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:
Oct. 31, 2000
Filed:
Dec. 21, 1998
Applicant:
Inventor:
Wilfried Haas, Erlangen, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
218123 ; 218128 ;
Abstract
A contact configuration for vacuum switches includes two mutually opposite switch parts having a predetermined radius R.sub.K. Each switch part has slots which proceed from a center and which extend outward to form a spiral contact. The contours of the slots have a variable radius with a foot which coincides with the center of the switch part. Preferably, the slots end at a recess which has a predetermined radius R.sub.I and lies at the center of the switch part or they slightly overlap the recess, where R.sub.I .apprxeq.0.25-0.33 .multidot.R.sub.K. Specific mathematical functions can be specified for the slot contours.