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:
Aug. 01, 1989
Filed:
Jul. 01, 1988
Applicant:
Inventor:
Rudolf Scheider, Reinach, CH;
Assignee:
Erowa AG, Reinach, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23H / ; B23H / ;
U.S. Cl.
CPC ...
219 6915 ; 2042 / ; 219 6901 ;
Abstract
A spark erosion machining apparatus with an electrode changing mechanism having electrode support members and a frame that are connected to the interior front wall of the tub that can be opened like a door Two pairs of levers are pivotally mounted on the frame. The free ends of the levers have a transverse beam with perpendicularly protruding electrode support members. The transverse beams with the electrode support members can be pivoted (using hydraulic or pneumatic cylinder pistons) from a rest position where they are near to the front wall of the tub into an operating position where the electric support members are in an essentially central portion of the tub.