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:
Sep. 30, 1986
Filed:
Nov. 30, 1984
Wilfried Kuhl, Grosschwarzenlohe, DE;
Edwin Gemmel, Erlangen, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A vacuum switch for the low-voltage range, in particular, a low voltage contactor, comprising a vacuum switching tube having a switching chamber and a first contact rigidly arranged therein and a lead-in pin movable relative thereto having a second contact, wherein the vacuum switching tube has an insulating member which is surrounded on the vacuum side at least partially by shielding. The shielding is arranged as a concentric hollow cylinder and the insulating member comprises a ring shaped member, preferably of ceramic. The axial length of the shielding cylinder is at least 1.5 times that of the ring. A vacuum switch having a short insulating path thus can be constructed cost-effectively and which has the capability for a high number of switching cycles.