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US 4,055,100 AGranted
Severing knife for tube cutoff apparatus
AssigneeAlpha Industries, Inc.
InventorAlexander Borzym
Life of this patent
Estimating the term…
Abstract
A tube cutoff apparatus of the shear knife type is provided with an improved knife holder to reduce the likelihood of fracture. The knife holder and the tube clamping jaws are formed to provide a nesting relationship at the full cut position which increases the blade penetration depth without sacrificing blade support.
Claims2
In a tube cutoff apparatus of the type using a ram-driven shearing blade to sever a clamped workpiece:
- holder means for said blade and comprising a clamping structure, said clamping structure mechanically interconnecting said holder means and blade and defining a pocket having support surfaces for the faces and sides of the blade, said support structure having vertically extending portions enveloping the edges of said blade when in the pocket and bounding a central upwardly recessed portion over which the faces of the blade are exposed;
- workpiece clamping means adapted to receive and hold the workpiece to be severed, and having a central slot for permitting the blade to pass therethrough and through the workpiece;
- the clamping means having a top surface which is matingly conjugate with the holder means
- whereby the blade holder abuts the workpiece clamping means in substantially nesting relationship when the ram is fully driven toward the workpiece.
1 more element
Dependencies are inferred from the claim text.