigger;
- a first roller comprising a first exterior side and a first annular surface connected thereto;
- a second roller located proximate and axially parallel to the first roller and comprising a second exterior side, a second annular surface connected to the second exterior side, and an annular groove formed in the second annular surface proximate the second exterior side for engaging said lower fold of said duct seam;
- wherein the first annular surface of the first roller extends substantially past the second exterior side of the second roller for engaging said outwardly extending sealing portion of said duct seam;
- and
- wherein operation of said power actuation trigger causes said first roller to rotate in a first direction, thereby flattening said outwardly extending sealing portion of said duct seam.
A hand-held seam closing apparatus for use in sealing a duct seam having an outwardly extending sealing portion and a lower fold, said seam closing apparatus comprising:
- a handle portion having a power actuation trigger for selectively enabling operation of said hand-held seam closing apparatus;
- a pair of opposing, axially parallel rollers rotatably mounted upon a distal end of said hand-held seam closing apparatus, said pair of opposing rollers being operatively mounted in a step-wise manner such that said pair of opposing rollers are offset from one another with an annular outer surface portion of a first of said rollers extending substantially past an end of a second of said rollers;
- wherein the second roller includes an annular groove positioned proximate the end of the second roller for engaging said lower fold of said duct seam;
- and
- wherein operation of said power actuation trigger causes said one of said pair of opposing rollers to rotate in a first direction.
A method for sealing a duct seam having an outwardly extending sealing portion and a lower fold, said method comprising the steps of:
- engaging the lower fold with an annular groove located proximate an end of a first roller;
- engaging the sealing portion with an annular outer surface of a second roller located proximate and axially parallel to the first roller;
- and
- rotating at least one of the rollers, wherein the outer annular surface of the second roller extends substantially past the end of the first roller for folding the sealing portion over towards the lower fold.
Dependencies are inferred from the claim text.