US PATENT SUBCLASS 227 / 59
.~.~.~ Heading means also acting as opening former

Current as of: June, 1999
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227 /   HD   ELONGATED-MEMBER-DRIVING APPARATUS

51  DF  WITH MEANS TO HEAD MEMBER {5}
55  DF  .~ Heading tool extends within hollow portion of member {4}
58  DF  .~.~ With means to form opening in work for member {1}
59.~.~.~ Heading means also acting as opening former

DEFINITION

Classification: 227/59

(under subclass 58) Device wherein the means for heading the

member additionally functions to make an aperture in the workpiece.