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:
Aug. 14, 1984
Filed:
Dec. 28, 1981
Gerald W Karr, South Beloit, IL (US);
Beloit Corporation, Beloit, WI (US);
Abstract
For use in a papermaking machine or paper converting mechanism having an arrangement for winding a roll of paper onto a core at high speed, an expanding core chuck for insertion into a roll core which includes a spindle mounted for rotation within a housing, a cone mounted on the spindle and having camming surfaces thereon, a piston reciprocable axially of the spindle, means for introducing hydrostatic pressure to one end of the piston, a cup secured to the opposite end of the piston and having a plurality of radially deflectable leaves in spaced relation therearound. The leaves have angular surfaces thereon engageable by the camming surfaces on the core. When the angular surfaces are contacted by the camming surfaces of the core due to movement of the piston, the leaves are deflected outwardly into tight fitting relationship within the interior of the roll core.