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:
Jan. 06, 1981
Filed:
Sep. 11, 1978
Gerhard Peche, Berlin, DE;
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
An improved vacuum switch has slotted, flexible, discus-shaped contact discs attached to the current carrying contact bolts. In the open circuit case, a gap exists between each contact bolt and its corresponding contact disc and between the two discs. In the closed circuit case, the contact bolts drive the contact discs against one another, slightly deforming the contact discs, resulting in a low resistance current path. As the switch starts to open, the contact bolts first separate from the adjacent disc surfaces. As the switch opens further, any arc that ignites exists only between the contact discs. Tangential slots in the contact discs guide the arc toward the center of the contact discs. The flexible discs assume their previous undistorted shape when the switch has opened.