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:
Dec. 06, 2005
Filed:
Nov. 08, 2002
Tetsuya Sato, Niigata, JP;
Koichi Sato, Niigata, JP;
Tadao Nakagawa, Niigata, JP;
Kiyoshi Enomoto, Niigata, JP;
Toshio Hayakawa, Niigata, JP;
Yoshiyuki Shimazaki, Niigata, JP;
Tetsuya Sato, Niigata, JP;
Koichi Sato, Niigata, JP;
Tadao Nakagawa, Niigata, JP;
Kiyoshi Enomoto, Niigata, JP;
Toshio Hayakawa, Niigata, JP;
Yoshiyuki Shimazaki, Niigata, JP;
Nippon Seiki Co., Ltd., Niigata, JP;
Abstract
A liquid level detecting apparatus resistant to the deterioration and corrosion thereof is provided while holding down an increase in the manufacturing cost thereof. This apparatushas fixed electrodeson which a sliding contact pointis slidingly moved in accordance with a fluctuation of a float, and a first resistorconnected to the fixed electrodes, the fixed electrodesbeing made of at least silver (Ag), palladium (Pd) and a glass component, a weight ratio of the silver (Ag) to palladium (Pd) being not lower than 75 wt. % to not higher than 25 wt. %, a sliding portionof the fixed electrodeson which the sliding contact pointis slidingly moved being covered with second resistorsa resistance value of which is lower than that of the first resistor