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:
Sep. 06, 1994
Filed:
Jun. 29, 1993
Applicant:
Inventor:
Mario Baffo, Woburn, MA (US);
Assignee:
ECRM Trust, Tewksbury, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H / ; B30B / ;
U.S. Cl.
CPC ...
226181 ; 100176 ; 226186 ;
Abstract
A method and apparatus for precisely advancing film material between two rollers includes a driven roller having a medium hardness rubber surface and a non-driven hard surfaced roller which contacts precision surfaces at either end of the driven roller to accurately control the spacing between the two rollers. The non-driven roller is urged against the driven roller precision surfaces by a spring force, and causes the rubber of the driven roller to compress when film material is in an operative position between the roller pair.