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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.:

US 4666294 B1

PDFFull Text
Date of Patent:
May. 19, 1987

Filed:

Dec. 27, 1985

Apparatus for exposure of both sides of printed circuit plates

Applicant:
Inventors:

Horst Gelbert, Eschborn, DE;

Walter Grimm, Morfelden, DE;

Michael Kiessling, Langenselbold, DE;

Winifred Newiger, Cleeberg, DE;

Wolfgang Walch, Liederbach, DE;

Hans Werner, Eppstein, DE;

Assignee:

Klimsch & Co KG, Frankfurt am Main, DE;

Attorney:

Kelman; Kurt

Primary Examiner:

Monroe H Hayes

Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
355 89 ; 355 78 ;
Abstract

The equipment is intended for exposing both side of printed circuit plates by means of a contact print. The equipment comprises a master copy and printed circuit plates holder in a rack provided with feeding elements and guided in parallel between two light sources and comprising respectively one portion above and below the exposure plane. The holder is formed of a dual frame (1) the two frame portions 2,2' of which are formed to be moved part and together relative to one another and in parallel to one another and while remaining in a position parallel with respect to one another. Located in the frame portions (2,2') of the dual frame (1) is respectively one transparency (4) framed by a frame (5) provided at least on one side thereof with alignment elements (15), with suction ports (7) being provided in its counterdirected surfaces (6) along the circumferential edges thereof. The said frames (5) are formed to precisely conform in size with respect to one another to be suitably placed into the frame portions (2,2').

Find Patent Forward Citations

Gelbert, Horst. (1987). Apparatus for exposure of both sides of printed circuit plates (U.S. Patent No. 4666294). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4666294

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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