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US4575329: Electrode element for corona treater


Filing Information

Inventor(s) Andreas Ahlbrandt ·
Attorney/Agent(s) Barry E. Sammons ·
Primary Examiner Willard E. Hoag ·
Application Number US6724823
Filing date 04/18/1985
Issue date 03/11/1986
Predicted expiration date 01/09/2004
U.S. Classifications 425/174  · 118/620  ·
International Classifications B29B 1308  ·
Kind CodeA
International Classifications 425174;174.4;182;185 ·
Related U.S. Application DataThis is a division of application Ser. No. 569,264, filed Jan. 9, 1984, now U.S. Pat. No. 4,533,523.
5 Claims, No Drawings


A corona treater includes an active electrode which has one or more insulated electrode elements slidably supported by an insulating track. A contact spring connects each electrode element to a conductive electrode bar embedded in the track, and sheet material to be treated is fed through a treatment zone created between an active discharge surface on each electrode element and a bare metal roller electrode.

Independent Claims | See all claims (5)

  1. 1. An electrode element for a corona treater, which comprises;a case made from a heat resistant electrically insulating material and having a bottom wall which provides a discharge surface and a pair of spaced side walls which connect to the bottom wall and extend upward therefrom;a metal plate disposed between the side walls and against the bottom wall of the case on the side opposite the discharge surface;means for connecting the case to the corona treater; anda contact spring which is disposed between the side walls of the case and having one end in electrical contact with the metal plate and its other end extending upward to make electrical contact with an electrode bar on the corona treater.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US3778622 IWATSU ELECTRIC CO LTD Kobayashi et al. Dec 1973
US3794839 XEROX CORP Hayne Feb 1974
US3842273 XEROX CORP Van Buskirk Oct 1974
US3908127 XEROX CORP Clark Sep 1975
US3978379 Xerox Corporation Delvecchio Aug 1976
US3983393 Xerox Corporation Thettu et al. Sep 1976
US4227233 Olympus Optical Company Limited Nishikawa et al. Oct 1980
US4322156 Tokyo Shibaura Denki Kabushiki Kaisha Kohyama Mar 1982
US4469428 Mita Industrial Co., Ltd. Yoshioka et al. Sep 1984

Patent Family

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