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:
Jul. 13, 1982
Filed:
Oct. 20, 1980
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Abstract
Discharge apparatus comprises a vacuum envelope which is evacuated by a pamping apparatus. In the envelope, an anode and a hollow cathode are disposed and are connected to an arc power supply. A disk having an orfice covers one end of the hollow cathode. A low pressure gas is supplied from a gas source to the envelope through the hollow cathode and the orifice, the gas pressure in the hollow cathode being maintained higher than that in the envelope. The hollow cathode and the disk are made of an electrically conductive material and are connected to an ignition power supply. Before effecting discharging between the anode and the hollow cathode, the ignition power supply causes an ignition between the disk and the inner surface of the hollow cathode.