Patent ID: 7410176
Filing Date: 2008-08-12
Classification: B65H,Y10T

Abstract:
1. A chuck for internally engaging the hollow core element of a roll of web material comprising: a chuck body having a cylinder portion with diameter slightly less than the inside diameter of a hollow core element with which said cylinder portion is to be used and a base portion with a diameter at least as great as that of said cylinder portion; said base portion having an opening for accepting said chuck coaxially on a spindle; said chuck body having at least one partially tapped bore hole through said chuck body with a bore hole central axis line which, projected on a plane perpendicular to the cylinder portion axis, makes an acute angle (B) with a plane tangent to the cylinder at the outer entrance point of said bore, said central axis line further making an acute angle (A) with the plane perpendicular to said cylinder portion axis, the angle (A) being between 20 degrees and 60 degrees and the angle (B) being between 30 degrees and 70 degrees; and at least one threaded element configured to engage rotatably in said tapped bore hole having on a proximal end thereof a tool engageable configuration and on a distal end thereof at least two peripherally located tooth-like extensions for gouging engagement with the interior of a hollow core element; whereby gouging engagement with a core element is produced by rotational advancement of such a said threaded element to extend outside the periphery of said body cylinder portion.