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:
Nov. 07, 2000
Filed:
Feb. 12, 1999
Applicant:
Inventor:
Donna S Cowell Senft, Albuquerque, NM (US);
Assignee:
Permacharge Corporation, Rio Rancho, NM (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
42218604 ; 361221 ; 361225 ;
Abstract
An apparatus for charging a web. The apparatus includes a charging electrode disposed on one side of the web and an insulating roller for supporting the web. The insulating roller is disposed on the other side of the web and is in contact with the web. A discharging electrode is provided in contact with the insulating roller for removing charge from a surface of the insulating roller as the roller rotates. In the preferred embodiment of the present invention, the charging electrode is held at a first constant potential, and the discharge electrode is held at a second constant potential.