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:
Oct. 09, 2001
Filed:
Dec. 07, 1999
Applicant:
Inventors:
William R. Miller, Portland, OR (US);
Semion Stolyar, Beaverton, OR (US);
Assignee:
Tidland Corporation, Camas, WA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B65H 7/524 ;
U.S. Cl.
CPC ...
B65H 7/524 ;
Abstract
A web material roll rotatable retention assembly, comprising a shaft adapted to be inserted into a web material roll core and having a hydrogel filled chamber is disclosed. A hydrogel pressure applying assembly controllably applies pressure to the hydrogel and an outward pressure applying assembly pushes pressure applying members outwardly in response to the pressure of the hydrogel.