Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1980-09-22
1982-02-16
McCarthy, Edward J.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 684, B65H 1702
Patent
active
043156088
ABSTRACT:
A mandrel which, when inserted into the inner cylindrical surface of a tape roll core, permits the core to be rotatably mounted in a dispenser. The mandrel has two generally triangular opposed end plates connected at corresponding corners by three arcuate plates. Each end plate has a cylindrical stub shaft extending outward perpendicularly to define the axis of the mandrel. The arcuate plates are spaced to define segments of a cylinder coaxial with the axis of the mandrel. Each arcuate plate has a rib extending axially along its convex surface; when the mandrel is inserted into a tape roll core, these ribs engage the inner cylindrical surface of the core. A mandrel of this structure is particularly suited for manufacture by an injection molding process.
REFERENCES:
patent: 1055576 (1913-03-01), Tyler
patent: 2414893 (1947-01-01), Peterson
patent: 3297155 (1967-01-01), Gattenby
patent: 4191342 (1980-03-01), Reinhold
Alexander Cruzan
Barnes John C.
McCarthy Edward J.
Minnesota & Mining Manufacturing Company
Sell Donald M.
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