The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 1996
Filed:
Aug. 19, 1994
Gerhard W Dorfel, Boll, DE;
Jurgen Treutner, Ostfildern, DE;
Beloit Technologies, Inc., Wilmington, DE (US);
Abstract
A clamping head for engaging the interior cavity of a hollow tube, or core, used to wind a traveling web, such as paper produced by a papermaking machine, comprises a head shank in the shape of a truncated hexahedral pyramid having a clamping surface on each side of the hexahedron. A corresponding number of clamping pieces have contact surfaces which engage the clamping surfaces. The clamping and contact surfaces are contoured with concave, convex and straight pitches in the circumferential direction relative to the shank such that their contact is substantially linear. Expansion of the clamping pieces to engage the core is provided by a combination of pivotal and sliding movement of the contact surfaces on the clamping surfaces.