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:
Apr. 15, 2014
Filed:
Apr. 12, 2012
Patrik Kaufmann, Baden, CH;
Tilo Buehler, Wettingen, CH;
Harshavardhan M. Karankikar, Longwood, FL (US);
Rahul Pawar, Lake Mary, FL (US);
Jerry Earl, DeLand, FL (US);
Gabriel Schuler, Knonau, CH;
Patrik Kaufmann, Baden, CH;
Tilo Buehler, Wettingen, CH;
Harshavardhan M. Karankikar, Longwood, FL (US);
Rahul Pawar, Lake Mary, FL (US);
Jerry Earl, DeLand, FL (US);
Gabriel Schuler, Knonau, CH;
ABB Research Ltd., Zurich, CH;
Abstract
A cooling apparatus for cooling a switchgear is provided. The switchgear has one or more primary contacts supported by a bushing and constructed and arranged to connect to a terminal of a circuit breaker. The cooling apparatus includes at least one evaporator associated with each primary contact, a condenser apparatus located at a higher elevation than the at least one evaporator, fluid conduit structure connecting the at least one evaporator with the condenser apparatus, and electrically insulating working fluid in at least one evaporator so as to be heated to a vapor state, with the fluid conduit structure being constructed and arranged to transfer the vapor to the condenser apparatus and to passively return condensed working fluid back to the at least one evaporator.