U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Device for the surface treatment of thermoplastic moldings by corona discharge

Patent 4467200 Issued on August 21, 1984. Estimated Expiration Date: Icon_subject November 12, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3146385

3183352

3254215

3655966

3743830

3800153

Constant current charging device Patent #: 3935517
Issued on: 01/27/1976
Inventor: O'Brien

Inventors

Assignee

Application

No. 06/320708 filed on 11/12/1981

US Classes:

250/324, CORONA IRRADIATION219/69.15Electrodes

Examiners

Primary: Smith, Alfred E.
Assistant: Berman, Jack I.

Attorney, Agent or Firm

International Classes

B29C 59/10 (20060101)
B29C 59/00 (20060101)
H01T 19/00 (20060101)

Foreign Application Priority Data

1980-12-01 DE

Abstract

An electric discharge corona discharge device is disclosed which is useful for rendering of the surface of plastic molded parts capable of being adhesively bound to another part. The device includes flexible, limp counter electrodes which can be adjusted so as to maintain a substantially uniform discharge over the plastic part surface. The discharge is obtained with alternating current and the base underneath the plastic part constitutes the base electrode.

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