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:
May. 19, 1998
Filed:
Oct. 15, 1996
James J Benke, Pittsburgh, PA (US);
Daniel Evan Palmieri, Aliquippa, PA (US);
Daniel Dickson Gress, Jr, Monroeville, PA (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
Heat sinks are placed on the contact stems of a vacuum interrupter between the vacuum bottle and junctions with the terminal conductors to lower the temperature of these junctions. The heat sinks are formed by a stack of thin laminations having central openings with inwardly directed tabs which bite into and secure the laminations to the stems. The laminations have aligned slots forming axial passages for cooling air. Preferably, the slots are enclosed to eliminate sharp peripheral edges to reduce the potential for flash over. In one embodiment, the slots are not formed by removing material but by bending it out of the plane of the lamination to maximize heat radiating surface area and to generate turbulent cooling air flow for increased cooling efficiency. An axially extending peripheral lip can provide axial spacing between laminations.