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. 14, 1981
Filed:
Oct. 29, 1979
Narain G Hingorani, Los Altos Hills, CA (US);
Electric Power Research Institute, Palo Alto, CA (US);
Abstract
A sealed environment such as in a gas insulated electrical substation is cleaned by introducing a cleansing fluid in vapor form into the environment and condensing the vapor on surfaces within the environment. The condensed fluid is then removed and filtered to extract contaminants such as particulate matter. The cleansing fluid can be continuously introduced or periodically introduced during the cleaning process. By selecting a cleansing fluid with electrical insulating properties and a vaporization temperature lower than the condensation temperature of the gas insulation, electrical apparatus can be cleaned during normal operation of the apparatus.