US 7,588,210 B2
	Spool for receiving a wound skein material
Manfred Häfner, Leopoldshöhe (Germany)
Assigned to Häfner & Krullmann GmbH, Leopolodshöhe (Germany)
Appl. No. 11/908,126 PCT Filed Mar. 08, 2006, PCT No. PCT/EP2006/002135 § 371(c)(1), (2), (4) Date Sep. 08, 2007, PCT Pub. No. WO2006/094787, PCT Pub. Date Sep. 14, 2006.
Claims priority of application No. 10 2005 010 710 (DE), filed on Mar. 09, 2005.
Prior Publication US 2008/0230648 A1, Sep. 25, 2008
This patent is subject to a terminal disclaimer.
Int. Cl. B65H 75/14 (2006.01)

U.S. Cl. 242—609  [242/609.1; 242/609.3; 242/118.4]

11 Claims

1. A spool for receiving a wound skein product comprising a rotationally symmetrical spool body with two axial ends provided with flange discs, said spool being divided into two spool parts by a substantially radial dividing surface, these parts having front surfaces running adjacent and parallel to the dividing surface, said front surfaces having locking projections on at least one said front surface and, on another said front surface at least detent recesses which interact with the locking projections of the other spool part, respectively, interlocking therewith in the form of a bayonet catch by mutual rotation of the spool parts, and the front surfaces are constructed such that a dividing line appearing around a spool circumference is wave-shaped having wave peaks and troughs, and wherein the detent recesses and the locking projections are positioned with respect to the wave peaks and wave troughs such that, when rotating the spool parts for closing the bayonet connection, the wave peaks of one of the spool parts are rotated from a position opposite to the wave peaks of the other spool part into a position opposite the wave troughs of the other spool part.