Disposable/reusable core adapters
A core adapter formed as a hollow cylindrical sleeve. A plurality of apertures extend through the sleeve, parallel to the sleeve's longitudinal axis. A plurality of radial apertures are formed in the sleeve for each longitudinal aperture. Each radial aperture is perpendicular to sleeve's axis and intersects a longitudinal aperture. Studs are provided in each radial aperture, initially recessed beneath the sleeve's outer surface. The sleeve's outside diameter is sized for insertion into a 6-inch inside diameter core. The sleeve's inside diameter is the same size as a 3-inch inside diameter core. The adapter is inserted into a 6-inch core until it is flush with the end of the core. Wedge-tipped bars are driven into each of the adapter's longitudinally aligned rows of studs, and against the bottom of each stud, thereby driving the studs perpendicularly away from the sleeve's axis into the core.
1. A core adapter, comprising:
(a) a hollow cylindrical sleeve;
(b) a plurality of longitudinal apertures formed through the sleeve, each longitudinal aperture extending substantially parallel to a longitudinal axis of the sleeve;
(c) a plurality of radial apertures formed in the sleeve for each one of the longitudinal apertures, each radial aperture extending substantially perpendicular to the longitudinal axis of the sleeve and intersecting one of the longitudinal apertures;
(d) a sharp stud in each one of the radial apertures, each stud having:
(i) a tip recessed beneath an outer cylindrical surface of the sleeve;
(ii) a longitudinal axis substantially perpendicular to the longitudinal axis of the sleeve;
(e) the sleeve having:
(i) an outside diameter sized for insertion into a roll core having a first diameter; and
(ii) an inside diameter substantially equal to an inside diameter of a roll core having a second diameter smaller than the first diameter, the inside diameter of the sleeve for receiving a core chuck.
2. A core adapter as defined in claim 1 , wherein the sleeve is flangeless and ribless.
3. A core adapter as defined in claim 2 , wherein the studs are friction-fit embedded in the sleeve.
4. A core adapter as defined in claim 3 , wherein the longitudinal apertures are spaced evenly and circumferentially around the sleeve.
5. A core adapter as defined in claim 4 , wherein the studs are spaced evenly in rows extending substantially parallel to the longitudinal axis of the sleeve.
6. A core adapter as defined in claim 5 , wherein within each row, each stud tip is coplanar with one stud tip in each one of the other rows.
7. A core adapter as defined in claim 6 , wherein the sleeve is formed of a resilient synthetic material.
8. A core adapter as defined in claim 6 , wherein:
(a) the first diameter is nominally 6 inches;
(b) the second diameter is nominally 3 inches;
(c) the sleeve has a length of about 5 inches measured between opposed ends of the sleeve;
(d) 6 longitudinal apertures are formed through the sleeve; and
(e) 5 radial apertures intersect each one of the longitudinal apertures.
9. A core adapter as defined in claim 8 , wherein any one of the studs embedded adjacent one of the opposed ends of the sleeve is embedded about one inch away from that one end of the sleeve.
10. A core adapter as defined in claim 3 , wherein each one of the studs has a tapered tip.
11. A core adapter as defined in claim 10 , each stud having a bottom extending into a hollow core of the sleeve.
12. A core adapter as defined in claim 11 , wherein each one of the studs has a central circumferential groove, a portion of the groove intersecting a corresponding one of the longitudinal apertures.
13. A core adapter as defined in claim 12 , wherein each one of the longitudinal apertures is offset relative to a plane which intersects the longitudinal axis of the stud in the radial aperture which intersects that one of the longitudinal apertures.
14. A core adapter as defined in claim 13 , wherein each one of the longitudinal apertures has a rectangular cross-section.
15. A core adapter as defined in claim 14 , wherein each one of the longitudinal apertures has a pair of side walls substantially parallel to the plane which intersects the longitudinal axis of the stud in the radial aperture which intersects that one of the longitudinal apertures.
16. A core adapter as defined in claim 15 , wherein the bottom of each one of the studs is rounded.