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. 28, 2002
Filed:
Sep. 26, 2000
Hirotsugu Kinoshita, Kanagawa-ken, JP;
Kiyomi Sakamoto, Kanagawa-ken, JP;
Kimiya Sato, Saitama-ken, JP;
Makoto Kataoka, Tokyo, JP;
Atsushi Ohashi, Kanagawa-ken, JP;
Tomio Takahashi, Tokyo, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
There are provided an operating mechanism that drives the opening/closing of contacts, and a sliding conduction part that forms electrical connection of these contacts and the main circuit on receipt of a connection voltage; grease is applied to the mechanical sliding part of the operating mechanism and to the sliding conduction part. The grease has as base oil at least one synthetic oil and is selected from the group consisting of poly &agr;-olefins and dialkyl diphenyl ethers, and contains as thickener 5-30 mass % of a urea compound. The dynamic viscosity of the base oil is 30-500 mm /s at 40° C.