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US 4,624,168 AGranted
Apparatus for cutting heavy wall tube
AssigneeAlpha Industries, Inc.
InventorJohn J. Borzym
Life of this patent
Estimating the term…
Abstract
Apparatus for cutting heavy wall tubing including vertical and horizontal mechanically driven rams operated in sequence to drive blades fully through a tubing section. Notching blades cut shallow notches in the section in advance of the main blade entries thereby to prevent dimpling.
Claims6
Apparatus for cutting tubing comprising:
- a first ram having a continuously driven first stroke path of such length to extend fully through a tubing section,
- a section ram having a continuously driven second path of such length to extend fully through a tubing section which is aligned with and angularly spaced from the first stroke path by about 90',
- a first blade operated by the first ram and of sufficient length as to penetrate entirely through both opposite walls of the tubing along the first path but of a width which is less than the maximum inside dimension of the tubing measured across the path,
- a second blade operated by the second ram to cut through the wall portions of the tubing which are uncut as a result of the first ram operation, and
- control means for operating said first ram through a cut and return stroke before operating said second ram.
2 more elements
Apparatus for severing tubing comprising:
- (a) a first ram defining a first stroke;
- (b) a second ram defining a second stroke path intersecting but angularly spaced from the first stroke path;
- (c) first notching blade means for cutting a first notch through a tube section which lies in the path of the first stroke;
- (d) first cutting blade means of a width less than the inside diameter of the tubing and which is mounted to be driven through the tubing by the first ram;
- (e) second notching blade means mounted adjacent the first cutting blade to be driven by the first ram through the tubing and to notch a second section which lies outside of the first stroke path but within the second stroke path;
- (f) second cutting blade means mounted to be driven through the tubing along the second path;
- and
- (g) means for sequentially controlling the operations of the first and second rams.
5 more elements
Dependencies are inferred from the claim text.