Turning – Miscellaneous
Patent
1989-04-13
1990-06-19
Terrell, William
Turning
Miscellaneous
82 111, 82 93, 493287, 493363, 493370, B23B 100
Patent
active
049342274
ABSTRACT:
A device for cutting a support helix for a radially expanded sleeve of resilient material which may be used as an enclosure of an elongate object such as an electrical cable. The device includes a knife wheel having a plurality of circumferentially distributed, radially projecting knives for making elongate spaced cuts through the wall of a plastic tube. The plastic tube and the knife wheel are rotated and moved axially relative to each other to cause the knife wheel to make a helical pattern of elongate spaced cuts through the wall of the plastic tube along the entire length of the plastic tube. One end portion of the helix is separated from the helix into a strip extending from one end of the helix through the support helix and out of the other end thereof where it may be manually grasped. The connection areas between the spaced cuts are dimensioned so that the support helix can be manually unwound by pulling on the end portion extending through the support helix.
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Kirn Walter N.
Minnesota Mining and Manufacturing Company
Qualey Terryl K.
Sell Donald M.
Terrell William
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