.~ Driver or heading means located within tubular work
DEFINITION
Classification: 227/52
(under subclass 51) Device wherein the member is disclosed as being driven through the wall of a hollow elongated workpiece, with either the driver or the "heading" means functioning within the confines of the hollow portion of the workpiece.
(1) Note. The tubular workpiece operated upon by the devices of this subclass may have other than a cylindrical cross-section and also may be closed on one end, but this end portion is not considered as the "wall" of the subclass definition.
